Vala was created by [[Damian Kindler]] and [[Robert C. Cooper]] as a one-time character, but because of the on-screen chemistry between Black's Vala and Shanks' character Daniel Jackson, and the character's popularity with the producers and the audience, Claudia Black became a recurring guest star in season 9 and joined the main cast in season 10. For her portrayal of Vala, Claudia Black was nominated for a 2006 [[Saturn Award]] in the category "Best Supporting Actress on Television",<ref name="Fetter"/> and won a Constellation Award in the category "Best Female Performance in a 2006 Science Fiction Television" in 2007.<ref>{{cite web |url=http://constellations.tcon.ca/2007.shtml |title=Looking Back At... The 2007 Constellation Awards |publisher=constellations.tcon.ca |accessdate=2008-03-04}}</ref>
Vala was created by [[Damian Kindler]] and [[Robert C. Cooper]] as a one-time character, but because of the on-screen chemistry between Black's Vala and Shanks' character Daniel Jackson, and the character's popularity with the producers and the audience, Claudia Black became a recurring guest star in season 9 and joined the main cast in season 10. For her portrayal of Vala, Claudia Black was nominated for a 2006 [[Saturn Award]] in the category "Best Supporting Actress on Television",<ref name="Fetter"/> and won a Constellation Award in the category "Best Female Performance in a 2006 Science Fiction Television" in 2007.<ref>{{cite web |url=http://constellations.tcon.ca/2007.shtml |title=Looking Back At... The 2007 Constellation Awards |publisher=constellations.tcon.ca |accessdate=2008-03-04}}</ref>
==Recurring Earthcharacters==
== Recurring Stargate Command personnel ==
{{main|List of recurring Earth characters in Stargate SG-1}}
{{anchor|Stargate Command}}
The [[Stargate Command]] (SGC) is a fictional military base at the (real) [[Cheyenne Mountain complex]] near [[Colorado Springs, Colorado]]. It is the main setting in ''Stargate SG-1'' and occasionally features on ''[[Stargate Atlantis]]''. The base extends many levels beneath the ground and is protected from most forms of attack including indirect nuclear detonations, also serving to contain biological, chemical or alien hazards to the outside world by means of a 'lockdown' status. Stargate Command is typically commanded by a General and is staffed by subject matter experts and military support personnel, several elite special operations teams, and several SG teams, including [[SG-1]]. The majority of the teams are [[United States Air Force]] with some [[United States Marine Corps]], civilians and [[United States Army]], but other nations have SG teams operating from the SGC as well after the events of season 5.
===SGCcharacters===
=== Janet Fraiser ===
[[File:JanetFraiser.jpg|250px|right|thumb|Doctor Janet Fraiser as portrayed by Teryl Rothery in ''Stargate SG-1'']]
The '''SGC ([[Stargate Command]])''' is a fictional military base at the (real) [[Cheyenne Mountain complex]] near [[Colorado Springs, Colorado]]. It is the main setting in ''Stargate SG-1'' and occasionally features on ''[[Stargate Atlantis]]''. The base extends many levels beneath the ground and is protected from most forms of attack including indirect nuclear detonations, also serving to contain biological, chemical or alien hazards to the outside world by means of a 'lockdown' status, as seen in the SG-1 episode (Foothold). Stargate Command is typically commanded by a general and is staffed by subject matter experts and military support personnel, several elite special operations teams, and several SG teams, including SG-1. The majority of the teams are [[United States Air Force|U.S. Air Force]] with some [[United States Marine Corps|U.S. Marine Corps]], civilians and [[United States Army|U.S. Army]], but other nations have SG teams operating from the SGC as we learn in season 5.
{{anchor|Janet Fraiser}} Captain/Major '''Janet Fraiser''', the resident [[Physician|Chief Medical Officer]] of the SGC (played by [[Teryl Rothery]], seasons 1–7, 9) – She is responsible for maintaining the health of the SG teams, as well as the SGC's support staff and base personnel. On many occasions, she also cares for the health of alien refugees to Earth, including Goa'uld symbiotes. In her first appearance in "[[The Broca Divide (Stargate SG-1)|The Broca Divide]]", Dr. Fraiser holds the rank of captain, and is promoted to major in Season 3.<ref name="thebrocadivide">{{cite episode| episodelink=The Broca Divide (Stargate SG-1) | title=The Broca Divide | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[Jonathan Glassner]] (writer) | network = [[Showtime (TV network)|Showtime]] | season = 1 | number = 5}}</ref><ref name="hathor">{{cite episode| episodelink=Hathor (Stargate SG-1) | title=Hathor | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[Jonathan Glassner]] (writer) | network = [[Showtime (TV network)|Showtime]] | season = 1 | number = 14}}</ref> In season 1's "[[Singularity (Stargate SG-1)|Singularity]]", Fraiser adopts [[Cassandra (Stargate)|Cassandra]], an alien orphan whose people had been exterminated by the Goa'uld [[System Lord]] [[Nirrti (Stargate)|Nirrti]].<ref name="singularity">{{cite episode| episodelink=Singularity (Stargate SG-1) | title=Singularity | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[Robert C. Cooper]] (writer) | network = [[Showtime (TV network)|Showtime]] | season = 1 | number = 15}}</ref> Dr. Fraiser is killed by a staffweapon blast in season 7's "[[Heroes (Stargate SG-1)|Heroes]]" during an off-world medical emergency,<ref name="heroes">{{cite episode| episodelink=Heroes (Stargate SG-1) | title=Heroes | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[Robert C. Cooper]] (writer) | network = [[Sky One]] | season = 7 | number = 17 & 18}}</ref> but she returns in season 9's "[[Ripple Effect (Stargate SG-1)|Ripple Effect]]" as a [[Parallel universe (fiction)|parallel universe]] version of Dr. Fraiser, in her reality a regular member of SG-1. Before Fraiser returns to her reality, Carter, Jackson and Teal'c are able to give her a final goodbye.<ref name="rippleeffect">{{cite episode| episodelink=Ripple Effect (Stargate SG-1) | title=Ripple Effect | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[Brad Wright]], [[Joseph Mallozzi]] and [[Paul Mullie]] (writers) | network = [[Sky One]] | season = 7 | number = 13}}</ref> Dr. Fraiser is also shown alive in an alternate timeline in the year 2010 in season 4's "[[2010 (Stargate SG-1)|2010]]", but Fraiser and SG-1 alter the timeline to prevent a catastrophe on Earth involving the [[Aschen]] race.<ref name="twoceroonecero">{{cite episode| episodelink=2010 (Stargate SG-1) | title=2010 | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[Brad Wright]] (writer) | network = [[Showtime (TV network)|Showtime]] | season = 4 | number = 16}}</ref>
Fraiser joined the [[United States Air Force]] (USAF) after breaking up with her husband; there she got some training with [[firearm]]s. Her husband didn't want Fraiser to join the [[US military]] which is one of the main reasons for their [[breakup]]. As a [[Physician|doctor]], Fraiser looks for peaceful solutions and is disinclined towards [[armed force|armed solutions]]. In the episode "[[Serpent's Song (Stargate SG-1)|Serpent's Song]]", Fraiser is the only one in [[Stargate Command]] (SGC) who is resistant to the idea to give [[Apophis (Stargate)|Apophis]] over to his enemies. She is eventually forced to give up Apophis.<ref name="characterization">{{cite web|author=David Read |url=http://www.gateworld.net/opinion/columns/chevronnine/a_tribute_to_janet_fraiser.shtml |title=A Tribute to Janet Fraiser |publisher=GateWorld | language=| accessdate=June 18, 2009}}</ref><ref name="fraiser">{{cite web|author=|url=http://www.gateworld.net/omnipedia/characters/links/fraiserjanet.shtml |title=Fraiser, Janet |publisher=GateWorld | language=| accessdate=June 18, 2009}}</ref>
| '''Elliot''' || [[Courtenay J. Stevens]] || Season 5 (3 episodes) || Lieutenant, see '''[[Martouf]]'''.
|-
| '''{{sortname|Louis|Ferretti}}''' || [[French Stewart]], [[Brent Stait]] || ''[[Stargate (film)|Stargate]]''; season 1 (3<!--counting "Children of the Gods" as 2--> episodes)|| USAF officer who participated in the first expedition through the Stargate.
|-
| '''{{sortname|Janet|Fraiser}}''' || [[Teryl Rothery]] || Seasons 1–7, 9 (75 episodes) || Chief Medical Officer of the SGC.
|-
| '''Griff''' || [[Russell Ferrier]] || Season 4 (3 episodes) || Captain, later promoted to major, leader of SG-2.
|-
| '''{{sortname|Walter|Harriman|Walter Harriman (Stargate)}}''' ('''Norman Davis''') || [[Gary Jones (actor)|Gary Jones]] || Seasons 1–10 (108 episodes); ''[[Stargate Atlantis|Atlantis]]'' || SGC technician usually operating the Stargate.
|-
| '''{{sortname|Charles|Kawalsky}}''' || [[John Diehl (actor)|John Diehl]], [[Jay Acovone]] || ''[[Stargate (film)|Stargate]]''; seasons 1–3, 8 (6<!--counting "Children of the Gods" as 2--> episodes) || USAF officer who participated in the first expedition through the Stargate, and later leader of SG-2.
|-
| '''{{sortname|Carolyn|Lam}}''' || [[Lexa Doig]] || Seasons 9–10 (11 episodes) || Chief medical officer of the SGC and daughter of Hank Landry.
|-
| '''{{sortname|Bill|Lee|Bill Lee (Stargate)}}''' || [[Bill Dow]] || Seasons 4, 6–10 (20 episodes); ''[[Stargate Atlantis|Atlantis]]'' || A civilian scientist and engineer at the SGC.
|-
| '''{{sortname|Robert|Makepeace|List of recurring Earth characters in Stargate SG-1#Robert Makepeace}}''' || [[Steve Makaj]] || Seasons 1–3 (5 episodes) || Leader of SG-3.
|-
| '''McKenzie''' || [[Eric Schneider (actor)|Eric Schneider]] || Seasons 1, 3, 5 (4 episodes) || Doctor at the SGC.
|-
| '''Pierce''' || [[Rob Lee (Canadian actor)|Rob Lee]] || Seasons 4–6, 8 (6 episodes) || Captain, later promoted to major, leader of SG-15.
|-
| '''[[Reynolds (Stargate)|Reynolds]]''' || [[Eric Breker]] || Seasons 2, 5, 7–10 (16 episodes) || Major, later promoted to colonel, leader of SG-16 and SG-3.
[[Teryl Rothery]] was asked by then producer and writer (for ''Stargate'') [[Jonathan Glassner]] and [[Brad Wright]] if she wanted to play the role as Fraiser.<ref name="eclipse"/> In an interview, Rothery was asked what it was like to play a [[Physician|doctor]] in ''[[Stargate SG-1]]''. Rothery replied, "just being true to the character. And as far as the medical stuff, knowing what to do and what to say." She got a lot of help from the medical advisor on the set.
===SG team members===
{|class="wikitable"
|-
!rowspan="1" width="50"| #
!rowspan="1" width="950"| Member history
|-
| align="center"| SG-1
| [[Jack O'Neill]], [[Samantha Carter]], [[Daniel Jackson (Stargate)|Daniel Jackson]], [[Teal'c]], [[Jonas Quinn]], [[Cameron Mitchell (Stargate)|Cameron Mitchell]] and [[Vala Mal Doran]].
|-
| align="center"| SG-2
| [[Charles Kawalsky]], Major/Sgt (series changed his rank) Coburn, Sgt. Warren, Casey, Vernon and Louis Ferretti.
|-
| align="center"| SG-3
| Colonel Robert Makepeace, Lieutenant Johnson, Major Castleman, Major Warren, [[Teal'c]], Major Waite, Lieutenant Morrison, Major Lawrence, Colonel Reynolds and Jake Bosworth.
|-
| align="center"| SG-4
| Lieutenant Colonel Sergei Ivanov, Lieutenant Colonel [[John Sheppard (Stargate)|John Sheppard]], Babbis and Walker
|-
| align="center"| SG-5
| Lieutenant Barber, Major / Lieutenant Colonel Harper and Major Altman
|-
| align="center"| SG-6
| Colonel Barnes, Lieutenant Fisher, Brooks and Ryan.
|-
| align="center"| SG-7
| John Smith
|-
| align="center"| SG-8
| ''No team members ever named.''
|-
| align="center"| SG-9
| Captain Jonas Hanson, Lieutenant Frakes, Lieutenant Baker, Lieutenant Connor, Major Benton, Major Stan Kovacek and Lieutenant Grogan.
|-
| align="center"| SG-10
| Major Henry "Hank" Boyd.
|-
| align="center"| SG-11
| Captain Connor, Major Hawkins, Dr. Robert Rothman, Lieutenant Loeder, Sanchez, Colonel Edwards, Major [[Evan Lorne]], Lieutenant Ritter and Lieutenant Menard.
|-
| align="center"| SG-12
| Lieutenant Woeste, Major Hadden, Lieutenant McKenzie, Conway and Stevens.
|-
| align="center"| SG-13
| Colonel Dave Dixon, Dr. Cameron Balinsky, Jake Bosworth and Simon Wells
|-
| align="center"| SG-14
| Major Graham, Captain Blasdale, Lieutenant Astor and Sergeant Lewis
|-
| align="center"| SG-15
| Major Pierce
|-
| align="center"| SG-16
| Lieutenant Colonel Reynolds
|-
| align="center"| SG-17
| Major Mansfield and Lieutenant Elliot
|-
| align="center"| SG-18
|rowspan="4"| ''No team members ever named.''
|-
| align="center"| SG-19
|-
| align="center"| SG-20
|-
| align="center"| SG-21
|-
| align="center"| SG-22
| Colonel Raimi and Dr. Cameron Balinsky
|-
| align="center"| SG-23
|rowspan="3"| ''No team members ever named.''
|-
| align="center"| SG-24
|-
| align="center"| SG-25
|-
|align="center" colspan="30" style="font-size: 8pt"| "Note" — ''Unnamed members are not included.''
|-
|}
In the first two seasons, Rothery didn't have a contract and was booked on every episode in which she appeared. In [[Stargate SG-1 (season 3)|season three]] of ''SG-1'', she finally got a contract deal with the producers. She also commented on her acting life once:<ref name="fraisert">{{cite web|author=Tobias Mauer |url=http://www.gateworld.net/news/2004/12/interviewwithterylrothery.shtml |title= Interview with Teryl Rothery |publisher=GateWorld | language=| accessdate=June 18, 2009}}</ref>
===NID/Trust/IOA characters===
{{cquote|"The life of an actor is always very up and down. So sometimes you work a lot, but sometimes ... So if you're on a series like ''Stargate SG-1'' you have that work for seven years. So that's a gift."|}}
The '''[[NID (Stargate)|NID]]''' is a shadowy [[intelligence agency]] that appears throughout the run of ''Stargate SG-1'' and occasionally on ''[[Stargate Atlantis]]''. The official mandate of the NID is to provide vital civilian oversight of top secret military operations, but one of their unofficial primary goals is to procure alien technologies. A set of well-resourced illegal cells named the Rogue NID uses unscrupulous methods to achieve the goals of the official NID and is later replaced by the '''[[Trust (Stargate)|Trust]]''', a shady interplanetary terrorist group. The '''[[International Oversight Advisory|IOA]]''' ('''International Oversight Advisory''') is a civilian oversight committee created after the United States and Russia revealed the existence of the Stargate Program to the other permanent members of the UN Security Council in season 6.
After her character's death in [[Stargate SG-1 (season 7)|season 7]], there were various rumours which said she would appear in the upcoming ''[[Stargate]]'' film; this never happened. Rothery said it was unlikely since she hadn't had any contact with the ''Stargate'' producers since her character's death.<ref name="fraisert"/> Rothery has stated many times that she "admires" the character because of her "strength" and "intelligence".<ref name="interview"/> [[Robert C. Cooper]], producer for ''Stargate SG-1'', called Rothery about the death of her character. Cooper said, "It is our last year, so we are thinking of killing one of our regulars."<ref name="eclipse">{{cite magazine|author=Carole Gordon |url=http://eclipsemagazine.com/hollywood-insider/1680/ |title=From Doctor Janet to Kiss Me, Kate: Interview with Teryl Rothery |magazine=Eclipse Magazine | accessdate=June 18, 2009}}</ref> Fraiser was killed off in the episode "[[Heroes (Stargate SG-1)|Heroes]]" because the producers thought [[Stargate SG-1 (season 7)|season seven]] would be the last in the series and felt that a death of the main cast was needed.<ref name="interview">{{cite web|author=Kate Ritter |url=http://www.rdanderson.com/stargate/scenes/rothery.htm |title=An Interview with Stargate's Janet Fraiser, Teryl Rothery |publisher=Richard Dean Anderson.com | language=| accessdate=June 18, 2009 |archiveurl= https://web.archive.org/web/20090625163335/http://www.rdanderson.com/stargate/scenes/rothery.htm |archivedate= 2009-06-25}}</ref> Rothery also appeared on the ''Women of Sci-Fi calendar'' produced by fellow ''Stargate'' cast [[Michael Shanks]] and [[Christopher Judge]].<ref name="eclipse"/>
| '''[[Chekov (Stargate)|Chekov]]''' || [[Garry Chalk (actor)|Garry Chalk]] || Seasons 5–6, 8–9 (9 episodes) || Russia's liaison to Stargate Command, Russian representative of the IOA.
|-
| '''{{sortname|Robert|Kinsey|nolink=1}}''' || [[Ronny Cox]] || Seasons 1, 4–8 (11 episodes) || US senator and later Vice President.
|-
| '''{{sortname|Harry|Maybourne}}''' || [[Tom McBeath]] || Seasons 1–6, 8 (11 episodes) || USAF Colonel and member of the NID.
|-
| '''{{sortname|Frank|Simmons|dab=Stargate SG-1}}''' || [[John de Lancie]] || Seasons 5–6 (5 episodes) || NID liaison to Stargate Command.
|-
| '''{{sortname|Richard|Woolsey}}''' || [[Robert Picardo]] || Seasons 7, 9–10 (7 episodes); ''[[Stargate Atlantis|Atlantis]]'' (main) || Member of the NID and later of the IOA.
|-
| '''{{sortname|Hoskins||nolink=1}}''' || [[Peter James Bryant]] || Season 8 (2 episodes)|| Agent of The Trust and the group leader of Jennings and Brooks.
|-
| '''{{sortname|Jennings||nolink=1}}''' || [[Lucas Wolf]] || Season 8 (3 episodes)|| Agent of The Trust
|-
| '''{{sortname|Brooks||nolink=1}}''' || [[Benita Ha]] || Season 8 (2 episodes)|| Agent and technical expert of The Trust.
|}
===Earthshipcrewcharacters===
=== Kevin Elliot ===
{{anchor|Lieutenant Elliot|Kevin Elliot|Elliot (Stargate)|Lieutenant Kevin Elliot (Stargate)}} [[Lieutenant]] '''Kevin Elliot''', (played by Courtenay J. Stevens, season 5) – See '''[[Martouf]]''' – Is transferred to [[SG teams|SG-17]] after successfully proving his worth in an elaborative test for SGC recruits.<ref name="provingground">{{cite episode| episodelink=Proving Ground (Stargate SG-1)| title=Proving Ground | series= Stargate SG-1| serieslink=Stargate SG-1 |credits =[[Andy Mikita]] (director); Ron Wilkerson (writer) | network = [[Sky1]] | season = 5 | number = 13}}</ref> All of SG-17 was killed on his first day of off-world duty, except for Elliot, in an attack on the underground [[Tok'ra]] by the [[Goa'uld]]. Elliot was saved only because of the implantation of the Tok'ra symbiote [[Lantash]].<ref name="summit">{{cite episode| episodelink=Summit (Stargate SG-1)| title=Summit | series= Stargate SG-1| serieslink=Stargate SG-1 |credits =[[Martin Wood (director)|Martin Wood]] (director); [[Joseph Mallozzi]] & [[Paul Mullie]] (writers) | network = [[Sky1]] | season = 5 | number = 15}}</ref> Lantash and Elliot give their lives to save the rest of the team when they realize that Lantash did not have the strength to repair Elliot's injuries and save their lives. Elliot/Lantash were given a vial of Symbiote poison, powerful enough to eliminate the entire occupied force, and, presumably, used it on them to allow SG-1 and [[Jacob Carter]] to escape.<ref name="laststand">{{cite episode| episodelink=Last Stand (Stargate SG-1)| title=Last Stand | series= Stargate SG-1| serieslink=Stargate SG-1 |credits =[[Martin Wood (director)|Martin Wood]] (director); [[Robert C. Cooper]] (writer) | network = [[Sky1]] | season = 5 | number = 16}}</ref>
{{see also|Earth starships in Stargate}}
{| class="wikitable sortable" width="100%"
! width=17% | Character
! width=26% | Played by
! width=24% | Appearances
! width=33% | Description/role
|-
| '''{{sortname|Catherine|Ambrose|List of recurring Earth characters in Stargate SG-1#Catherine Ambrose}}''' || [[Chelah Horsdal]] || Seasons 8–9 (5 episodes) || USAF officer and helmsman of the ''[[Prometheus (Stargate)|Prometheus]]''.
|-
| '''{{sortname|Paul|Emerson}}''' || [[Matthew Glave]] || Seasons 9–10 (6 episodes) || Commander of the ''[[Odyssey (Stargate)|Odyssey]]''.
|-
| '''{{sortname|Erin|Gant|List of recurring Earth characters in Stargate SG-1}}''' || [[Ingrid Kavelaars]] || Seasons 6–7 (3 episodes) || USAF Major and helmsman of the ''[[Prometheus (Stargate)|Prometheus]]''.
|-
| '''{{sortname|Kevin|Marks|Kevin Marks (Stargate)}}''' || [[Martin Christopher]] || Seasons 9–10 (12 episodes) || USAF officer aboard the ''[[Prometheus (Stargate)|Prometheus]]'', ''[[Odyssey (Stargate)|Odyssey]]'' and ''[[Daedalus (Stargate)|Daedalus]]''.
|-
| '''{{sortname|Lionel|Pendergast}}''' || [[Barclay Hope]] || Seasons 8–9 (6 episodes) || Commander of the ''[[Prometheus (Stargate)|Prometheus]]''.
|-
| '''{{sortname|William|Ronson|List of recurring Earth characters in Stargate SG-1#William Ronson}}''' || [[John Novak]] || Seasons 6–7 (2 episodes) || USAF Colonel and commander of the ''[[Prometheus (Stargate)|Prometheus]]''.
|}
According to portraying actor Courtenay J. Stevens, the first draft for the character was that he was supposed to be a young [[Jack O'Neill]] in the then new-[[Spin-off (media)|spin off]] show ''[[Stargate Atlantis]]''. The producers dropped Elliot and minimized his role so that he was never even mentioned in ''Stargate Atlantis''. Many fans of ''Stargate'' thought that Elliot and his team would replace [[Samantha Carter]], [[Teal'c]], [[Daniel Jackson (Stargate)|Daniel Jackson]] and O'Neill as the [[main characters]] of the show. Stevens has stated that the producers took much time to look at new "Options", for the series and further stated that he knew "they were looking at it". But the plans were changed and actor Stevens left the ''Stargate'' set in [[Vancouver]] after the shooting of "[[Last Stand (Stargate SG-1)|Last Stand]]".
===Other recurring Earth characters===
{| class="wikitable sortable" width="100%"
! width=17% | Character
! width=26% | Played by
! width=24% | Appearances
! width=33% | Description/role
|-
| '''{{sortname|Jacob|Carter}}''' || [[Carmen Argenziano]] || Seasons 2– 8 (25 episodes) || Retired USAF Major General, father of Samantha Carter, host to the Tok'ra Selmak.
|-
| '''{{sortname|Adrian|Conrad}}''' || [[Bill Marchant]] || Seasons 5–6 (3 episodes) || Wealthy businessman suffering from an incurable terminal illness.
|-
| '''{{sortname|Paul|Davis|Paul Davis (Stargate)}}''' || [[Colin Cunningham]] || Seasons 2–6, 8 (15 episodes); ''[[Stargate: Continuum|Continuum]]''; ''[[Stargate Atlantis|Atlantis]]'' || USAF Major stationed at the Pentagon.
|-
| '''{{sortname|Julia|Donovan|List of recurring Earth characters in Stargate SG-1#Julia Donovan}}''' || Kendall Cross || Seasons 6, 8–10 (4 episodes) || TV reporter.
|-
| '''{{sortname|Henry|Hayes|Henry Hayes (Stargate)}}''' || [[William Devane]] || Season 7 (3 episodes); ''[[Stargate: Continuum|Continuum]]'' || President of the United States.
|-
| '''{{sortname|Catherine|Langford}}''' || [[Viveca Lindfors]], [[Elizabeth Hoffman (actress)|Elizabeth Hoffman]], various || ''[[Stargate (film)|Stargate]]''; seasons 1–2 (4 episodes) || A woman who acquired an amulet depicting the [[Eye of Ra]] during the excavation of the Stargate in Giza in 1928.
When shooting the episode, "[[Summit (Stargate SG-1)|Summit]]" [[J.R. Bourne]] was booked, so he was replaced with Stevens. Before being cast in the episode "Summit", the producers told the history behind the [[Tok'ra]] symbiote [[Lantash]]. Stevens was later cast as Keras in the ''Stargate Atlantis'' episode "[[Childhood's End (Stargate Atlantis)|Childhood's End]]".<ref name="courtenayjstevensinterview">{{cite web |last=Read |first=David |url=http://www.gateworld.net/interviews/chillin_with_elliot.shtml |title=Chillin' With Elliott |publisher=[[GateWorld]] |date=August 2004 |accessdate=18 June 2009}}</ref>
===Stargate crossover characters===
{{see also|List of Stargate Atlantis characters#Stargate crossover characters|l1=List of Stargate Atlantis crossover characters}}
=== Walter Harriman ===
Several characters who may be better known for their role in ''Stargate Atlantis'' have made appearances in ''SG-1''. They are:
{{anchor|Walter Harriman|Norman Davis|Chevron Guy}} [[Image:Gary Jones stargate cropped.jpg|thumb|Gary Jones played Walter Harriman, an SGC technician who was also known as "Norman Davies" and "Chevron Guy"]]
[[Chief Master Sergeant]] '''Walter Harriman''' (also known as the '''Chevron Guy''' among others, portrayed by [[Gary Jones (actor)|Gary Jones]], seasons 1–10) joined the [[Stargate Command]] (SGC) after excelling in navigation and automatic flight control operations during the first [[Operation Desert Storm|Gulf War]]. General Hammond recruited him as someone with excellent technical ability and a cool head to operate the Stargate under extreme pressure. He specializes in installing, maintaining and repairing bomb navigation, weapons control as well as automatic flight control systems. He is also an expert in radio and navigational equipment, and in maintaining test and precision measurement equipment. He is primarily a Stargate technician, running the dialing computer and other equipment from the Control Room.<ref name="childrenofthegods"/> He also acts as an occasional administrative assistant to the head of [[Stargate Command]], and has manned the flight console on the bridge of the [[Prometheus (Stargate)|Prometheus]].<ref name="walter"/> From [[Stargate SG-1 (season 8)|season 8]] to [[Stargate SG-1 (season 10)|10]], Harriman's role is expanded to advisor to the Head of Command of the SGC.
His name has been a source of confusion for many fans of ''[[Stargate SG-1]]''. Originally, he was simply "[[Technician]]" or "[[Sergeant#United States|Sergeant]]", listed as such in the show credits.<ref name="chevron">{{cite web|author=Gilles Nuytens |url=http://www.thescifiworld.net/interviews/gary_jones_01.htm |title=Interview with Gary Jones |publisher=The SciFi World | language=| accessdate=June 17, 2009}}</ref> At some point, some of the writers gave him the name "Norman Davis", which came with a name tag, but was never used in dialogue. In the episode "2010", [[Jack O'Neill]] refers to him as "Walter". Later, in the eighth season of "Stargate SG-1", the character is addressed as "Sergeant Harriman", with "Harriman" actually basing on [[General (United States)|General]] [[George Hammond (Stargate)|George Hammond]] addressing him as "Airman" what was misheard by fans because of [[Don S. Davis]]'s Texan accent, resulting in the final name of "Walter Harriman". Many fans fondly refer to him as "the Chevron guy" as many of his on-screen appearances, especially earlier on in the show, had him saying "Chevron (insert number here) encoded".<ref name="walter">{{cite web|author=Gilles Nuytens |url=http://www.thescifiworld.net/interviews/gary_jones_02.htm |title=Gary Jones interview |publisher=The SciFi World | language=| accessdate=June 18, 2009}}</ref> On several DVD commentaries after the introduction of the name "Walter", producer-director [[Peter DeLuise]] refers to the character as "Walter Norman" and "Walter Norman Davis". The first time he ever says his own name is in the ''[[Stargate Atlantis]]'' episode "[[Home (Stargate Atlantis)|Home]]".<ref name="footholdeeee">{{cite web|author=D. Read |url=http://www.gateworld.net/interviews/jonesy_encoded.shtml |title=Jonesy Encoded |publisher=GateWorld | language=| accessdate=June 19, 2009}}</ref>
As the series continued Harriman got a heavier role in the series. According to Jones, his role was expanded since [[Richard Dean Anderson]] wanted him as his personal assistant in the show when his character [[Jack O'Neill]] was the leader of the SGC. The ''[[Stargate]]'' producer and writer staff called 2005, ''The Year of Walter'' because the staff evolved Harriman's relationship with [[General (United States)|General]] [[Hank Landry (Stargate)|Hank Landry]].<ref name="walterinterv">{{cite web|author=Gilles Nuytens |url=http://www.thescifiworld.net/interviews/gary_jones_03.htm |title=Gary Jones interview |publisher=The SciFi World | language=| accessdate=June 19, 2009}}</ref> Jones does not have a binding [[contract]] with the ''Stargate'' producers.<ref name="chevron"/>
=== Charles Kawalsky ===
{{anchor|Charles Kawalsky}}
[[File:Jay Acovone Creation Con 2007.jpg|thumb|right|200px|[[Jay Acovone]] at [[San Diego Comic-Con International|Comic Con]], 2007]]
[[Lieutenant Colonel (United States)|Lieutenant Colonel]] '''Charles Kawalsky''' portrayed by [[John Diehl (actor)|John Diehl]] (in the film) and [[Jay Acovone]] (in the series), was first introduced in the 1994 ''[[Stargate (film)|Stargate]]'', as [[Jack O'Neill]]'s [[second in command]] for the first mission through the stargate. In the film Kawalsky holds the rank of [[Lieutenant Colonel (United States)|lieutenant colonel]] in the [[United States Air Force]]. He is recruited by General W.O. West to become a member of the first mission through the [[Stargate (device)|Stargate]]. On [[List of recurring alien characters in Stargate SG-1#Abydonians|Abydos]] under the orders of O'Neill, he takes up the fight against [[Ra (Stargate)|Ra]]. Kawalsky's relationship with [[Daniel Jackson (Stargate)|Daniel Jackson]] worsens throughout the film because Jackson is unable to return them to Earth. He changes his view of Jackson after they defeat Ra. He, O'Neill and [[Louis Ferretti]] decide to keep silent about what really happened during their mission to the planet.<ref name="film">{{cite AV media|type=motion picture| title=[[Stargate (film)|Stargate]] |credits = [[Roland Emmerich]] (director); Roland Emmerich and [[Dean Devlin]] (writers) | publisher = [[Metro–Goldwyn–Mayer]] (MGM) and [[Carolco]]}}</ref>
When the [[Goa'uld]] [[Apophis (Stargate)|Apophis]] attacks [[Stargate Command]] (SGC), [[Captain (United States)#U.S. Army, Air Force, and Marines|Captain]] Kawalsky is reunited with his former teammates and questioned by General [[George Hammond (Stargate)|George Hammond]]. Both he and Feretti refuse to speak about the mission to Abydos. O'Neill is eventually forced to tell that [[Daniel Jackson (Stargate)|Daniel Jackson]] is still alive, and O'Neill, Kawalsky and Ferretti are ordered to bring Jackson back to Earth. Although Kawalsky wore the rank of [[Lieutenant Colonel (United States)|lieutenant colonel]] in the ''Stargate'' film, Kawalsky is introduced as a [[Captain (United States)|captain]] who is promoted to [[Major (United States)|major]], and becomes the leader of the newly formed [[SG team|SG-2]], accompanying [[SG-1]] on their mission to Chul'ac to rescue [[Sha're]] and [[Skaara]]. SG-2 guarded the Stargate and provided cover for SG-1 when they fled from the pursuing [[Jaffa (Stargate)|Jaffa]]. Before Kawalsky returns to Earth, he is invaded by a Goa'uld parasite from a dead Jaffa warrior.<ref name="childrenofthegods">{{cite episode| episodelink=Children of the Gods | title=Children of the Gods (Part 1 & 2) | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[Jonathan Glassner]] and [[Brad Wright]] (writers) | network = [[Showtime (TV network)|Showtime]] | season = 1 | number = 1 & 2}}</ref>
Back on Earth the [[symbiosis|symbiote]] starts to take control of him, resulting in several [[Amnesia|blackouts]]. The [[Medical|medical staff]] of the SGC try to surgically remove the Goa'uld from his body. Though initially successful, the symbiote turns out to be a dead husk whose intelligence has already taken over Kawalsky's mind. He frees himself and tries to flee from the base, setting off a self-destruct mechanism as he dials the Stargate. He is apprehended by [[Teal'c]] while the self-destruct mechanism is disarmed. They fight in front of the open Stargate. Kawalsky is killed when Teal'c forces his head through the [[Stargate (device)#Matter transmission|event horizon]] and closes the gate, severing most of Kawalsky's skull including the lobes controlled by the symbiote.<ref name="theenemywithin">{{cite episode| episodelink=The Enemy Within (Stargate SG-1) | title=The Enemy Within | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[Brad Wright]] (writer) | network = [[Showtime (TV network)|Showtime]] | season = 1 | number = 3}}</ref>
Kawalsky appears in three more episodes of the series in flashback. The first is "[[The Gamekeeper (Stargate SG-1)|The Gamekeeper]]", in which O'Neill and Teal'c encounter Kawalsky in a [[virtual reality]] simulation.<ref name="thegamekeeper">{{cite episode| episodelink=The Gamekeeper (Stargate SG-1) | title=The Gamekeeper | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[Jonathan Glassner]] and [[Brad Wright]] (writers) | network = [[Showtime (TV network)|Showtime]] | season = 2 | number = 4}}</ref> In "[[Point of View (Stargate SG-1)|Point of View]]", Kawalsky and [[Samantha Carter]] from an [[Parallel universe (fiction)|alternate reality]] arrive through the gate seeking help in contacting the [[Asgard (Stargate)|Asgard]].<ref name="pointofview">{{cite episode| episodelink=Point of View (Stargate SG-1)| title=Point of View | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[Jonathan Glassner]], [[Brad Wright]], [[Robert C. Cooper]] and Tor Alexander Valenza (writers) | network = [[Showtime (TV network)|Showtime]] | season = 3 | number = 6}}</ref> His last appearance is in [[Stargate SG-1 (season 8)|season 8]], in which Kawalsky returns in an [[alternate history (fiction)|alternate timeline]] accidentally created when the destruction of their time machine traps SG-1 in the distant past. In a partial mirror to the pilot, Kawalsky accompanies O'Neill, Carter and Daniel to Chulak in part two of "[[Moebius (Stargate SG-1)|Moebius]]". In this last appearance, he again meets his end, although here he is merely shot; it is the alternate Daniel Jackson who is infected with the Goa'uld and killed by Teal'c.<ref name="moebius">{{cite episode| episodelink=Moebius (Stargate SG-1) | title=Moebius | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[Joseph Mallozzi]], [[Paul Mullie]], [[Brad Wright]] and [[Robert C. Cooper]] (writers) | network = [[Sky One]] | season = 8 | number = 20}}</ref>
Darren Sumner called Kawalsky "one of the [1994] film's strongest characters". Sumner called the high death numbers of secondary and recurring characters on the show, ''The Kawalsky Effect''.<ref name="thekawalskyeffect">{{cite web|author=Darren Sumner |url=http://www.gateworld.net/opinion/columns/gatewatch/the_kawalsky_effect.shtml |title=The Kawalsky Effect |publisher=GateWorld | language=| accessdate=June 15, 2009}}</ref> A Kawalsky [[action figure]] was created after the release of the 1994 film.<ref name="actionman">{{cite web|author= |url=https://www.amazon.com/dp/B001DQDADO |title=Stargate the movie Lt. Kawalsky action figure |publisher=Amazon.com | language=| accessdate=April 5, 2009}}</ref> He also has a card in the [[card game]], ''[[Stargate TCG]]''. In the card game he is listed as a good soldier.<ref name="cardgame">{{cite web|author=|url=http://sgtcg.drekorian.cz/karta.php?id=89 |title=Charles Kawalsky, Good Soldier |publisher=Stargate TCG.cz | language=| accessdate=May 23, 2009}}</ref> While only appearing in six episodes in total, actor [[Jay Acovone]] frequently appears at ''Stargate'' conventions.<ref name="convesn">{{cite web|author=Sam Sloan |url=http://www.sliceofscifi.com/2007/11/25/con-report-secaucus-stargate-con/ |title=CON Report: Secaucus Stargate CON |publisher=Slice of SciFi | language=| accessdate=May 5, 2009}}</ref>
=== "Sly" Siler ===
{{anchor|Siler}} [[Master Sergeant]] '''"Sly" Siler''', (played by [[Dan Shea (actor)|Dan Shea]], seasons 1–10) – A sergeant at the SGC and one of its primary technicians and engineers. First appearing in season 1's "[[Solitudes (Stargate SG-1)|Solitudes]]", he remains a background character throughout the run of ''Stargate SG-1'' and also occasionally appears in Earth-based episodes of ''[[Stargate Atlantis]]''. Dan Shea is primarily the [[stunt co-ordinator]] for ''Stargate SG-1'', responsible for the budgets and locations of stunts, and the hiring of stunt people before co-ordinating all stunt action.<ref name=tvzones46_28>{{Cite journal |last=Eramo |first=Steven | title=Dan Dare – Stunt man |newspaper=[[TV Zone]] |issue=Special 46 |pages=28–29 |date=July 2002 }}</ref> He is also a stunt double for [[Richard Dean Anderson]], for whom he stood in and stunt-doubled in ''[[MacGyver (1985 TV series)|MacGyver]]''.<ref name="dansheainterview">{{cite web |last=Colvin |first=Chad |url=http://www.gateworld.net/interviews/stunts_and_wrenches.shtml |title=Stunts and Wrenches – GateWorld talks with Dan Dan Shea |publisher=[[GateWorld]] |date=November 2008 |accessdate=June 18, 2009}}</ref> Siler is subsequently shown to be involved in many accidents at the SGC, which is parodied in dialogue and action in several ''SG-1'' episodes such as season 4's "[[Window of Opportunity (Stargate SG-1)|Window of Opportunity]]", season 7's "[[Heroes (Stargate SG-1)|Heroes]]" and the milestone episode "[[200 (Stargate SG-1)|200]]".
Shea first [[audition]]ed for the role as Siler with [[executive producer]] [[Brad Wright]] and director [[Martin Wood (director)|Martin Wood]]. Shea commented on his first audition that he tried to be "Funny", thinking he could get the role easier that way. Executive producer Michael Greenberg said that Shea "Blew it", Shea then went for a second audition acting more serious, since according to Greenberg the role was "Serious" and he needed to act that way.<ref name="dansheainterview"/> Siler also frequently appears in the background of scenes carrying an oversized [[wrench]],<ref name=tvzones46_28 /> which he sometimes hands to director [[Martin Wood (director)|Martin Wood]] as a [[Theatrical property|gag prop]] in the series. Siler's first name is never mentioned in dialogue in the series, although his uniform patch and magazines give his first name as "Sly" several times,<ref name=tvzones46_28 /><ref name="continuum">{{cite episode| episodelink=Stargate: Continuum | title=Stargate: Continuum | series= Stargate franchise | serieslink=Stargate | credits = [[Martin Wood (director)|Martin Wood]] (director); [[Brad Wright]] (writer) | network = [[Sci Fi Channel (United States)|Sci Fi Channel]] | season = (2008) | number = Film 3 }}</ref> and his uniform patch in "[[Entity (Stargate SG-1)|Entity]]" reads "Dan". According to producer and writer [[Peter DeLuise]], Siler's name and dialog deliberately contain the letter "S" because Dan Shea lisps.<ref name=ac_716>{{cite video |people=[[Peter DeLuise|DeLuise, Peter]] |date =2004 |title=Audio commentary for "[[Death Knell (Stargate SG-1)|Death Knell]]" |medium= DVD |publisher=[[MGM]]}}</ref>
Shea had previous worked with both [[Richard Dean Anderson]] (who portrayed [[Jack O'Neill]]) and Greenberg before on the American [[television series]] ''[[MacGyver (1985 TV series)|MacGyver]]'' in the 80s and early 90s as Anderson's stand-in in stunt scenes, he continued this role in ''[[Stargate SG-1]]''. Anderson's partner Greenberg gave the job as [[stunt coordinator]] and stand-in to Shea in ''Stargate SG-1''. The first time Shea was officially double for Anderson was in [[Toronto]] when they did a ''MacGyver'' movie; Anderson had broken his foot so Shea was forced to do a stand-in.<ref name="dansheainterview"/>
=== Minor characters ===
{{anchor|Louis Ferretti}} [[Major (United States)|Major]] '''Louis Ferretti''', (played by [[French Stewart]] in the film as Lieutenant Louis Ferretti and [[Brent Stait]] in season 1) – A member of the [[United States Air Force]] and one of the four survivors of the first expedition through the Stargate in ''[[Stargate (film)|Stargate]]''.<ref name="film"/> Ferretti joins O'Neill's team on another mission to [[Abydos (Stargate)|Abydos]] in "[[Children of the Gods]]", and is put in charge of the SG-2 team after the death of Charles Kawalsky in "[[The Enemy Within (Stargate SG-1)|The Enemy Within]]".<ref name="childrenofthegods"/><ref name="theenemywithin"/> Ferretti makes his last appearance in "[[Within the Serpent's Grasp (Stargate SG-1)|Within the Serpent's Grasp]]" to follow SG-1 through the Stargate, and is mentioned in season 3's "[[Shades of Grey (Stargate SG-1)|Shades of Grey]]" as a possible new leader of SG-1.<ref name="shadesofgray"/>
{{anchor|Robert Makepeace|Makepeace (Stargate)}} [[Colonel (United States)|Colonel]] '''Robert Makepeace''' (played by Steve Makaj, seasons 1–3) was a former member of the [[United States Marine Corps]] and of [[Stargate Command]] (SGC). Originally, Makepeace was the commander of [[SG teams|SG-3]]. His first on-screen appearance is in "[[The Broca Divide]]" as ranking officer and team leader of SG-3.<ref name="thebrocadivide"/> He reappears in the two episodes, two-parters in ''[[Stargate SG-1]]'' [[Stargate SG-1 (season 2)|season 2]]. In the two-parters of season 2, Makepeace leads a rescue mission to save SG-1 (without [[Teal'c]]) from the grasp of [[Hathor (Stargate)|Hathor]] in "[[Into the Fire (Stargate SG-1)|Into the Fire]]".<ref name="tokra">{{cite episode| episodelink=Tok'ra (Stargate SG-1) | title=Tok'ra | series= Stargate SG-1| serieslink=Stargate SG-1 |credits =[[Brad Turner (director)|Brad Turner]] (director); [[Jonathan Glassner]] (writer) | network = [[Showtime (TV network)|Showtime]] | season = 2 | number = 9 & 10}}</ref><ref name="intothefire">{{cite episode| episodelink=Into the Fire (Stargate SG-1) | title=Into the Fire | series= Stargate SG-1| serieslink=Stargate SG-1 |credits =[[Martin Wood (director)|Martin Wood]] (director); [[Brad Wright]] (Part 1 and 2) and [[Jonathan Glassner]] (Part 1) (writers) | network = [[Showtime (TV network)|Showtime]] | season = 2 & 3 | number = 22 & 1}}</ref> In season 3's "[[Shades of Grey (Stargate SG-1)|Shades of Grey]]", Makepeace is discovered to be a spy for the rogue [[NID (Stargate)|N.I.D.]] group under the command of Colonel [[Harry Maybourne]], who is covertly reverse-engineering stolen alien technologies. Smaller items stolen by the rogue group would be left on a designated world for Makepeace to covertly pick up and pack back to Earth in his gear during routine missions. O'Neill had Makepeace arrested and charged with [[high treason]] against the United States and its allies.<ref name="shadesofgray">{{cite episode| episodelink=Shades of Grey (Stargate SG-1) | title=Shades of Grey | series= Stargate SG-1| serieslink=Stargate SG-1 |credits =[[Martin Wood (director)|Martin Wood]] (director); [[Jonathan Glassner]] (writer) | network = [[Sky1]] | season = 3 | number = 18}}</ref> While it is unknown who immediately replaced Makepeace as the commander of SG-3, eventually this position was assigned to Colonel Reynolds.<ref name="lostcity">{{cite episode| episodelink=Lost City (Stargate SG-1) | title=Lost City | series= Stargate SG-1| serieslink=Stargate SG-1 |credits =[[Martin Wood (director)|Martin Wood]] (director); [[Brad Wright]] and [[Robert C. Cooper]] (writers) | network = [[Sky1]] | season = 7 | number = 21 & 22}}</ref>
{{anchor|Albert Reynolds|Reynolds (Stargate)}} [[Colonel (United States)|Colonel]] '''Albert Reynolds''', (played by Eric Breker, seasons 2, 5, 7–10) – Introduced in "[[Touchstone (Stargate SG-1)|Touchstone]]" as a Major stationed at Area 51 and a member of the [[Stargate Program#NID|National Intelligence Department]] (NID). In early 2001, He is promoted to [[lieutenant colonel]] and was given command of [[SG teams|SG-16]] on a mission to [[Velona]].{{citation needed|date=June 2009}} By early 2003, Reynolds had received command of [[SG teams|SG-3]], succeeding Robert Makepeace who was charged for [[high treason]] against the [[United States]] and its allies.<ref name="lostcity"/> He was also one of the few airman who helped [[Jack O'Neill]] defend Stargate Command against the [[Replicators (Stargate)|Replicator]] army that Replicator Carter had sent through the [[Stargate (device)|Stargate]] to attack Earth while she focused on conquering the Milky Way galaxy. Reynolds was the leader of the SGC during [[List of Stargate SG-1 characters#Hank Landry|Hank Landry]]'s vacation to [[Jack O'Neill]]'s cabin, [[Samantha Carter]] assumed his post until he returned from his mission to P9J-333.
{{anchor|Robert Rothman}} [[Physician|Doctor]] '''Robert Rothman''', (played by Jason Schombing, seasons 3–4) – A scientist who prior to joining Stargate Command was Daniel's research assistant. He first appears in season 3's "[[Forever in a Day (Stargate SG-1)|Forever In A Day]]" in a [[Hand device]]-induced delusion of Daniel Jackson, where he is placed on SG-1. His first non-fantasy appearance is in "[[Crystal Skull (Stargate SG-1)|Crystal Skull]]", where Rothman is tasked with researching a crystal skull. Rothman becomes a host to a Goa'uld larva and during a rescue mission on an offworld archaeological dig site in "[[The First Ones (Stargate SG-1)|The First Ones]]" and is shot dead by Colonel Jack O'Neill.
{{anchor|Major Griff (Stargate)|Major Griff|Griff (Stargate)|Michael Griff}} [[Major (United States)|Major]] '''Michael Griff''', (played by Russell Ferrier, season 4) – Was a member of [[SG teams|SG-2]] as a captain. He accompanied [[SG-1]] in its search to recover [[SG teams|SG-11]] and Dr. Daniel Jackson on [[P3X-888]]; during the course of the mission he was wounded by a staff weapon blast, but recovered. As commander of SG-2, Griff led a search for SG-1 after that team went missing on P3R-118. After braving a glacier that Administrator Calder had insisted SG-1 had set out to investigate, he became convinced that Colonel [[Jack O'Neill|O'Neill]] would never have authorized such a mission. At General [[George Hammond (Stargate)|Hammond]]'s instruction, Griff drew up plans for a covert search and rescue mission, which ultimately proved unnecessary. Later that year, Griff and SG-2 were assigned to "babysit" a team of scientists on M4C-862, a mission he sarcastically described as "non-stop excitement". When O'Neill and [[Teal'c]] arrived to relieve him, he was visibly pleased not to be responsible for dealing with the scientists anymore.
{{anchor|Bill Lee|Bill Lee (Stargate)|Lee (Stargate)}} [[Physician|Doctor]] '''Bill Lee''', (played by [[Bill Dow]], seasons 4, 6–10) – A civilian scientist and engineer who works at Stargate Command and is often called upon to work with alien technology. He first appears in "[[Prodigy (Stargate SG-1)|Prodigy]]" but does not step in the foreground until "[[Evolution (Stargate SG-1)|Evolution]]" where he and Daniel go on a mission to Honduras to locate the Ancients' healing device but are captured and tortured by local terrorists. As seen in "[[Heroes (Stargate SG-1)|Heroes]]", Dr. Lee is responsible for creating a staff weapon-resistant armor. He is also a recurring character on ''Stargate Atlantis''. He devises a way to relay a warning to Atlantis in "[[Critical Mass (Stargate Atlantis)|Critical Mass]]" and gates to the Pegasus Galaxy from the Midway Station in "[[Adrift (Stargate Atlantis)|Adrift]]" when Atlantis goes missing. Dr. Lee remains stationed at Midway, training [[List of Stargate Atlantis characters#Kavanagh|Kavanagh]] as his replacement, until the midway station is destroyed in "[[Midway (Stargate Atlantis)|Midway]]". Dr. Lee is seen in Stargate Universes pilot "[[air (Stargate Universe)|Air]]" as the person Dr. Nicholas Rush ([[Robert Carlyle]]) transfers to using the Communication device with stones (see [[Ancient technology in Stargate]])
{{anchor|Evan Lorne|Evan Lorne (Stargate)|Major Lorne (Stargate)|Major Evan Lorne|Lorne (Stargate)|Lee (Stargate)}} [[Major (United States)|Major]] '''[[Evan Lorne]]''', (played by [[Kavan Smith]], seasons 7 and 10) – A member of SG-11, Lorne first appears in ''[[Stargate SG-1]]'' episode "[[Enemy Mine (Stargate SG-1)|Enemy Mine]]".<ref name="enemymine">{{cite episode| episodelink=Enemy Mine (Stargate SG-1) | title=Enemy Mine | series= Stargate SG-1 | serieslink=Stargate SG-1 |credits = [[Peter DeLuise]] (director & writer) | network = [[Sci Fi Channel (United States)|Sci Fi Channel]] | season = 7| number = 7}}</ref> Lorne appears as the team leader of the [[SG-1]] unit in an alternate universe in the ''SG-1'' season 10 episode "[[Stargate SG-1 (season 10)#ep207|The Road Not Taken]]".<ref name="roadnottaken">{{cite episode| episodelink=The Road Not Taken (Stargate SG-1) | title=The Road Not Taken | series= Stargate SG-1 | serieslink=Stargate SG-1 |credits = [[Andy Mikita]] (director); [[Alan McCullough (writer)|Alan McCullough]] (writer) | network = [[Sky1]] | season = 10 | number = 13}}</ref> Lorne reappears as a part of the new personnel sent after [[The Siege (Stargate Atlantis)|the Wraith siege]] by the ''[[Daedalus (Stargate)|Daedalus]]'' in ''[[Stargate Atlantis]]''.<ref name="runnerepisode">{{cite episode| episodelink=Runner (Stargate Atlantis) | title=Runner | series= Stargate Atlantis | serieslink=Stargate Atlantis |credits = [[Martin Wood (director)|Martin Wood]] (director); [[Robert C. Cooper]] (writer) | network = [[Sci Fi Channel (United States)|Sci Fi Channel]] | season = 2| number = 3}}</ref>
{{anchor|Carolyn Lam}} [[Physician|Doctor]] '''Carolyn Lam''', (played by [[Lexa Doig]], seasons 9–10) – Stargate Command's chief medical officer in seasons 9 and 10. She first appears in "[[Avalon (Stargate SG-1)|Avalon Part 2]]" and is seemingly the first permanent one since the death of Dr. [[Janet Fraiser]] in season 7. Prior to joining Stargate Command, Dr. Lam worked with the [[Centers for Disease Control and Prevention]]; her specialty is infectious diseases. Dr. Lam has a strained relationship with her father, General [[Hank Landry (Stargate)#Hank Landry|Hank Landry]]. In "[[The Fourth Horseman (Stargate SG-1)|The Fourth Horseman]]", General Landry apologizes for not having been with her when she needed him as a child. Carolyn, her father and her mother Kim Lam, have dinner in the episode "[[Family Ties (Stargate SG-1)|Family Ties]]". Actress [[Lexa Doig]] is the real life spouse of [[Michael Shanks]], who plays [[Daniel Jackson (Stargate)|Daniel Jackson]].
The [[NID (Stargate)|National Intelligence Department]] (NID) is a shadowy [[intelligence agency]] that appears throughout the run of ''[[Stargate SG-1]]'' and occasionally on ''[[Stargate Atlantis]]''. The official mandate of the NID is to provide vital civilian oversight of top secret military operations, but one of their unofficial primary goals is to procure alien technologies. A set of well-resourced illegal cells named the Rogue NID uses unscrupulous methods to achieve the goals of the official NID and is later replaced by [[Trust (Stargate)|The Trust]], a shady interplanetary terrorist group. The [[International Oversight Advisory]] (IOA) is a civilian oversight committee created after the United States and Russia revealed the existence of the Stargate Program to the other permanent members of the UN Security Council in season 6.
=== Malcolm Barrett ===
{{anchor|Barrett (Stargate)|Agent Barrett (Stargate)|Malcolm Barrett (Stargate)}} [[Special agent]] '''Malcolm Barrett''', (played by [[Peter Flemming]], seasons 5–7, 9–10) – An [[NID (Stargate)|NID]] agent introduced in season 5's "[[Wormhole X-Treme!]]".<ref name="wormholextreme">{{cite episode| episodelink=Wormhole X-Treme! (Stargate SG-1) | title=Wormhole X-Treme! | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[Peter DeLuise]] (director); [[Brad Wright]], [[Joseph Mallozzi]] and [[Paul Mullie]] (writers) | network = [[Showtime (TV network)|Showtime]] | season = 5 | number = 12}}</ref> His first significant appearance follows in "[[Smoke & Mirrors (Stargate SG-1)|Smoke & Mirrors]]", where he helps uncovering a shadow group behind the NID who tried to attribute Senator Kinsey's apparent assassination to O'Neill.<ref name="smokeandmirrors"/> After collaborating with SG-1 in season 7's "[[Heroes (Stargate SG-1)|Heroes, Part 2]]" and "[[Resurrection (Stargate SG-1)|Resurrection]]",<ref name="heroes"/><ref name="resurrection">{{cite episode| episodelink=Resurrection (Stargate SG-1) | title=Resurrection | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[Amanda Tapping]] (director); [[Michael Shanks]] (writer) | network = [[Sky1]] | season = 7 | number = 19}}</ref> Barrett expresses a personal romantic interest in Samantha Carter in season 9's "[[Ex Deus Machina (Stargate SG-1)|Ex Deus Machina]]" and season 10's "[[Uninvited (Stargate SG-1)|Uninvited]]", but she rejects his advances.<ref name="exdeusmachina">{{cite episode| episodelink=Ex Deus Machina (Stargate SG-1) | title=Ex Deus Machina | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[Martin Wood (director)|Martin Wood]] (director); [[Joseph Mallozzi]] and [[Paul Mullie]] (writers) | network = [[Sci Fi Channel (United States)|Sci Fi Channel]] | season = 9 | number = 7}}</ref><ref name="uninvited">{{cite episode| episodelink=Uninvited (Stargate SG-1) | title=Uninvited | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[Will Waring]] (director); [[Damian Kindler]] (writer) | network = [[Sci Fi Channel (United States)|Sci Fi Channel]] | season = 10 | number = 5}}</ref> His last ''SG-1'' appearance is in "[[Dominion (Stargate SG-1)|Dominion]]".<ref name="dominion">{{cite episode| episodelink=Dominion (Stargate SG-1) | title=Dominion | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[William Waring]] (director); Alex Levine (story) and [[Alan McCullough (writer)|Alan McCullough]] (teleplay) | network = [[Sci Fi Channel (United States)|Sci Fi Channel]] | season = 10 | number = 19}}</ref> Agent Barrett also recurs in ''[[Stargate Atlantis]]''.
He warns General Landry in season 2's "[[Critical Mass (Stargate Atlantis)|Critical Mass]]" of the [[Trust (Stargate)|Trust]]'s plan to destroy [[Atlantis (Stargate)|Atlantis]] with a bomb, and aids several Expedition team members to track down [[Rodney McKay]]'s sister [[Jeannie Miller]] on Earth in season 4's "[[Miller's Crossing (Stargate Atlantis)|Miller's Crossing]]".<ref name="criticalmass">{{cite episode| episodelink=Critical Mass (Stargate Atlantis) | title=Critical Mass | series= Stargate Atlantis | serieslink=Stargate Atlantis |credits = [[Andy Mikita]] (director); [[Brad Wright]] (story) and [[Carl Binder]] (story & teleplay) | network = [[The Movie Network]] | season = 2 | number = 13}}</ref><ref name="millerscrossing">{{cite episode| episodelink=Miller's Crossing (Stargate Atlantis) | title=Miller's Crossing | series= Stargate Atlantis | serieslink=Stargate Atlantis |credits = [[Andy Mikita]] (director); [[Martin Gero]] (writer) | network = [[Sci Fi Channel (United States)|Sci Fi Channel]] | season = 4 | number = 9}}</ref>
Peter Flemming had a two-line audition for "Wormhole X-Treme" for a "[[Men in Black|Man in Black]]" character in a possible recurring role. Every NID character introduced before Agent Barrett "had been very shady, always had an agenda", and Barrett was "the first mainstay in NID who is actually law-abiding[...], honest, [and] a good person".<ref>{{cite web |last=Read |first=David |url=http://www.gateworld.net/interviews/agent_of_honor.shtml |title=Agent Of Honor – GateWorld talks with Peter Flemming |publisher=[[GateWorld]] |date=November 2008 |accessdate=November 29, 2008}}</ref>
=== Harry Maybourne ===
{{anchor|Harry Maybourne|Colonel Maybourne|Maybourne (Stargate)}} [[Colonel (United States)|Colonel]] '''Harry Maybourne''', (played by [[Tom McBeath]], seasons 1–6, 8) – A USAF Colonel introduced in season 1's "[[Enigma (Stargate SG-1)|Enigma]]" as an NID member with ambiguous morals and loyalties. In season 2's "[[Bane (Stargate SG-1)|Bane]]", Maybourne leads an NID attempt to claim Teal'c for study after alien insect infected Teal'c. After further antagonizing SG-1 through rogue NID operations in "[[Touchstone (Stargate SG-1)|Touchstone]]" and "[[Shades of Grey (Stargate SG-1)|Shades of Grey]]", and helping SG-1 in "[[Foothold (Stargate SG-1)|Foothold]]" <ref name="shadesofgray"/><ref name="enigma">{{cite episode| episodelink=Enigma (Stargate SG-1) | title=Enigma | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[Katharyn Michaelian Powers]] (writer) | network = [[Showtime (TV network)|Showtime]] | season = 1 | number = 17}}</ref><ref name="foothold">{{cite episode| episodelink=Foothold (Stargate SG-1) | title=Foothold | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = Heather E. Ash (writer) | network = [[Showtime (TV network)|Showtime]] | season = 3 | number = 14}}</ref> Maybourne flees to Russia and aids in establishing the Russian Stargate Program. He is caught in season 4's "[[Watergate (Stargate SG-1)|Watergate]]", convicted of treason, and placed on [[death row]].<ref name="watergate">{{cite episode| episodelink=Watergate (Stargate SG-1)| title=Watergate | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[Jonathan Glassner]] (writer)| network = [[Showtime (TV network)|Showtime]] | season = 4 | number = 7}}</ref> O'Neill contacts Maybourne in "[[Chain Reaction (Stargate SG-1)|Chain Reaction]]" to help reinstate General Hammond, who was blackmailed into resigning from his position.<ref name="chainreaction">{{cite episode| episodelink=Chain Reaction (Stargate SG-1)| title=Chain Reaction | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[Joseph Mallozzi]] and [[Paul Mullie]] (writers) | network = [[Sky1]] | season = 4 | number = 15}}</ref> Maybourne escapes after the mission's success and covertly helps O'Neill in season 5's "[[Desperate Measures (Stargate SG-1)|Desperate Measures]]" and "[[48 Hours (Stargate SG-1)|48 Hours]]" in the [[Adrian Conrad]] case.<ref name="hours">{{cite episode| episodelink=48 Hours (Stargate SG-1)| title=48 Hours | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[Robert C. Cooper]] (writer) | network = [[Sky1]] | season = 5 | number = 14}}</ref><ref name="tealchealomeee">{{cite episode| episodelink=Desperate Measures (Stargate SG-1)| title=Desperate Measures | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[Joseph Mallozzi]] and [[Paul Mullie]] (writers) | network = [[Showtime (TV network)|Showtime]] | season = 5 | number = 11}}</ref> Maybourne tricks SG-1 into taking him off-world in season 6's "[[Paradise Lost (Stargate SG-1)|Paradise Lost]]", and is eventually exiled to a far-off planet.<ref name="paradise">{{cite episode| episodelink=Paradise Lost (Stargate SG-1)| title=Paradise Lost | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[Robert C. Cooper]] (writer) | network = [[Sky1]] | season = 6 | number = 15}}</ref> When SG-1 meets him again in season 8's "[[It's Good To Be King (Stargate SG-1)|It's Good To Be King]]", Maybourne leads a life of leisure as the seemingly clairvoyant ruler of the local peoples, King Arkhan I. Although the people later discover the deception, they welcome him to stay as his technological expertise has improved their standard of life, and SG-1 returns to Earth without him. He had ascended to power using an Ancient time-travelers log of his journeys into the future of the planet and ended up facing a Goa'uld invasion, but the soldiers were repelled by Jackson and Teal'c with help from one of the villagers, and O'Neill destroyed in the ship in orbit, killing the System Lord behind the attack. When the team leave, O'Neill and Maybourne part amicably with Maybourne having finally accepted responsibility towards the people he was ruling. He also reveals that he had more than one wife.<ref name="itsgoodtobeking">{{cite episode| episodelink=It's Good To Be King (Stargate SG-1)| title=It's Good To Be King | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = Michael Greenburg, [[Peter DeLuise]], [[Joseph Mallozzi]] and [[Paul Mullie]] (writers) | network = [[Sky1]] | season = 8 | number = 13}}</ref>
Maybourne's most notable character trait is his ambiguous morals and loyalties. Maybourne's relationship with [[Jack O'Neill]] in the show varies from enemy to collaborator. After his arrest, most of his cronies left Maybourne for dead in [[jail]]. O'Neill agrees to help Maybourne temporarily get out of jail, if he in turn could get [[General (United States)|General]] [[George Hammond (Stargate)|George Hammond]] reinstated as leader of the [[Stargate Command]] (SGC) center. Early on in Maybourne's character development there were rumours of him being in love with [[Samantha Carter]]. It was originally planned that a scene in the series would depict Maybourne's feelings for Carter, but the scene was cut and the relationship was never spoken about again amongst the ''Stargate SG-1'' producers and writers alike. When the portraying actor [[Tom McBeath]] was asked about the O'Neill–Maybourne relationship, he explained:<ref name="tommcbeath">{{cite web|first=David |last= Read |url=http://www.gateworld.net/interviews/hanging_with_harry.shtml |title=Hanging with Harry: GateWorld talks to Tom McBeath |publisher=GateWorld | language=| accessdate=April 6, 2009}}</ref>
{{cquote|"I can't stand you, but at some level I have a lot of respect for you. And I do actually, grudgingly have a good time when you're around, and things seem to work out."|}}
McBeath auditioned for the part of Maybourne in [[Vancouver]], [[British Columbia]], [[Canada]].<ref name="thefifthrace">{{cite web |author=Jaclyn |url=http://thefifthrace.net/tom.htm |title=Tom McBeath – Characters, bad guys and… chewing gum? |publisher=The Fifth Race.net |accessdate=April 6, 2009 |url-status=dead |archiveurl=https://web.archive.org/web/20090627005004/http://thefifthrace.net/tom.htm |archivedate=June 27, 2009 }}</ref> After auditioning for the part as Harry Maybourne, the producers revealed that he "maybe" could get a spot as a recurring character in the show. McBeath called his role as Maybourne at the start of the series "boring", but was glad for the new change in the character's direction in the series after he was convicted for treason. McBeath also commented that the writers and the producers for the show had more "fun" when his character started to "loosen" up.<ref name="tommcbeath"/> McBeath once stated that the character of Maybourne diminished after [[Richard Dean Anderson]]'s departure from the show in [[Stargate SG-1 (season 8)|season 8]].<ref name="biography">{{cite web|first=Gilles |last=Nuytens |url=http://www.thescifiworld.net/interviews/tom_mcbeath_01.htm |title=Tom McBeath interview |publisher=The SciFi World | language=| accessdate=April 6, 2009}}</ref>
=== Robert Kinsey ===
[[Image:Ronnycox.jpg|thumb|Ronny Cox plays Robert Kinsey]]
{{anchor|Robert Kinsey}} [[United States Senate|Senator]] '''Robert Kinsey''', (played by [[Ronny Cox]], seasons 1, 4–8) – A US senator who first appears in season 1's "[[Politics (Stargate SG-1)|Politics]]". In "Politics", Kinsey ignores warnings of an imminent Goa'uld invasion and instead manages to briefly shut down Stargate Command for budget reasons. In season 4's "[[Chain Reaction (Stargate SG-1)|Chain Reaction]]", Kinsey and the [[NID (Stargate)|NID]] temporarily succeed in controlling the Stargate by blackmailing General Hammond into retirement.<ref name="chainreaction"/> In season 5's "[[2001 (Stargate SG-1)|2001]]", Kinsey aims to gain prestige through an alliance with the [[Aschen]], but the alliance fails. (However, the alliance went ahead in the alternate but unfulfilled future reality witnessed in season 4's "[[2010 (Stargate SG-1)|2010]]", in which Kinsey also achieved his goal of the presidency.)<ref name="twoceroonecero"/> In season 6's "[[Smoke and Mirrors (Stargate SG-1)|Smoke and Mirrors]]", a group controlling the rogue NID, known as "the Committee", tries to assassinate Kinsey and frame Col. O'Neill for his murder, but NID agent Malcolm Barret and SG-1 foil this attempt.<ref name="smokeandmirrors">{{cite episode| episodelink=Smoke and Mirrors (Stargate SG-1)| title=Smoke and Mirrors | series= Stargate SG-1| serieslink=Stargate SG-1 | credits = [[Peter DeLuise]] (director); [[Katharyn Powers]] (writer) | network = [[Sky1]] | season = 6 | number = 14 }}</ref> Kinsey becomes [[Vice President of the United States|Vice-President]] in season 7's "[[Inauguration (Stargate SG-1)|Inauguration]]" and tries again to take control of the Stargate Program in "[[Lost City (Stargate SG-1)|Lost City]]". Shortly after NID Agent [[Richard Woolsey]] presents incriminating evidence against Kinsey to President [[Henry Hayes (Stargate)|Henry Hayes]] in the same episode, Hayes "accepts" Kinsey's resignation.<ref name="lostcity"/><ref name="inauguration"/> Kinsey makes his last appearance in season 8's "[[Stargate SG-1 (season 8)|Full Alert]]", where the SGC convinces Kinsey to go undercover to undermine the hierarchy of the Trust. However, the Goa'uld have completely infiltrated the Trust through their operatives working outside of the solar system, and have already implanted a symbiote within Kinsey to aid in their plans of starting a nuclear war between the US and Russia. After the SGC foil the attempt, Kinsey flees aboard an [[Al'kesh]], but Kinsey's future remains uncertain as the Al'Kesh is destroyed while he operated a transport device.<ref name="fullalert"/> Kinsey is briefly mentioned as a President in the alternative timeline (with Hayes as Secretary of Defense) in season 8 finale "[[Moebius (Stargate SG-1)|Moebius]]".
The producers of ''[[Stargate SG-1]]'' asked [[Ronny Cox]] if he would be interested in a role in one episode, but according to Cox it was "so much fun that they and I decided we would like to do more together". According to [[executive producer]] [[Brad Wright]], every time they got a [[Teleplay|script]] from an outside editor, Kinsey was included. Cox has been noted for saying that the character has become a "Malevolent force on the show". Because of the collaboration between the producers and himself. Cox described him as a "self-aggrandizing senator who like[s] to throw his weight around", and as "Kinsey feels that the [[Stargate (device)|Stargate]] [is] being used in completely the wrong way and one that is endangering American ideals and a way of life that he believes in" and a "Born-again, right-wing, Christian fundamentalist"; Cox played him as a heroic antagonist rather than villainous. Cox was approached by the producers to play Kinsey instead of auditioning himself. Kinsey holds the position of chairman of the [[United States Senate Committee on Appropriations|Senate Appropriations Committee]] until season 7 and oversees the national defense budget of secret projects such as the [[Stargate Program]].<ref name="ronnycoxinterview">{{cite web|first=| last= |url=http://www.gateworld.net/interviews/senator_on_the_rise.shtml |title=Senator On the Rise |publisher=[[GateWorld]] | date=September 2003 | accessdate=June 19, 2009}}</ref><ref name=tvzones55_64>{{Cite journal | last=Eramo | first=Steven | author-link= | title=Stargate SG-1 – Ronny Cox – Politically Incorrect | journal=[[TV Zone]] | issue=Special #55 | pages=64 | date=February 2004 | url=}}</ref>
=== Richard Woolsey ===
{{main|Richard Woolsey}}
[[Image:Robert Picardo Comic Con 2008.jpg|thumb|right|200px|Picardo at ComicCon, 2008.]]
'''Richard Woolsey''' (played by [[Robert Picardo]], seasons 7, 9–10) – Woolsey's first appearance is following the death of Dr. [[Janet Fraiser]] late in season 7 of ''Stargate SG-1'', Woolsey is brought into [[Stargate Command]] in the episode "[[Heroes (Stargate SG-1)|Heroes]]" to examine the command decisions and threatens SGC personnel with [[courts-martial|court-martial]] if they do not cooperate.<ref name="heroes"/> When Woolsey brings his report to [[Henry Hayes (Stargate)|President Hayes]] in "[[Inauguration (Stargate SG-1)|Inauguration]]", he comes to realize [[Senator Kinsey]]'s ambitions and presents incriminating evidence against him,<ref name="inauguration">{{cite episode| episodelink=Inauguration (Stargate SG-1)| title=Inauguration| series= Stargate SG-1| serieslink=Stargate SG-1 | credits = [[Peter F. Woeste]] (director); [[Joseph Mallozzi]] & [[Paul Mullie]] (writers) | network = [[Sky1]] | season = 7 | number = 20 }}</ref> indirectly forcing Kinsey into resigning. Woolsey returns in the season 9 episode "[[Prototype (Stargate SG-1)|Prototype]]" and encourages the SGC to take great risks with the captured Goa'uld-human-Ancient hybrid [[Khalek]] to learn more about the [[Ascension (Stargate)|Ascension]] process. When the studies cause injury and death among SGC personnel, Woolsey acknowledges his own error and pleads for forgiveness from the SG-1 team.<ref>{{cite episode| episodelink=Prototype (Stargate SG-1)| title=Prototype| series= Stargate SG-1| serieslink=Stargate SG-1 | credits = [[Peter DeLuise]] (director); [[Alan McCullough (writer)|Alan McCullough]] (writer) | network = [[Sci Fi Channel (United States)|Sci Fi Channel]] | season = 9 | number = 9 }}</ref> Being the US's representative on the newly formed [[International Oversight Advisory (Stargate)|International Oversight Advisory]] Committee (IOA), Woolsey and some colleagues are rescued by SG-1 and the crew of the ''[[Odyssey (Stargate)|Odyssey]]'' after a catastrophe at the Gamma Site in "[[The Scourge (Stargate SG-1)|The Scourge]]", which he later considers an "eye-opening experience".<ref>{{cite episode| episodelink=The Scourge (Stargate SG-1)| title=The Scourge| series= Stargate SG-1| serieslink=Stargate SG-1 | credits = [[Ken Girotti]] (director); [[Joseph Mallozzi]] and [[Paul Mullie]] (writers) | network = [[Sky1]] | season = 9 | number = 17 }}</ref> Woolsey makes two more appearances in "[[Flesh and Blood (Stargate SG-1)|Flesh and Blood]]" and "[[Morpheus (Stargate SG-1)|Morpheus]]" and last appears on ''SG-1'' in season 10's "[[The Shroud (Stargate SG-1)|The Shroud]]". Woolsey remembers the Khalek incident and decides that Daniel, who transformed into a [[Prior (Stargate)|Prior]], is too dangerous and must be placed indefinitely into stasis. However, Daniel frees himself before Woolsey's plans can be enacted.<ref>{{cite episode| episodelink=The Shroud (Stargate SG-1)| title=The Shroud| series= Stargate SG-1| serieslink=Stargate SG-1 | credits = [[Andy Mikita]] (director); [[Robert C. Cooper]] and [[Brad Wright]] (writers) | network = [[Sky1]] | season = 10 | number = 14 }}</ref>
[[Robert Picardo]] was in the main cast of ''[[Star Trek: Voyager]]'' from 1995 to 2001. He was familiar with ''Stargate SG-1'' from his time as a [[Showtime (TV network)|Showtime]] subscriber. He was offered a one-day guest star as Richard Woolsey for the ''SG-1'' episode "[[Heroes (Stargate SG-1)|Heroes]]" in season seven (2004) while he was working on ''[[The Outer Limits (1995 TV series)|The Outer Limits]]'' in [[Vancouver]] (where ''Stargate SG-1'' is filmed). He was then brought back for the follow-up episode "[[Inauguration (Stargate SG-1)|Inauguration]]", which began the rehabilitation of the Woolsey character. With the story introduction of the [[IOA (Stargate)|IOA]], the Woolsey character made more regular appearances to "annoy people". Eventually, humor was added to the role, and the character was spun over to ''Atlantis'' as a recurring guest character. Picardo later became a [[main character]] in ''[[Stargate Atlantis]]''.<ref name="bravenewwoosley">{{cite web |first=Darren |last=Sumner |url=http://www.gateworld.net/interviews/brave_new_woolsey.shtml |title=Brave New Woosley |publisher=[[GateWorld]] |accessdate=April 6, 2009 |url-status=dead |archiveurl=https://web.archive.org/web/20090331233247/http://www.gateworld.net/interviews/brave_new_woolsey.shtml |archivedate=March 31, 2009 }}</ref><ref name=jm_080926>{{cite web | first=Joseph | last = Mallozzi | url=http://josephmallozzi.wordpress.com/2008/09/26/september-26-2008-robert-picardo-answers-your-questions/ | title=September 26, 2008 Robert Picardo Answears Your Questions | publisher=josephmallozzi.wordpress.com | date=September 28, 2008 | accessdate=June 18, 2009 }}</ref>
Producer Joseph Mallozzi said that "whenever I do interviews, I often draw parallels between [Amanda Tapping and Robert Picardo]. They are both incredibly kind, professional, delightful to work with, and gifted actors who always elevate the performances of anyone they share a scene with."<ref name=jm_080926 />
=== Frank Simmons ===
{{anchor|Colonel Simmons}} '''Colonel Frank Simmons''', (played by [[John de Lancie]], seasons 5–6) – The [[NID (Stargate)|NID]] liaison to Stargate Command after Col. [[Harry Maybourne]]'s arrest for treason. Simmons is introduced in season 5's "[[Ascension (Stargate SG-1)|Ascension]]" and is notorious for claiming to have the best interest of the nation at heart, while really he has his own political agenda. In "[[Desperate Measures (Stargate SG-1)|Desperate Measures]]", Simmons shoots O'Neill in the back while O'Neill was attempting to capture a [[Goa'uld]] who has taken [[Adrian Conrad]] as host. "[[48 Hours (Stargate SG-1)|48 Hours]]" Simmons' involvement in the disappearance of the Adrian Conrad Goa'uld, whom he now holds captive, is revealed and General Hammond has him arrested. In season 6's "[[Prometheus (Stargate SG-1)|Prometheus]]", rogue NID agents hijack the unfinished starship ''[[Prometheus (Stargate)|Prometheus]]'' and demand that Simmons, along with Adrian Conrad's Goa'uld, be released. It later turns out that Simmons had orchestrated the entire affair. When Conrad is killed, the Goa'uld infects Simmons. O'Neill is able to open an emergency airlock and releases Simmons into hard vacuum, killing both him and the Goa'uld.
==Other recurring characters==
=== Chekov ===
{{anchor|Colonel Chekov|Colonel Chekov (Stargate)|Chekov (Stargate)}} [[Colonel (Russia)|Colonel]] '''Chekov''', (played by [[Garry Chalk (actor)|Garry Chalk]], seasons 5–6, 8–10) – [[Russia]]'s liaison to [[Stargate Command]] following the early season 4 events of the short-lived Russian Stargate program. He first appears in season 5's "[[The Tomb (Stargate SG-1)|The Tomb]]", blaming SG-1 for the death of several Russian SG team members.<ref name="thetomb">{{cite episode| episodelink=The Tomb (Stargate SG-1) | title=The Tomb | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[Peter DeLuise]] (director); [[Joseph Mallozzi]] and [[Paul Mullie]] (writers) | network = [[Showtime (TV network)|Showtime]] | season = 5 | number = 8}}</ref> Chekov collaborates with the SGC several episodes later in "[[48 Hours (Stargate SG-1)|48 Hours]]", giving them a [[Dial-Home Device|DHD]] from Russian possession and allowing the SGC to use the Russian Stargate.<ref name="hours"/> Colonel Chekov is appointed as the Russian envoy to the SGC around season 6's "[[Redemption (Stargate SG-1)|Redemption]]" and agrees to give the Russian Stargate to the US in exchange for money, [[X-302]] technology, and a Russian SG team.<ref name="redemption">{{cite episode| episodelink=Redemption (Stargate SG-1) | title=Redemption | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[Martin Wood (director)|Martin Wood]] (director); [[Robert C. Cooper]] (writer) | network = [[Sci Fi Channel (United States)|Sci Fi Channel]] | season = 6 | number = 1 & 2}}</ref> In season 6's "[[Disclosure (Stargate SG-1)|Disclosure]]", Colonel Chekov supports the US's presentation for the disclosure of the Stargate Program to the other three permanent members of the UN Security Council.<ref name="disclosure">{{cite episode| episodelink=Disclosure (Stargate SG-1) | title=Disclosure | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = William Gereghty (director); [[Joseph Mallozzi]] and [[Paul Mullie]] (writers) | network = [[Sky1]] | season = 6 | number = 13}}</ref> In season 8's "[[Full Alert (Stargate SG-1)|Full Alert]]", Colonel Chekov helps General O'Neill deal with the possible [[Goa'uld]] compromise of the US government and establishes a direct line between O'Neill and the Russian President to avert a nuclear war.<ref name="fullalert">{{cite episode| episodelink=Full Alert (Stargate SG-1) | title=Full Alert | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[Andy Mikita]] (director); [[Joseph Mallozzi]] and [[Paul Mullie]] (writers) | network = [[Sky1]] | season = 8 | number = 14}}</ref> Chekov appears in season 9's "[[The Fourth Horseman (Stargate SG-1)|The Fourth Horseman]]" and "[[Crusade (Stargate SG-1)|Crusade]]", where he has become a Russian representative of the [[IOA (Stargate)|IOA]].<ref name="thefourthhorseman">{{cite episode| episodelink=The Fourth Horseman (Stargate SG-1) | title=The Fourth Horseman | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[Andy Mikita]] (director); [[Damian Kindler]] (writer) | network = [[Sci Fi Channel (United States)|Sci Fi Channel]] | season = 9 | number = 10}}</ref><ref name="crusade">{{cite episode| episodelink=Crusade (Stargate SG-1) | title=Crusade | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[Robert C. Cooper]] (director); [[Robert C. Cooper]] (writer) | network = [[Sci Fi Channel (United States)|Sci Fi Channel]] | season = 9 | number = 19}}</ref> He makes his last appearance in "[[Camelot (Stargate SG-1)|Camelot]]" as the commander of the Earth ship ''[[Korolev (Stargate)|Korolev]]'' to stop the [[Ori (Stargate)|Ori]] fleet from invading the [[Milky Way]], but is killed when his ship was obliterated by the Ori Fleet, though six other crew members were transported from the ship before its destruction.<ref name="camelot">{{cite episode| episodelink=Camelot (Stargate SG-1) | title=Camelot | series= Stargate SG-1| serieslink=Stargate SG-1 |credits = [[Martin Wood (director)|Martin Wood]] (director); [[Joseph Mallozzi]] and [[Paul Mullie]] (writers) | network = [[Sci Fi Channel (United States)|Sci Fi Channel]] | season = 9 | number = 20}}</ref>
Garry Chalk was assigned to the role as Chekov by [[executive producer]] Michael Greenberg and N. John Smith. They asked him if he could speak [[Russian language|Russian]], Chalk replied "No." Greenberg then replied "No matter!" And gave him his own Russian coach named Alexander Kalugin, who made an appearance in the ''Stargate SG-1'' episode "[[Watergate (Stargate SG-1)|Watergate]]" as one of the Russian soldiers. Portraying actor Chalk had previously worked with [[Richard Dean Anderson]], [[Don S. Davis]] and Greenberg in 1986 on ''[[MacGyver (1985 TV series)|MacGyver]]'' and Smith in ''[[The Beachcombers]]''. Greenberg had said to Chalk that they were going to bring him into the show, at first there was no audition or a single phone call, until season 5 of the series. During the shows history, Chalk "Begged" the producers for his character to go through the "[[Stargate (device)|Stargate]]", but they said no, but, eventually they came up with the idea of giving him his own [[starship]]. Chalk was the only non-Russian actor assigned in "[[Flesh and Blood (Stargate SG-1)|Flesh and Blood]]".<ref name="garychalkinterview">{{cite web |last=|first=|url=http://www.gateworld.net/interviews/adverse_ally.shtml |title=Adverse Ally |publisher=[[GateWorld]] |date=June 2006 |accessdate=18 June 2009}}</ref>
===Jacob Carter===
[[File:Carmen Argenziano - 2012 Sci-Fi Convention Toulouse 271.jpg|thumb|[[Carmen Argenziano]] played [[Samantha Carter]]'s father Jacob and the [[Tok'ra]] Selmak.]]
{{anchor|Jacob Carter}} '''Jacob Carter''', played by [[Carmen Argenziano]] (seasons 2– 8) – A retired United States Air Force Major General and the widowed father of Samantha Carter and Mark Carter. Jacob Carter is introduced in season 2's "[[Secrets (Stargate SG-1)|Secrets]]" as a [[USAF]] general dying of [[cancer]], and after becoming a willing host of a [[Tok'ra]] named '''Selmak''' who would cure his illness ("[[The Tok'ra]]") he frequently recurs as the Tok'ra liaison to Earth. As a member of the Tok'ra High Council, Jacob/Selmak engages in Tok'ra covert operations and provides help to Stargate Command when problems arise. He goes on off-world missions with SG-1, and frequently provides valuable knowledge and expertise, including the ability to use a [[Goa'uld]] healing device. When the Earth-Tok'ra relations deteriorate, Jacob/Selmak remains the strongest link between the allies despite his loss of influence in the Tok'ra High Council. In season 7's "[[Death Knell (Stargate SG-1)|Death Knell]]", Jacob helps his daughter devise the [[Kull Disruptor]] as an invaluable weapon in fighting the army of [[Kull Warrior]]s of [[Anubis (Stargate)|Anubis]]'s creation. He also plays a key role in retuning the [[Dakara Superweapon]] to the right pattern to attack the [[Replicator (Stargate)|Replicators]] in season 8's "[[Reckoning (Stargate SG-1)|Reckoning]]", but Selmak dies of old age one episode later in "[[Threads (Stargate SG-1)|Threads]]", along with Jacob who wouldn't let go of him a few weeks earlier knowing by keeping Selmak alive he would help in the fight against the replicators but would ultimately die with Selmak due to release of a poison when a Symbiote dies. Selmak fell into a coma shortly after the Dakara Superweapon was activated thus preventing him from saving Jacob.
=== Earth ship crew characters===
{{see also|Earth starships in Stargate}}
* '''Catherine Womack''', played by [[Chelah Horsdal]] (seasons 8–9) – A US Airforce officer of unknown rank. She takes over from Major Erin Gant as the helmsman of the ''Prometheus'' in season 8's in "[[New Order (Stargate SG-1)|New Order, Part 2]]" and is last seen in "Full Alert".
* {{anchor|Paul Emerson}}'''Paul Emerson''', played by [[Matthew Glave]] (seasons 9–10) – Introduced as the commander of the ''[[Odyssey (Stargate)|Odyssey]]'' in season 9's "[[Off the Grid (Stargate SG-1)|Off the Grid]]", rescuing SG-1 and aiding in their mission to take back all stolen Stargates from Ba'al's ship. In the next episode, "[[The Scourge (Stargate SG-1)|The Scourge]]", he again rescues SG-1 and a team of the [[International Oversight Advisory (Stargate)|IOA]] from the Gamma Site. In the season 9 finale, "[[Camelot (Stargate SG-1)|Camelot]]", Emerson teams up the ''Odyssey'' with many other ships of the [[Jaffa (Stargate)|Jaffa]], the Asgard and the [[Lucian Alliance]] to battle the [[Ori battlecruiser]]s which come through an open [[Supergate]], and the ''Odyssey'' takes much damage. Emerson continues serving as the commander of the Odyssey in season 10 but is killed by a member of the [[Lucian Alliance]] in "[[Company of Thieves (Stargate SG-1)|Company of Thieves]]".
* '''Erin Gant''', played by [[Ingrid Kavelaars]] (seasons 6–7) A US airforce Major and the first known helmsman of the ''Prometheus'' under Colonels Ronson and Kirkland as well as General George Hammond. She is first seen in "[[Memento (Stargate SG-1)|Memento]]" and last seen in "[[Lost City (Stargate SG-1)|Lost City]]".
* {{anchor|Kevin Marks|Marks}} '''Kevin Marks''', played by Martin Christopher (seasons 9–10) – A USAF officer aboard the ''Prometheus'' introduced in "[[Avalon (Stargate SG-1)|Avalon Part 1]]", helping Mitchell and SG-1 locate and gain access to the Ancient stronghold at Avalon. Marks is also present during the Kalana mission in "[[Beachhead (Stargate SG-1)|Beachhead]]" and the subsequent search for Gerak's hidden mothership in orbit of Earth's moon in "[[Ex Deus Machina]]", after which he is promoted to [[Captain (land and air)|captain]]. Following the destruction of the ''Prometheus'' in "[[Ethon (Stargate SG-1)|Ethon]]", Marks is promoted to [[major]] and becomes a bridge officer on board the ''Odyssey'', where he participates in various operations in "[[Camelot (Stargate SG-1)|Camelot]]", "[[The Scourge (Stargate SG-1)|The Scourge]], "[[Flesh and Blood (Stargate SG-1)|Flesh and Blood]]", "[[Talion (Stargate SG-1)|Talion]]", and "[[Unending]]". Marks' last apparent ''SG-1'' mission on board the ''Odyssey'' is the retrieval of the Ark of Truth from the Ori Home Galaxy in ''[[Stargate: The Ark of Truth]]''. He takes a similar bridge position on board the ''Apollo'' in ''Atlantis''<nowiki>'s</nowiki> "[[Be All My Sins Remember'd]]" and transfers to ''Daedalus'' in "[[Search and Rescue (Stargate Atlantis)|Search and Rescue]]". He is also last seen on board the [[George Hammond (Ship)|George Hammond]] under the command of [[Samantha Carter]].
* {{anchor|Lionel Pendergast}} '''Lionel Pendergast''', played by [[Barclay Hope]] (seasons 8–9) – Replaces Colonel William Ronson as commander of the ''[[Prometheus (Stargate)|Prometheus]]'' and is first seen in "[[New Order (Stargate SG-1)|New Order Part 2]]" patrolling Earth. Pendergast intercepts [[Thor (Stargate)|Thor's]] Asgard mothership ''Daniel Jackson'' after its arrival in Earth's solar system and destroys a [[The Trust (Stargate)|Trust]]-controlled Al'kesh in "[[Full Alert (Stargate SG-1)|Full Alert]]". He is leading the search of [[Osiris (Stargate)|Osiris]]'s cloaked [[Al'kesh]] in Earth's orbit in "[[Endgame (Stargate SG-1)|Endgame]]" and transports the Stargate and SG-1 aboard before the enemy vessel enters hyperspace. In season 9's "[[Beachhead (Stargate SG-1)|Beachhead]]", Pendergast delivers a Mark IX warhead to an [[Ori (Stargate)|Ori]] beachhead and maintains the ship's position during the mission despite Jaffa and Ori interruption. Pendergast dies during the destruction of the ''Prometheus'' by an Ori satellite weapon in "[[Ethon (Stargate SG-1)|Ethon]]"; he remained aboard to beam his crew off the ship, thus saving 76 lives.
* '''William Ronson''', played by [[John Novak]] (seasons 6–7) – A USAF Colonel and Commander of the ''[[Prometheus (Stargate)|Prometheus]]'' during seasons 6 and 7.
* '''Ian Davidson''' played by [[Fulvio Cecere]] (season 10) A USAF Colonel who takes command of the Odyssey in the Season 10 episodes, "Family Ties" and "Dominion" following the death of his predecessor, Colonel Paul Emerson.
===Minor characters===
* [[Rodney McKay]] (played by [[David Hewlett]]) in "[[48 Hours (Stargate SG-1)|48 Hours]]", "[[Redemption (Stargate SG-1)|Redemption]]" (two-parter), "[[Moebius (Stargate SG-1)|Moebius]]" (two-parter), "[[The Pegasus Project]]", "[[The Road Not Taken (Stargate SG-1)|The Road Not Taken]]"
* {{anchor|Adrian Conrad}} '''Adrian Conrad''', played by [[Bill Marchant]] (seasons 5–6) – A wealthy business man suffering from an incurable terminal illness and desperate to uncover the regenerative biological secrets of [[Goa'uld]] symbiotes. He hopes to learn the effects a blending had on a human by abducting Carter in "[[Desperate Measures (Stargate SG-1)|Desperate Measures]]", but her resistance forces him to be blended with the symbiote himself. Conrad, incarcerated under the control of [[Frank Simmons (Stargate)|Frank Simmons]] of the [[NID (Stargate)|NID]], unknowingly assists in freeing Teal'c from the inner workings of the Stargate in "[[48 Hours (Stargate SG-1)|48 Hours]]". Rogue NID agents are eventually able to release Conrad and Simmons from custody and escape with them aboard the hijacked and unfinished starship ''[[Prometheus (Stargate)|Prometheus]]''. The Goa'uld desires to gain control of the ''Prometheus'' and finds its way into Col. Simmons after Simmons killed Conrad. O'Neill releases the infected Simmons into the vacuum of space through an airlock during a fight.
* [[Elizabeth Weir (Stargate)|Elizabeth Weir]] (played by [[Jessica Steen]] and [[Torri Higginson]]) in "[[Lost City (Stargate SG-1)|Lost City]]" (two-parter), "[[New Order (Stargate SG-1)|New Order]]" (two-parter), "[[The Pegasus Project]]"
* {{anchor|Paul Davis}} [[Image:Colin Cunningham - 2012 Sci-Fi Convention Toulouse 262.jpg|thumb|[[Colin Cunningham]] played Major Paul Davis.]] '''Paul Davis''', played by [[Colin Cunningham]] (seasons 2–6, 8) – A United States Air Force Major stationed at the Pentagon. He is introduced in season 2's "[[A Matter of Time (Stargate SG-1)|A Matter of Time]]" and recurs in fifteen ''Stargate SG-1'' episodes, usually aiding Stargate Command during conflicts with other nations on Earth and other portions of the United States government. He last appears in an alternate timeline in season 8's "[[Moebius (Stargate SG-1)|Moebius]]", and makes a cameo appearance at the beginning of ''[[Stargate: Continuum]]''. He also appeared in the ''[[Stargate Atlantis]]'' series finale, "[[Enemy at the Gate (Stargate Atlantis)|Enemy at the Gate]]".
* [[Richard Woolsey]] (played by [[Robert Picardo]]) in "[[Heroes (Stargate SG-1)|Heroes (Part 2)]]", "[[Inauguration (Stargate SG-1)|Inauguration]]", "[[Prototype (Stargate SG-1)|Prototype]]", "[[The Scourge (Stargate SG-1)|The Scourge]]", "[[Flesh and Blood (Stargate SG-1)|Flesh and Blood]]", "[[Morpheus (Stargate SG-1)|Morpheus]]", [[The Shroud (Stargate SG-1)|The Shroud]]"
* '''Julia Donovan''', played by [[Kendall Cross (actress)|Kendall Cross]] (seasons 6, 8–10) – A TV reporter who learns of the ''[[Prometheus (Stargate)|Prometheus]]'' program in season 6's "[[Prometheus (Stargate SG-1)|Prometheus]]" and intends to do a story on it. When she gets caught up in a rogue NID operation during her tour of the ship, she changes her mind in promised to be the first one to publish the story if and when the Stargate Program goes public. She helps cover up Stargate-related issues in season 8's "[[Covenant (Stargate SG-1)|Covenant]]" and season 9's "[[Ex Deus Machina (Stargate SG-1)|Ex Deus Machina]]", and appears in an alternate universe in season 10's "[[The Road Not Taken (Stargate SG-1)|The Road Not Taken]]".
* [[John Sheppard (Stargate)|John Sheppard]] (played by [[Joe Flanigan]]) in "[[The Pegasus Project]]"
* {{anchor|Henry Hayes}} '''Henry Hayes''', played by [[William Devane]] (season 7) – The [[President of the United States]] from season 7 onwards, introduced in season 7's "[[Inauguration (Stargate SG-1)|Inauguration]]". After Vice President [[Robert Kinsey]] and [[NID (Stargate)|NID]]-agent [[Richard Woolsey]] inform him about the Stargate Program and several problems at Stargate Command, Hayes replaces General Hammond with civilian Dr. [[Elizabeth Weir (Stargate)|Elizabeth Weir]] as the new commander of Stargate Command in "[[Lost City (Stargate SG-1)|Lost City]]". Hayes then appoints Hammond to command of the ''[[Prometheus (Stargate)|Prometheus]]'' during [[Anubis (Stargate)|Anubis]]'s actual invasion on Earth and forces Kinsey into resigning. After Anubis's defeat, Hayes puts O'Neill in command of the SGC and selects Dr. Elizabeth Weir as the leader of the [[Atlantis (Stargate)|Atlantis expedition]]. His first official visit to the SGC is alluded to in season 8's "[[Zero Hour (Stargate SG-1)|Zero Hour]]", and he is mentioned again in season 10's "[[Bad Guys (Stargate SG-1)|Bad Guys]]". President Hayes returns in an alternate timeline in ''[[Stargate: Continuum]]''.
* [[Evan Lorne]] (played by [[Kavan Smith]]) in "[[Enemy Mine (Stargate SG-1)|Enemy Mine]]" and "[[The Road Not Taken (Stargate SG-1)|The Road Not Taken]]"
* {{anchor|Catherine Langford}}{{Distinguish|Katherine Langford}} '''Catherine Langford''', played by [[Kelly Vint]] (girl in the film), [[Viveca Lindfors]] (elderly lady in the film), [[Elizabeth Hoffman (actress)|Elizabeth Hoffman]] (elderly lady in season 1), [[Nancy McClure]] (young woman in season 1) and [[Glynis Davies]] (middle-aged woman in season 2), [[Ellie Gall]] ([[Stargate Origins]]) – Daughter of archeologist Prof. Paul Langford who discovered the Stargate, as a girl she acquired an amulet depicting the [[Eye of Ra]] during the excavation of the Stargate in Giza in 1928.<ref>{{cite web|url=https://www.stargatecommand.co/feeds/stargate-origins-full-trailer|title= Stargate Origins - Full Trailer |publisher=Stargate Command|accessdate=February 1, 2018}}</ref> In present-day of ''[[Stargate (film)|Stargate]]'', she gives the amulet to Daniel before his first mission through the Stargate to Abydos. Her fiancé, a scientist named Ernest Littlefield (played by [[Keene Curtis]] and [[Paul McGillion]]), is the first human to have travelled through the Stargate since the Ancient Egyptians buried it. Catherine and Ernest were separated by a gate incident in 1945 and were re-united in the mid-season 1 episode "[[The Torment of Tantalus (Stargate SG-1)|The Torment of Tantalus]]", but Ernest is never seen again in the series (although he is mentioned in season 1s "[[There But For the Grace of God (Stargate SG-1)|There But For the Grace of God]]" and season 2's "[[The Fifth Race]]"). Catherine Langford appears again in alternate universes and times in "[[There But For the Grace of God (Stargate SG-1)|There But For the Grace of God]]" and "[[1969 (Stargate SG-1)|1969]]". Her death is announced in season 8's "[[Moebius (Stargate SG-1)|Moebius, Part 1]]"; she leaves her personal collection of documents and artifacts, including the golden medallion of Ra, to Daniel Jackson.
* [[Radek Zelenka]] (played by [[David Nykl]]) in "[[The Pegasus Project]]"
* '''[[Rodney McKay]]''', played by [[David Hewlett]] (seasons 5–6, 8–10) – A brilliant scientist who works with Samantha Carter in "[[48 Hours (Stargate SG-1)|48 Hours]]", "[[Redemption (Stargate SG-1)|Redemption]]" (two-parter), "[[Moebius (Stargate SG-1)|Moebius]]" (two-parter), "[[The Pegasus Project]]", "[[The Road Not Taken (Stargate SG-1)|The Road Not Taken]]". Rodney McKay went on to become a main character on the spinoff series, Stargate Atlantis.
* [[List of Stargate Atlantis characters#Recurring scientist characters|Lindsey Novak]] (played by [[Ellie Harvie]]) in "[[Prometheus Unbound (Stargate SG-1)|Prometheus Unbound]]"
* {{anchor|Robert Samuels}} '''Robert Samuels''', played by [[Robert Wisden]] (seasons 1–2, 8) – A USAF Lieutenant Colonel who re-introduces O'Neill to the Stargate Program in "[[Children of the Gods]]". He repeatedly raises his concerns over the SGC's and Hammond's incompetence in "[[Politics]]" and "[[The Serpent's Lair]]". Samuels last appears in an alternate universe in season 8's "[[Moebius (Stargate SG-1)|Moebius (Part 1)]]".
* [[Abe Ellis]] (played by [[Michael Beach]]) in ''[[Stargate: The Ark of Truth]]''
* {{anchor|Pete Shanahan}} '''Pete Shanahan''', played by [[David DeLuise]] (seasons 7–8) – A police [[detective]] working in [[Denver, Colorado]]. He meets Carter and develops a romantic relationship with her in the late-season-7 episode "[[Chimera (Stargate SG-1)|Chimera]]" after Carter's brother set them up. He is [[divorce]]d since his previous wife could not quite cope with his work. Curious about Carter's work, he finds out about Carter's involvement with a top-secret project through an [[Federal Bureau of Investigation|FBI]] acquaintance. After witnessing a fight between SG-1 and [[Osiris (Stargate)|Osiris]], he is given security clearance and learns the true nature of the Stargate program. Carter and Shanahan continue to see each other throughout season 7 and 8 until Shanahan proposes to marry Carter in "[[Affinity (Stargate SG-1)|Affinity]]". She agrees, but she cancels the wedding and breaks up with him in "[[Threads (Stargate SG-1)|Threads]]" after he had already made wedding arrangements and was ready to buy a house.
* '''General Maurice Vidrine''', played by [[Steven Williams]] (seasons 4, 7) <!-- (3 episodes, 2000-2003) --> A USAF General who oversaw the development and operations of Earth's fleet of spacecraft built using alien technology, including the X-301 and BC-303.
Spanning ten years and several films, Stargate SG-1 developed an extensive and detailed backdrop of diverse characters. Many of the characters are members of alien species discovered while exploring the galaxy through the Stargate, although there are an equal number of characters from offworld human civilizations. While Stargate SG-1, Stargate Atlantis and Stargate Universe are separate shows, they take part in the same fictional universe, so no character is internally show-specific.
Main characters
Except for the commanders of the top-secret Stargate Command military base (SGC), all main characters of Stargate SG-1 are members of the SG-1 team, the primary unit of the SGC in the show. SG-1's duties include first contact, reconnaissance and combat, diplomacy, initial archaeological surveying, and technological assessment. The composition of SG-1 changes several times during the series run and varies in several alternative universes.[1]
Jack O'Neill is a USAF colonel (later brigadier general, major general and then lieutenant general) who led the original mission through the Stargate in Stargate. He is played by Kurt Russell in the film, and by former MacGyver actor Richard Dean Anderson in a regular role in seasons 1–8, and in a recurring role in seasons 9–10, also Michael Welch played young Colonel O'Neill in episode "Fragile Balance". He also appears in Stargate: Continuum, and in seasons 1 and 3 of Stargate Atlantis. Colonel O'Neill is the leader of the SG-1 team in the first seven seasons, and takes charge of Stargate Command after his promotion to brigadier general at the beginning of season 8. He is promoted to major general at the beginning of season 9, and is reassigned to Washington, D.C., then makes sporadic appearances in the final episodes of season one of Stargate Universe.
Dr. Daniel Jackson is a brilliant archaeologist and linguist, specializing in Egyptology, whose unusual theories concerning the origin of the Egyptian Pyramids led to his participation in the original mission through the stargate in Stargate. He is played by James Spader in the film and by Michael Shanks in a regular role in seasons 1–5 and 7–10, with a recurring role in season 6. He also appears in both direct-to-DVD films and in seasons 1 and 5 of Stargate Atlantis. Daniel joins the SG-1 team in search of his kidnapped wife (Sha're), until she dies in season 3. However, he decides to remain a part of SG-1, and does so until his ascension at the end of season 5. Following his decision to retake human form, he rejoins SG-1 at the beginning of season 7.
As of the season 2 episode "1969", Daniel speaks 23 languages, including Russian, German, Spanish, and Egyptian. Throughout the run of the series, he becomes Earth's foremost expert on the Ancients, and also learns many alien languages, such as Goa'uld, Ancient, and Unas.
Samantha "Sam" Carter is an astrophysicist and USAF captain (later major, lieutenant colonel, colonel, then brigadier general). She is played by Amanda Tapping in a regular role in seasons 1–10, in both direct-to-DVD films and makes an appearance in all seasons of Stargate Atlantis. Captain Carter joins SG-1 under the command of Col. O'Neill in season 1. Following her promotion to major in season 3, she is promoted to lieutenant colonel in early season 8 and assumes command of SG-1. She assists Lt. Col. Cameron Mitchell in seasons 9 and 10. After her appearance in Stargate: The Ark of Truth, she is promoted to a "full bird" colonel and becomes the new commander of the Atlantis expedition in season 4 of Stargate Atlantis before joining SG-1 again for Stargate: Continuum. She is later made the commander of the USS George Hammond, a Daedalus-class Earth ship named after former SGC commander General Hammond, who died in correlation with the actor who played him, Don S. Davis.
Teal'c/ˈtiːəlk/ is a Jaffa from the planet Chulak. He is played by Christopher Judge in a regular role in seasons 1–10, in both direct-to-DVD films and in season 4 of Stargate Atlantis. Throughout the entire run of Stargate SG-1, the only episode that the character was absent was Season 8's "Prometheus Unbound. Teal'c states that he is 101 years old in season 4's "The Light", and ages an additional 50 years in season 10's "Unending". His catchphrase is "Indeed". Teal'c's most notable feature is a golden tattoo on his forehead, a sign that he once served the Goa'uld Apophis as First Prime, the highest Jaffa rank. His interaction with Bra'tac (Apophis' former First Prime) and his own personal experiences led him to doubt the divinity of the Goa'uld.[2]
Teal'c defects from Apophis in the pilot episode and joins the SG-1 team, believing this to be an opportunity to eventually defeat the Goa'uld and bring freedom to all Jaffa.[3] He leaves his wife Drey'auc and his son Rya'c behind on Chulak. After succeeding in killing Apophis in season 5's "Enemies", Teal'c and Bra'tac make first progress in uniting a sizable group of Jaffa resistance warriors in season 5's "The Warrior". Teal'c and Bra'tac lose their symbiotes after a sabotaged rebel Jaffa summit in season 6's "The Changeling", but the Tok'ra drug Tretonin can sustain them and eventually becomes instrumental in liberating Jaffa from physiological reliance on Goa'uld symbiotes,. Teal'c and Bra'tac eventually lead the Jaffa to victory over the Goa'uld in season 8's "Reckoning"/"Threads". Teal'c is chosen as a member of the new Jaffa High Council and supports Bra'tac as an interim leader in season 9's "The Fourth Horseman" before a type of government is solidified.
George S. Hammond is a USAF Major General (later Lieutenant General) who commands Stargate Command in the first seven seasons. He is played by Don S. Davis in a regular role in seasons 1–7 and in a recurring role afterwards. He also appears in Stargate: Continuum and season 1 of Stargate Atlantis. Hammond took over from Major General West, commander of the Stargate Project in the original Stargate film, and originally intended the Stargate Program to be his last assignment before retirement.[3] General Hammond worked at the Cheyenne Mountain complex (the present-day location of Stargate Command) in 1969.[4] Hammond originates from Texas[5] and became a widower when his wife died of cancer. He has two grandchildren, Kayla and Tessa.[6]
Hammond briefly retires under duress in season 4's "Chain Reaction"[6] and is promoted to the rank of lieutenant general at the beginning of season 8, being placed in command of the new Homeworld Security command, a department in control of Stargate Command, the Prometheus project, and the Atlantian Antarctica outpost. Hammond recurs in the season 1 of Stargate Atlantis and seasons 8 through 10 of Stargate SG-1. Hammond appears in a civilian suit instead of a military uniform in season 9's "The Fourth Horseman", and Carter confirms his retired status in season 10's "The Road Not Taken". In his last appearance in the alternate timeline film Stargate: Continuum, Hammond acts as a military advisor to President Henry Hayes.
Don S. Davis knew Richard Dean Anderson (O'Neill) from Anderson's starring role in MacGyver, in which Davis was a stand-in for Dana Elcar (playing Pete Thornton, MacGyver's boss) before making several guest appearances. Davis died from a heart attack at the age of 65 on June 29, 2008, shortly before the release of Continuum, making this his final on-screen appearance as General Hammond.[7] For his portrayal of Hammond, Don S. Davis was nominated for a 2004 Leo Award in the category "Dramatic Series: Best Supporting Performance by a Male" for the season 7 episode "Heroes, Part 2".[8]
Jonas Quinn is an alien from the planet Langara. He is played by former Parker Lewis Can't Lose actor Corin Nemec in a regular role in season 6, and in a recurring capacity in seasons 5 and 7. Jonas leaves his home planet Langara the penultimate season 5 episode "Meridian" after witnessing Daniel Jackson's lethal sacrifice and the following gleeful reaction of his planet's leaders. He is a fast learner and fills Daniel's empty spot on SG-1 in season 6. Following Daniel's return at the beginning of season 7, Jonas returns to his planet and last appears in the mid-season 7 episode "Fallout".
Corin Nemec replaced Michael Shanks (Daniel Jackson) during season 6 after Shanks had left the show amid controversy after season 5.[9] The producers based Jonas's motivation to join SG-1 on his momentary reluctance to actively prevent Daniel's death and his feelings of responsibility afterwards.[10] Jonas was slowly integrated into the story in a prolonged transition stage over the first half of season 6.[11][12] Nemec was open to continue playing Jonas Quinn after season 6, but a new contract was reached with Michael Shanks for Daniel to return in season 7.[11] The role of Jonas was reduced to recurring status in season 7.
Cameron "Cam" Mitchell is a USAF lieutenant colonel. He is played by former Farscape actor Ben Browder in a regular role in seasons 9–10 and in both direct-to-DVD films. Mitchell is introduced in "Avalon" as the leader of a squadron of F-302s against the forces of the arch villain Anubis in season 7's "Lost City". Assigned as the new commanding officer of SG-1 at the beginning of season 9, Mitchell struggles to reunite the team's former members under his command. Assisted by Carter (who is of equal rank), he remains in command of SG-1 throughout the series run and both films. He is promoted to the rank of full-bird Colonel in Stargate: Continuum.
Ben Browder joined the cast after Richard Dean Anderson's departure from Stargate SG-1 in 2005. From the beginning, producer Robert C. Cooper wanted Mitchell to be a "super fan" of SG-1 who is openly enthusiastic about exploring the galaxy.[13][14] Mitchell is often at the center of the action and fight sequences.[15] The producers did not realize the physical resemblance between Browder and Michael Shanks when Browder was cast, and employed make-up and costuming techniques to make the transition easier for the audience.[16] The writers' decision to put Mitchell in command of SG-1 instead of Carter was met with resistance by some critics and audience members.[17][18] For his portrayal of Cameron Mitchell, Ben Browder was nominated for a Saturn Award in the category "Best Supporting Actor on Television" in 2006.[19]
Henry[20] "Hank" Landry is a United States Air Force Major General and the commander of Stargate Command from season 9 onwards. He is played by Beau Bridges in a regular role in seasons 9–10, in both direct-to-DVD films, and in the Stargate Atlantis episodes "The Intruder", "Critical Mass", "No Man's Land", and the two-part episode "The Return" of seasons 2 and 3. General Landry is introduced in SG-1's season 9 premiere, "Avalon", having been hand-picked by Jack O'Neill to succeed him.[21] Landry once served as a pilot in the Vietnam War[22] and met a Vietnamese woman named Kim Lam.[23] They had a child, Carolyn Lam, but Landry became estranged to them and left them due to his involvement in military intelligence.[24] Carolyn Lam grew up to be a doctor and was assigned to Stargate Command as chief medical officer in seasons 9 and 10. Bridges said that "Landry truly loves his work [but] respects and appreciates his daughter. He wants a real relationship with her and hopes that will happen some day. At the start of [season 9], you're not sure what their relationship is."[24] The late season 10 episode "Family Ties" brings some conclusion to the Landry-Lam enstrangement, showing a reunification between Landry, Carolyn and Kim Lam in a restaurant.
TV Zone's Steven Eramo described Landry as "fair, intelligent, even-tempered and having a good sense of humour".[25] Bridges thought that "[Landry] likes to empower his team. He realizes how challenged they are. It's a huge burden to protect their country from the entire galaxy, but he also recognizes that, like himself, they are human beings. [...] Sometimes he does that with a bark, and sometimes with a bite, but he also has a sense of humor, this man. And he likes to fool with people."[26] According to Bridges, Landry appreciates Carter's knowledge, and needed some patience with the fast-speaking Daniel Jackson to realize "how important a piece of puzzle" he is. He respects Teal'c as a warrior, and is willing to foster the potential he sees in Vala.[25]
The Stargate producers approached Beau Bridges, a self-claimed fan of science fiction,[26] directly to play the role of Hank Landry.[24] Although the producers had some ideas for the characters, they collaborated with Bridges to develop the character's backstory before the writing of season 9 began.[26] Bridges wanted the character to be three-dimensional by revealing a layered backstory over the course of the show.[27] Bridges researched famous US generals from George Washington to John P. Jumper to get a feeling for the role.[24] He accumulated quotes by generals that Landry would respect, and gave the list to producer Robert C. Cooper, who in turn used it as free research.[27] Bridges made no deliberate effort to distinguish his character from General O'Neill, believing that the character could stand on his own.[26]
Vala Mal Doran is a sexy con artist from an unnamed planet and a former human host to the Goa'uld Qetesh. She is played by former Farscape actress Claudia Black in a regular role in season 10 after having recurred in seasons 8 and 9 of SG-1. Her first appearance in season 8's "Prometheus Unbound" is followed by a recurring role in season 9, where she and Daniel unintentionally set off the new Ori threat. She joins SG-1 after giving birth to the new leader of the Ori at the beginning of season 10, and appears in both direct-to-DVD films.
Vala was created by Damian Kindler and Robert C. Cooper as a one-time character, but because of the on-screen chemistry between Black's Vala and Shanks' character Daniel Jackson, and the character's popularity with the producers and the audience, Claudia Black became a recurring guest star in season 9 and joined the main cast in season 10. For her portrayal of Vala, Claudia Black was nominated for a 2006 Saturn Award in the category "Best Supporting Actress on Television",[19] and won a Constellation Award in the category "Best Female Performance in a 2006 Science Fiction Television" in 2007.[28]
Recurring Stargate Command personnel
The Stargate Command (SGC) is a fictional military base at the (real) Cheyenne Mountain complex near Colorado Springs, Colorado. It is the main setting in Stargate SG-1 and occasionally features on Stargate Atlantis. The base extends many levels beneath the ground and is protected from most forms of attack including indirect nuclear detonations, also serving to contain biological, chemical or alien hazards to the outside world by means of a 'lockdown' status. Stargate Command is typically commanded by a General and is staffed by subject matter experts and military support personnel, several elite special operations teams, and several SG teams, including SG-1. The majority of the teams are United States Air Force with some United States Marine Corps, civilians and United States Army, but other nations have SG teams operating from the SGC as well after the events of season 5.
Janet Fraiser
Doctor Janet Fraiser as portrayed by Teryl Rothery in Stargate SG-1
Captain/Major Janet Fraiser, the resident Chief Medical Officer of the SGC (played by Teryl Rothery, seasons 1–7, 9) – She is responsible for maintaining the health of the SG teams, as well as the SGC's support staff and base personnel. On many occasions, she also cares for the health of alien refugees to Earth, including Goa'uld symbiotes. In her first appearance in "The Broca Divide", Dr. Fraiser holds the rank of captain, and is promoted to major in Season 3.[29][30] In season 1's "Singularity", Fraiser adopts Cassandra, an alien orphan whose people had been exterminated by the Goa'uld System LordNirrti.[31] Dr. Fraiser is killed by a staffweapon blast in season 7's "Heroes" during an off-world medical emergency,[32] but she returns in season 9's "Ripple Effect" as a parallel universe version of Dr. Fraiser, in her reality a regular member of SG-1. Before Fraiser returns to her reality, Carter, Jackson and Teal'c are able to give her a final goodbye.[33] Dr. Fraiser is also shown alive in an alternate timeline in the year 2010 in season 4's "2010", but Fraiser and SG-1 alter the timeline to prevent a catastrophe on Earth involving the Aschen race.[34]
Fraiser joined the United States Air Force (USAF) after breaking up with her husband; there she got some training with firearms. Her husband didn't want Fraiser to join the US military which is one of the main reasons for their breakup. As a doctor, Fraiser looks for peaceful solutions and is disinclined towards armed solutions. In the episode "Serpent's Song", Fraiser is the only one in Stargate Command (SGC) who is resistant to the idea to give Apophis over to his enemies. She is eventually forced to give up Apophis.[35][36]
Teryl Rothery was asked by then producer and writer (for Stargate) Jonathan Glassner and Brad Wright if she wanted to play the role as Fraiser.[37] In an interview, Rothery was asked what it was like to play a doctor in Stargate SG-1. Rothery replied, "just being true to the character. And as far as the medical stuff, knowing what to do and what to say." She got a lot of help from the medical advisor on the set.
In the first two seasons, Rothery didn't have a contract and was booked on every episode in which she appeared. In season three of SG-1, she finally got a contract deal with the producers. She also commented on her acting life once:[38]
"The life of an actor is always very up and down. So sometimes you work a lot, but sometimes ... So if you're on a series like Stargate SG-1 you have that work for seven years. So that's a gift."
After her character's death in season 7, there were various rumours which said she would appear in the upcoming Stargate film; this never happened. Rothery said it was unlikely since she hadn't had any contact with the Stargate producers since her character's death.[38] Rothery has stated many times that she "admires" the character because of her "strength" and "intelligence".[39]Robert C. Cooper, producer for Stargate SG-1, called Rothery about the death of her character. Cooper said, "It is our last year, so we are thinking of killing one of our regulars."[37] Fraiser was killed off in the episode "Heroes" because the producers thought season seven would be the last in the series and felt that a death of the main cast was needed.[39] Rothery also appeared on the Women of Sci-Fi calendar produced by fellow Stargate cast Michael Shanks and Christopher Judge.[37]
Kevin Elliot
LieutenantKevin Elliot, (played by Courtenay J. Stevens, season 5) – See Martouf – Is transferred to SG-17 after successfully proving his worth in an elaborative test for SGC recruits.[40] All of SG-17 was killed on his first day of off-world duty, except for Elliot, in an attack on the underground Tok'ra by the Goa'uld. Elliot was saved only because of the implantation of the Tok'ra symbiote Lantash.[41] Lantash and Elliot give their lives to save the rest of the team when they realize that Lantash did not have the strength to repair Elliot's injuries and save their lives. Elliot/Lantash were given a vial of Symbiote poison, powerful enough to eliminate the entire occupied force, and, presumably, used it on them to allow SG-1 and Jacob Carter to escape.[42]
According to portraying actor Courtenay J. Stevens, the first draft for the character was that he was supposed to be a young Jack O'Neill in the then new-spin off show Stargate Atlantis. The producers dropped Elliot and minimized his role so that he was never even mentioned in Stargate Atlantis. Many fans of Stargate thought that Elliot and his team would replace Samantha Carter, Teal'c, Daniel Jackson and O'Neill as the main characters of the show. Stevens has stated that the producers took much time to look at new "Options", for the series and further stated that he knew "they were looking at it". But the plans were changed and actor Stevens left the Stargate set in Vancouver after the shooting of "Last Stand".
When shooting the episode, "Summit" J.R. Bourne was booked, so he was replaced with Stevens. Before being cast in the episode "Summit", the producers told the history behind the Tok'ra symbiote Lantash. Stevens was later cast as Keras in the Stargate Atlantis episode "Childhood's End".[43]
Walter Harriman
Gary Jones played Walter Harriman, an SGC technician who was also known as "Norman Davies" and "Chevron Guy"
Chief Master SergeantWalter Harriman (also known as the Chevron Guy among others, portrayed by Gary Jones, seasons 1–10) joined the Stargate Command (SGC) after excelling in navigation and automatic flight control operations during the first Gulf War. General Hammond recruited him as someone with excellent technical ability and a cool head to operate the Stargate under extreme pressure. He specializes in installing, maintaining and repairing bomb navigation, weapons control as well as automatic flight control systems. He is also an expert in radio and navigational equipment, and in maintaining test and precision measurement equipment. He is primarily a Stargate technician, running the dialing computer and other equipment from the Control Room.[44] He also acts as an occasional administrative assistant to the head of Stargate Command, and has manned the flight console on the bridge of the Prometheus.[45] From season 8 to 10, Harriman's role is expanded to advisor to the Head of Command of the SGC.
His name has been a source of confusion for many fans of Stargate SG-1. Originally, he was simply "Technician" or "Sergeant", listed as such in the show credits.[46] At some point, some of the writers gave him the name "Norman Davis", which came with a name tag, but was never used in dialogue. In the episode "2010", Jack O'Neill refers to him as "Walter". Later, in the eighth season of "Stargate SG-1", the character is addressed as "Sergeant Harriman", with "Harriman" actually basing on GeneralGeorge Hammond addressing him as "Airman" what was misheard by fans because of Don S. Davis's Texan accent, resulting in the final name of "Walter Harriman". Many fans fondly refer to him as "the Chevron guy" as many of his on-screen appearances, especially earlier on in the show, had him saying "Chevron (insert number here) encoded".[45] On several DVD commentaries after the introduction of the name "Walter", producer-director Peter DeLuise refers to the character as "Walter Norman" and "Walter Norman Davis". The first time he ever says his own name is in the Stargate Atlantis episode "Home".[47]
As the series continued Harriman got a heavier role in the series. According to Jones, his role was expanded since Richard Dean Anderson wanted him as his personal assistant in the show when his character Jack O'Neill was the leader of the SGC. The Stargate producer and writer staff called 2005, The Year of Walter because the staff evolved Harriman's relationship with GeneralHank Landry.[48] Jones does not have a binding contract with the Stargate producers.[46]
Lieutenant ColonelCharles Kawalsky portrayed by John Diehl (in the film) and Jay Acovone (in the series), was first introduced in the 1994 Stargate, as Jack O'Neill's second in command for the first mission through the stargate. In the film Kawalsky holds the rank of lieutenant colonel in the United States Air Force. He is recruited by General W.O. West to become a member of the first mission through the Stargate. On Abydos under the orders of O'Neill, he takes up the fight against Ra. Kawalsky's relationship with Daniel Jackson worsens throughout the film because Jackson is unable to return them to Earth. He changes his view of Jackson after they defeat Ra. He, O'Neill and Louis Ferretti decide to keep silent about what really happened during their mission to the planet.[49]
When the Goa'uldApophis attacks Stargate Command (SGC), Captain Kawalsky is reunited with his former teammates and questioned by General George Hammond. Both he and Feretti refuse to speak about the mission to Abydos. O'Neill is eventually forced to tell that Daniel Jackson is still alive, and O'Neill, Kawalsky and Ferretti are ordered to bring Jackson back to Earth. Although Kawalsky wore the rank of lieutenant colonel in the Stargate film, Kawalsky is introduced as a captain who is promoted to major, and becomes the leader of the newly formed SG-2, accompanying SG-1 on their mission to Chul'ac to rescue Sha're and Skaara. SG-2 guarded the Stargate and provided cover for SG-1 when they fled from the pursuing Jaffa. Before Kawalsky returns to Earth, he is invaded by a Goa'uld parasite from a dead Jaffa warrior.[44]
Back on Earth the symbiote starts to take control of him, resulting in several blackouts. The medical staff of the SGC try to surgically remove the Goa'uld from his body. Though initially successful, the symbiote turns out to be a dead husk whose intelligence has already taken over Kawalsky's mind. He frees himself and tries to flee from the base, setting off a self-destruct mechanism as he dials the Stargate. He is apprehended by Teal'c while the self-destruct mechanism is disarmed. They fight in front of the open Stargate. Kawalsky is killed when Teal'c forces his head through the event horizon and closes the gate, severing most of Kawalsky's skull including the lobes controlled by the symbiote.[50]
Kawalsky appears in three more episodes of the series in flashback. The first is "The Gamekeeper", in which O'Neill and Teal'c encounter Kawalsky in a virtual reality simulation.[51] In "Point of View", Kawalsky and Samantha Carter from an alternate reality arrive through the gate seeking help in contacting the Asgard.[52] His last appearance is in season 8, in which Kawalsky returns in an alternate timeline accidentally created when the destruction of their time machine traps SG-1 in the distant past. In a partial mirror to the pilot, Kawalsky accompanies O'Neill, Carter and Daniel to Chulak in part two of "Moebius". In this last appearance, he again meets his end, although here he is merely shot; it is the alternate Daniel Jackson who is infected with the Goa'uld and killed by Teal'c.[53]
Darren Sumner called Kawalsky "one of the [1994] film's strongest characters". Sumner called the high death numbers of secondary and recurring characters on the show, The Kawalsky Effect.[54] A Kawalsky action figure was created after the release of the 1994 film.[55] He also has a card in the card game, Stargate TCG. In the card game he is listed as a good soldier.[56] While only appearing in six episodes in total, actor Jay Acovone frequently appears at Stargate conventions.[57]
"Sly" Siler
Master Sergeant"Sly" Siler, (played by Dan Shea, seasons 1–10) – A sergeant at the SGC and one of its primary technicians and engineers. First appearing in season 1's "Solitudes", he remains a background character throughout the run of Stargate SG-1 and also occasionally appears in Earth-based episodes of Stargate Atlantis. Dan Shea is primarily the stunt co-ordinator for Stargate SG-1, responsible for the budgets and locations of stunts, and the hiring of stunt people before co-ordinating all stunt action.[58] He is also a stunt double for Richard Dean Anderson, for whom he stood in and stunt-doubled in MacGyver.[59] Siler is subsequently shown to be involved in many accidents at the SGC, which is parodied in dialogue and action in several SG-1 episodes such as season 4's "Window of Opportunity", season 7's "Heroes" and the milestone episode "200".
Shea first auditioned for the role as Siler with executive producerBrad Wright and director Martin Wood. Shea commented on his first audition that he tried to be "Funny", thinking he could get the role easier that way. Executive producer Michael Greenberg said that Shea "Blew it", Shea then went for a second audition acting more serious, since according to Greenberg the role was "Serious" and he needed to act that way.[59] Siler also frequently appears in the background of scenes carrying an oversized wrench,[58] which he sometimes hands to director Martin Wood as a gag prop in the series. Siler's first name is never mentioned in dialogue in the series, although his uniform patch and magazines give his first name as "Sly" several times,[58][60] and his uniform patch in "Entity" reads "Dan". According to producer and writer Peter DeLuise, Siler's name and dialog deliberately contain the letter "S" because Dan Shea lisps.[61]
Shea had previous worked with both Richard Dean Anderson (who portrayed Jack O'Neill) and Greenberg before on the American television seriesMacGyver in the 80s and early 90s as Anderson's stand-in in stunt scenes, he continued this role in Stargate SG-1. Anderson's partner Greenberg gave the job as stunt coordinator and stand-in to Shea in Stargate SG-1. The first time Shea was officially double for Anderson was in Toronto when they did a MacGyver movie; Anderson had broken his foot so Shea was forced to do a stand-in.[59]
ColonelRobert Makepeace (played by Steve Makaj, seasons 1–3) was a former member of the United States Marine Corps and of Stargate Command (SGC). Originally, Makepeace was the commander of SG-3. His first on-screen appearance is in "The Broca Divide" as ranking officer and team leader of SG-3.[29] He reappears in the two episodes, two-parters in Stargate SG-1season 2. In the two-parters of season 2, Makepeace leads a rescue mission to save SG-1 (without Teal'c) from the grasp of Hathor in "Into the Fire".[63][64] In season 3's "Shades of Grey", Makepeace is discovered to be a spy for the rogue N.I.D. group under the command of Colonel Harry Maybourne, who is covertly reverse-engineering stolen alien technologies. Smaller items stolen by the rogue group would be left on a designated world for Makepeace to covertly pick up and pack back to Earth in his gear during routine missions. O'Neill had Makepeace arrested and charged with high treason against the United States and its allies.[62] While it is unknown who immediately replaced Makepeace as the commander of SG-3, eventually this position was assigned to Colonel Reynolds.[65]
ColonelAlbert Reynolds, (played by Eric Breker, seasons 2, 5, 7–10) – Introduced in "Touchstone" as a Major stationed at Area 51 and a member of the National Intelligence Department (NID). In early 2001, He is promoted to lieutenant colonel and was given command of SG-16 on a mission to Velona.[citation needed] By early 2003, Reynolds had received command of SG-3, succeeding Robert Makepeace who was charged for high treason against the United States and its allies.[65] He was also one of the few airman who helped Jack O'Neill defend Stargate Command against the Replicator army that Replicator Carter had sent through the Stargate to attack Earth while she focused on conquering the Milky Way galaxy. Reynolds was the leader of the SGC during Hank Landry's vacation to Jack O'Neill's cabin, Samantha Carter assumed his post until he returned from his mission to P9J-333.
DoctorRobert Rothman, (played by Jason Schombing, seasons 3–4) – A scientist who prior to joining Stargate Command was Daniel's research assistant. He first appears in season 3's "Forever In A Day" in a Hand device-induced delusion of Daniel Jackson, where he is placed on SG-1. His first non-fantasy appearance is in "Crystal Skull", where Rothman is tasked with researching a crystal skull. Rothman becomes a host to a Goa'uld larva and during a rescue mission on an offworld archaeological dig site in "The First Ones" and is shot dead by Colonel Jack O'Neill.
MajorMichael Griff, (played by Russell Ferrier, season 4) – Was a member of SG-2 as a captain. He accompanied SG-1 in its search to recover SG-11 and Dr. Daniel Jackson on P3X-888; during the course of the mission he was wounded by a staff weapon blast, but recovered. As commander of SG-2, Griff led a search for SG-1 after that team went missing on P3R-118. After braving a glacier that Administrator Calder had insisted SG-1 had set out to investigate, he became convinced that Colonel O'Neill would never have authorized such a mission. At General Hammond's instruction, Griff drew up plans for a covert search and rescue mission, which ultimately proved unnecessary. Later that year, Griff and SG-2 were assigned to "babysit" a team of scientists on M4C-862, a mission he sarcastically described as "non-stop excitement". When O'Neill and Teal'c arrived to relieve him, he was visibly pleased not to be responsible for dealing with the scientists anymore.
DoctorBill Lee, (played by Bill Dow, seasons 4, 6–10) – A civilian scientist and engineer who works at Stargate Command and is often called upon to work with alien technology. He first appears in "Prodigy" but does not step in the foreground until "Evolution" where he and Daniel go on a mission to Honduras to locate the Ancients' healing device but are captured and tortured by local terrorists. As seen in "Heroes", Dr. Lee is responsible for creating a staff weapon-resistant armor. He is also a recurring character on Stargate Atlantis. He devises a way to relay a warning to Atlantis in "Critical Mass" and gates to the Pegasus Galaxy from the Midway Station in "Adrift" when Atlantis goes missing. Dr. Lee remains stationed at Midway, training Kavanagh as his replacement, until the midway station is destroyed in "Midway". Dr. Lee is seen in Stargate Universes pilot "Air" as the person Dr. Nicholas Rush (Robert Carlyle) transfers to using the Communication device with stones (see Ancient technology in Stargate)
DoctorCarolyn Lam, (played by Lexa Doig, seasons 9–10) – Stargate Command's chief medical officer in seasons 9 and 10. She first appears in "Avalon Part 2" and is seemingly the first permanent one since the death of Dr. Janet Fraiser in season 7. Prior to joining Stargate Command, Dr. Lam worked with the Centers for Disease Control and Prevention; her specialty is infectious diseases. Dr. Lam has a strained relationship with her father, General Hank Landry. In "The Fourth Horseman", General Landry apologizes for not having been with her when she needed him as a child. Carolyn, her father and her mother Kim Lam, have dinner in the episode "Family Ties". Actress Lexa Doig is the real life spouse of Michael Shanks, who plays Daniel Jackson.
Recurring Secret Intelligence characters
The National Intelligence Department (NID) is a shadowy intelligence agency that appears throughout the run of Stargate SG-1 and occasionally on Stargate Atlantis. The official mandate of the NID is to provide vital civilian oversight of top secret military operations, but one of their unofficial primary goals is to procure alien technologies. A set of well-resourced illegal cells named the Rogue NID uses unscrupulous methods to achieve the goals of the official NID and is later replaced by The Trust, a shady interplanetary terrorist group. The International Oversight Advisory (IOA) is a civilian oversight committee created after the United States and Russia revealed the existence of the Stargate Program to the other permanent members of the UN Security Council in season 6.
Malcolm Barrett
Special agentMalcolm Barrett, (played by Peter Flemming, seasons 5–7, 9–10) – An NID agent introduced in season 5's "Wormhole X-Treme!".[69] His first significant appearance follows in "Smoke & Mirrors", where he helps uncovering a shadow group behind the NID who tried to attribute Senator Kinsey's apparent assassination to O'Neill.[70] After collaborating with SG-1 in season 7's "Heroes, Part 2" and "Resurrection",[32][71] Barrett expresses a personal romantic interest in Samantha Carter in season 9's "Ex Deus Machina" and season 10's "Uninvited", but she rejects his advances.[72][73] His last SG-1 appearance is in "Dominion".[74] Agent Barrett also recurs in Stargate Atlantis.
Peter Flemming had a two-line audition for "Wormhole X-Treme" for a "Man in Black" character in a possible recurring role. Every NID character introduced before Agent Barrett "had been very shady, always had an agenda", and Barrett was "the first mainstay in NID who is actually law-abiding[...], honest, [and] a good person".[77]
Harry Maybourne
ColonelHarry Maybourne, (played by Tom McBeath, seasons 1–6, 8) – A USAF Colonel introduced in season 1's "Enigma" as an NID member with ambiguous morals and loyalties. In season 2's "Bane", Maybourne leads an NID attempt to claim Teal'c for study after alien insect infected Teal'c. After further antagonizing SG-1 through rogue NID operations in "Touchstone" and "Shades of Grey", and helping SG-1 in "Foothold" [62][78][79] Maybourne flees to Russia and aids in establishing the Russian Stargate Program. He is caught in season 4's "Watergate", convicted of treason, and placed on death row.[80] O'Neill contacts Maybourne in "Chain Reaction" to help reinstate General Hammond, who was blackmailed into resigning from his position.[81] Maybourne escapes after the mission's success and covertly helps O'Neill in season 5's "Desperate Measures" and "48 Hours" in the Adrian Conrad case.[82][83] Maybourne tricks SG-1 into taking him off-world in season 6's "Paradise Lost", and is eventually exiled to a far-off planet.[84] When SG-1 meets him again in season 8's "It's Good To Be King", Maybourne leads a life of leisure as the seemingly clairvoyant ruler of the local peoples, King Arkhan I. Although the people later discover the deception, they welcome him to stay as his technological expertise has improved their standard of life, and SG-1 returns to Earth without him. He had ascended to power using an Ancient time-travelers log of his journeys into the future of the planet and ended up facing a Goa'uld invasion, but the soldiers were repelled by Jackson and Teal'c with help from one of the villagers, and O'Neill destroyed in the ship in orbit, killing the System Lord behind the attack. When the team leave, O'Neill and Maybourne part amicably with Maybourne having finally accepted responsibility towards the people he was ruling. He also reveals that he had more than one wife.[85]
Maybourne's most notable character trait is his ambiguous morals and loyalties. Maybourne's relationship with Jack O'Neill in the show varies from enemy to collaborator. After his arrest, most of his cronies left Maybourne for dead in jail. O'Neill agrees to help Maybourne temporarily get out of jail, if he in turn could get GeneralGeorge Hammond reinstated as leader of the Stargate Command (SGC) center. Early on in Maybourne's character development there were rumours of him being in love with Samantha Carter. It was originally planned that a scene in the series would depict Maybourne's feelings for Carter, but the scene was cut and the relationship was never spoken about again amongst the Stargate SG-1 producers and writers alike. When the portraying actor Tom McBeath was asked about the O'Neill–Maybourne relationship, he explained:[86]
"I can't stand you, but at some level I have a lot of respect for you. And I do actually, grudgingly have a good time when you're around, and things seem to work out."
McBeath auditioned for the part of Maybourne in Vancouver, British Columbia, Canada.[87] After auditioning for the part as Harry Maybourne, the producers revealed that he "maybe" could get a spot as a recurring character in the show. McBeath called his role as Maybourne at the start of the series "boring", but was glad for the new change in the character's direction in the series after he was convicted for treason. McBeath also commented that the writers and the producers for the show had more "fun" when his character started to "loosen" up.[86] McBeath once stated that the character of Maybourne diminished after Richard Dean Anderson's departure from the show in season 8.[88]
Robert Kinsey
Ronny Cox plays Robert Kinsey
SenatorRobert Kinsey, (played by Ronny Cox, seasons 1, 4–8) – A US senator who first appears in season 1's "Politics". In "Politics", Kinsey ignores warnings of an imminent Goa'uld invasion and instead manages to briefly shut down Stargate Command for budget reasons. In season 4's "Chain Reaction", Kinsey and the NID temporarily succeed in controlling the Stargate by blackmailing General Hammond into retirement.[81] In season 5's "2001", Kinsey aims to gain prestige through an alliance with the Aschen, but the alliance fails. (However, the alliance went ahead in the alternate but unfulfilled future reality witnessed in season 4's "2010", in which Kinsey also achieved his goal of the presidency.)[34] In season 6's "Smoke and Mirrors", a group controlling the rogue NID, known as "the Committee", tries to assassinate Kinsey and frame Col. O'Neill for his murder, but NID agent Malcolm Barret and SG-1 foil this attempt.[70] Kinsey becomes Vice-President in season 7's "Inauguration" and tries again to take control of the Stargate Program in "Lost City". Shortly after NID Agent Richard Woolsey presents incriminating evidence against Kinsey to President Henry Hayes in the same episode, Hayes "accepts" Kinsey's resignation.[65][89] Kinsey makes his last appearance in season 8's "Full Alert", where the SGC convinces Kinsey to go undercover to undermine the hierarchy of the Trust. However, the Goa'uld have completely infiltrated the Trust through their operatives working outside of the solar system, and have already implanted a symbiote within Kinsey to aid in their plans of starting a nuclear war between the US and Russia. After the SGC foil the attempt, Kinsey flees aboard an Al'kesh, but Kinsey's future remains uncertain as the Al'Kesh is destroyed while he operated a transport device.[90] Kinsey is briefly mentioned as a President in the alternative timeline (with Hayes as Secretary of Defense) in season 8 finale "Moebius".
The producers of Stargate SG-1 asked Ronny Cox if he would be interested in a role in one episode, but according to Cox it was "so much fun that they and I decided we would like to do more together". According to executive producerBrad Wright, every time they got a script from an outside editor, Kinsey was included. Cox has been noted for saying that the character has become a "Malevolent force on the show". Because of the collaboration between the producers and himself. Cox described him as a "self-aggrandizing senator who like[s] to throw his weight around", and as "Kinsey feels that the Stargate [is] being used in completely the wrong way and one that is endangering American ideals and a way of life that he believes in" and a "Born-again, right-wing, Christian fundamentalist"; Cox played him as a heroic antagonist rather than villainous. Cox was approached by the producers to play Kinsey instead of auditioning himself. Kinsey holds the position of chairman of the Senate Appropriations Committee until season 7 and oversees the national defense budget of secret projects such as the Stargate Program.[91][92]
Richard Woolsey (played by Robert Picardo, seasons 7, 9–10) – Woolsey's first appearance is following the death of Dr. Janet Fraiser late in season 7 of Stargate SG-1, Woolsey is brought into Stargate Command in the episode "Heroes" to examine the command decisions and threatens SGC personnel with court-martial if they do not cooperate.[32] When Woolsey brings his report to President Hayes in "Inauguration", he comes to realize Senator Kinsey's ambitions and presents incriminating evidence against him,[89] indirectly forcing Kinsey into resigning. Woolsey returns in the season 9 episode "Prototype" and encourages the SGC to take great risks with the captured Goa'uld-human-Ancient hybrid Khalek to learn more about the Ascension process. When the studies cause injury and death among SGC personnel, Woolsey acknowledges his own error and pleads for forgiveness from the SG-1 team.[93] Being the US's representative on the newly formed International Oversight Advisory Committee (IOA), Woolsey and some colleagues are rescued by SG-1 and the crew of the Odyssey after a catastrophe at the Gamma Site in "The Scourge", which he later considers an "eye-opening experience".[94] Woolsey makes two more appearances in "Flesh and Blood" and "Morpheus" and last appears on SG-1 in season 10's "The Shroud". Woolsey remembers the Khalek incident and decides that Daniel, who transformed into a Prior, is too dangerous and must be placed indefinitely into stasis. However, Daniel frees himself before Woolsey's plans can be enacted.[95]
Robert Picardo was in the main cast of Star Trek: Voyager from 1995 to 2001. He was familiar with Stargate SG-1 from his time as a Showtime subscriber. He was offered a one-day guest star as Richard Woolsey for the SG-1 episode "Heroes" in season seven (2004) while he was working on The Outer Limits in Vancouver (where Stargate SG-1 is filmed). He was then brought back for the follow-up episode "Inauguration", which began the rehabilitation of the Woolsey character. With the story introduction of the IOA, the Woolsey character made more regular appearances to "annoy people". Eventually, humor was added to the role, and the character was spun over to Atlantis as a recurring guest character. Picardo later became a main character in Stargate Atlantis.[96][97]
Producer Joseph Mallozzi said that "whenever I do interviews, I often draw parallels between [Amanda Tapping and Robert Picardo]. They are both incredibly kind, professional, delightful to work with, and gifted actors who always elevate the performances of anyone they share a scene with."[97]
Frank Simmons
Colonel Frank Simmons, (played by John de Lancie, seasons 5–6) – The NID liaison to Stargate Command after Col. Harry Maybourne's arrest for treason. Simmons is introduced in season 5's "Ascension" and is notorious for claiming to have the best interest of the nation at heart, while really he has his own political agenda. In "Desperate Measures", Simmons shoots O'Neill in the back while O'Neill was attempting to capture a Goa'uld who has taken Adrian Conrad as host. "48 Hours" Simmons' involvement in the disappearance of the Adrian Conrad Goa'uld, whom he now holds captive, is revealed and General Hammond has him arrested. In season 6's "Prometheus", rogue NID agents hijack the unfinished starship Prometheus and demand that Simmons, along with Adrian Conrad's Goa'uld, be released. It later turns out that Simmons had orchestrated the entire affair. When Conrad is killed, the Goa'uld infects Simmons. O'Neill is able to open an emergency airlock and releases Simmons into hard vacuum, killing both him and the Goa'uld.
Other recurring characters
Chekov
ColonelChekov, (played by Garry Chalk, seasons 5–6, 8–10) – Russia's liaison to Stargate Command following the early season 4 events of the short-lived Russian Stargate program. He first appears in season 5's "The Tomb", blaming SG-1 for the death of several Russian SG team members.[98] Chekov collaborates with the SGC several episodes later in "48 Hours", giving them a DHD from Russian possession and allowing the SGC to use the Russian Stargate.[82] Colonel Chekov is appointed as the Russian envoy to the SGC around season 6's "Redemption" and agrees to give the Russian Stargate to the US in exchange for money, X-302 technology, and a Russian SG team.[99] In season 6's "Disclosure", Colonel Chekov supports the US's presentation for the disclosure of the Stargate Program to the other three permanent members of the UN Security Council.[100] In season 8's "Full Alert", Colonel Chekov helps General O'Neill deal with the possible Goa'uld compromise of the US government and establishes a direct line between O'Neill and the Russian President to avert a nuclear war.[90] Chekov appears in season 9's "The Fourth Horseman" and "Crusade", where he has become a Russian representative of the IOA.[101][102] He makes his last appearance in "Camelot" as the commander of the Earth ship Korolev to stop the Ori fleet from invading the Milky Way, but is killed when his ship was obliterated by the Ori Fleet, though six other crew members were transported from the ship before its destruction.[103]
Garry Chalk was assigned to the role as Chekov by executive producer Michael Greenberg and N. John Smith. They asked him if he could speak Russian, Chalk replied "No." Greenberg then replied "No matter!" And gave him his own Russian coach named Alexander Kalugin, who made an appearance in the Stargate SG-1 episode "Watergate" as one of the Russian soldiers. Portraying actor Chalk had previously worked with Richard Dean Anderson, Don S. Davis and Greenberg in 1986 on MacGyver and Smith in The Beachcombers. Greenberg had said to Chalk that they were going to bring him into the show, at first there was no audition or a single phone call, until season 5 of the series. During the shows history, Chalk "Begged" the producers for his character to go through the "Stargate", but they said no, but, eventually they came up with the idea of giving him his own starship. Chalk was the only non-Russian actor assigned in "Flesh and Blood".[104]
Jacob Carter, played by Carmen Argenziano (seasons 2– 8) – A retired United States Air Force Major General and the widowed father of Samantha Carter and Mark Carter. Jacob Carter is introduced in season 2's "Secrets" as a USAF general dying of cancer, and after becoming a willing host of a Tok'ra named Selmak who would cure his illness ("The Tok'ra") he frequently recurs as the Tok'ra liaison to Earth. As a member of the Tok'ra High Council, Jacob/Selmak engages in Tok'ra covert operations and provides help to Stargate Command when problems arise. He goes on off-world missions with SG-1, and frequently provides valuable knowledge and expertise, including the ability to use a Goa'uld healing device. When the Earth-Tok'ra relations deteriorate, Jacob/Selmak remains the strongest link between the allies despite his loss of influence in the Tok'ra High Council. In season 7's "Death Knell", Jacob helps his daughter devise the Kull Disruptor as an invaluable weapon in fighting the army of Kull Warriors of Anubis's creation. He also plays a key role in retuning the Dakara Superweapon to the right pattern to attack the Replicators in season 8's "Reckoning", but Selmak dies of old age one episode later in "Threads", along with Jacob who wouldn't let go of him a few weeks earlier knowing by keeping Selmak alive he would help in the fight against the replicators but would ultimately die with Selmak due to release of a poison when a Symbiote dies. Selmak fell into a coma shortly after the Dakara Superweapon was activated thus preventing him from saving Jacob.
Catherine Womack, played by Chelah Horsdal (seasons 8–9) – A US Airforce officer of unknown rank. She takes over from Major Erin Gant as the helmsman of the Prometheus in season 8's in "New Order, Part 2" and is last seen in "Full Alert".
Paul Emerson, played by Matthew Glave (seasons 9–10) – Introduced as the commander of the Odyssey in season 9's "Off the Grid", rescuing SG-1 and aiding in their mission to take back all stolen Stargates from Ba'al's ship. In the next episode, "The Scourge", he again rescues SG-1 and a team of the IOA from the Gamma Site. In the season 9 finale, "Camelot", Emerson teams up the Odyssey with many other ships of the Jaffa, the Asgard and the Lucian Alliance to battle the Ori battlecruisers which come through an open Supergate, and the Odyssey takes much damage. Emerson continues serving as the commander of the Odyssey in season 10 but is killed by a member of the Lucian Alliance in "Company of Thieves".
Erin Gant, played by Ingrid Kavelaars (seasons 6–7) A US airforce Major and the first known helmsman of the Prometheus under Colonels Ronson and Kirkland as well as General George Hammond. She is first seen in "Memento" and last seen in "Lost City".
Kevin Marks, played by Martin Christopher (seasons 9–10) – A USAF officer aboard the Prometheus introduced in "Avalon Part 1", helping Mitchell and SG-1 locate and gain access to the Ancient stronghold at Avalon. Marks is also present during the Kalana mission in "Beachhead" and the subsequent search for Gerak's hidden mothership in orbit of Earth's moon in "Ex Deus Machina", after which he is promoted to captain. Following the destruction of the Prometheus in "Ethon", Marks is promoted to major and becomes a bridge officer on board the Odyssey, where he participates in various operations in "Camelot", "The Scourge, "Flesh and Blood", "Talion", and "Unending". Marks' last apparent SG-1 mission on board the Odyssey is the retrieval of the Ark of Truth from the Ori Home Galaxy in Stargate: The Ark of Truth. He takes a similar bridge position on board the Apollo in Atlantis's "Be All My Sins Remember'd" and transfers to Daedalus in "Search and Rescue". He is also last seen on board the George Hammond under the command of Samantha Carter.
Lionel Pendergast, played by Barclay Hope (seasons 8–9) – Replaces Colonel William Ronson as commander of the Prometheus and is first seen in "New Order Part 2" patrolling Earth. Pendergast intercepts Thor's Asgard mothership Daniel Jackson after its arrival in Earth's solar system and destroys a Trust-controlled Al'kesh in "Full Alert". He is leading the search of Osiris's cloaked Al'kesh in Earth's orbit in "Endgame" and transports the Stargate and SG-1 aboard before the enemy vessel enters hyperspace. In season 9's "Beachhead", Pendergast delivers a Mark IX warhead to an Ori beachhead and maintains the ship's position during the mission despite Jaffa and Ori interruption. Pendergast dies during the destruction of the Prometheus by an Ori satellite weapon in "Ethon"; he remained aboard to beam his crew off the ship, thus saving 76 lives.
William Ronson, played by John Novak (seasons 6–7) – A USAF Colonel and Commander of the Prometheus during seasons 6 and 7.
Ian Davidson played by Fulvio Cecere (season 10) A USAF Colonel who takes command of the Odyssey in the Season 10 episodes, "Family Ties" and "Dominion" following the death of his predecessor, Colonel Paul Emerson.
Minor characters
Adrian Conrad, played by Bill Marchant (seasons 5–6) – A wealthy business man suffering from an incurable terminal illness and desperate to uncover the regenerative biological secrets of Goa'uld symbiotes. He hopes to learn the effects a blending had on a human by abducting Carter in "Desperate Measures", but her resistance forces him to be blended with the symbiote himself. Conrad, incarcerated under the control of Frank Simmons of the NID, unknowingly assists in freeing Teal'c from the inner workings of the Stargate in "48 Hours". Rogue NID agents are eventually able to release Conrad and Simmons from custody and escape with them aboard the hijacked and unfinished starship Prometheus. The Goa'uld desires to gain control of the Prometheus and finds its way into Col. Simmons after Simmons killed Conrad. O'Neill releases the infected Simmons into the vacuum of space through an airlock during a fight.
Colin Cunningham played Major Paul Davis.Paul Davis, played by Colin Cunningham (seasons 2–6, 8) – A United States Air Force Major stationed at the Pentagon. He is introduced in season 2's "A Matter of Time" and recurs in fifteen Stargate SG-1 episodes, usually aiding Stargate Command during conflicts with other nations on Earth and other portions of the United States government. He last appears in an alternate timeline in season 8's "Moebius", and makes a cameo appearance at the beginning of Stargate: Continuum. He also appeared in the Stargate Atlantis series finale, "Enemy at the Gate".
Julia Donovan, played by Kendall Cross (seasons 6, 8–10) – A TV reporter who learns of the Prometheus program in season 6's "Prometheus" and intends to do a story on it. When she gets caught up in a rogue NID operation during her tour of the ship, she changes her mind in promised to be the first one to publish the story if and when the Stargate Program goes public. She helps cover up Stargate-related issues in season 8's "Covenant" and season 9's "Ex Deus Machina", and appears in an alternate universe in season 10's "The Road Not Taken".
Henry Hayes, played by William Devane (season 7) – The President of the United States from season 7 onwards, introduced in season 7's "Inauguration". After Vice President Robert Kinsey and NID-agent Richard Woolsey inform him about the Stargate Program and several problems at Stargate Command, Hayes replaces General Hammond with civilian Dr. Elizabeth Weir as the new commander of Stargate Command in "Lost City". Hayes then appoints Hammond to command of the Prometheus during Anubis's actual invasion on Earth and forces Kinsey into resigning. After Anubis's defeat, Hayes puts O'Neill in command of the SGC and selects Dr. Elizabeth Weir as the leader of the Atlantis expedition. His first official visit to the SGC is alluded to in season 8's "Zero Hour", and he is mentioned again in season 10's "Bad Guys". President Hayes returns in an alternate timeline in Stargate: Continuum.
Catherine Langford, played by Kelly Vint (girl in the film), Viveca Lindfors (elderly lady in the film), Elizabeth Hoffman (elderly lady in season 1), Nancy McClure (young woman in season 1) and Glynis Davies (middle-aged woman in season 2), Ellie Gall (Stargate Origins) – Daughter of archeologist Prof. Paul Langford who discovered the Stargate, as a girl she acquired an amulet depicting the Eye of Ra during the excavation of the Stargate in Giza in 1928.[105] In present-day of Stargate, she gives the amulet to Daniel before his first mission through the Stargate to Abydos. Her fiancé, a scientist named Ernest Littlefield (played by Keene Curtis and Paul McGillion), is the first human to have travelled through the Stargate since the Ancient Egyptians buried it. Catherine and Ernest were separated by a gate incident in 1945 and were re-united in the mid-season 1 episode "The Torment of Tantalus", but Ernest is never seen again in the series (although he is mentioned in season 1s "There But For the Grace of God" and season 2's "The Fifth Race"). Catherine Langford appears again in alternate universes and times in "There But For the Grace of God" and "1969". Her death is announced in season 8's "Moebius, Part 1"; she leaves her personal collection of documents and artifacts, including the golden medallion of Ra, to Daniel Jackson.
Robert Samuels, played by Robert Wisden (seasons 1–2, 8) – A USAF Lieutenant Colonel who re-introduces O'Neill to the Stargate Program in "Children of the Gods". He repeatedly raises his concerns over the SGC's and Hammond's incompetence in "Politics" and "The Serpent's Lair". Samuels last appears in an alternate universe in season 8's "Moebius (Part 1)".
Pete Shanahan, played by David DeLuise (seasons 7–8) – A police detective working in Denver, Colorado. He meets Carter and develops a romantic relationship with her in the late-season-7 episode "Chimera" after Carter's brother set them up. He is divorced since his previous wife could not quite cope with his work. Curious about Carter's work, he finds out about Carter's involvement with a top-secret project through an FBI acquaintance. After witnessing a fight between SG-1 and Osiris, he is given security clearance and learns the true nature of the Stargate program. Carter and Shanahan continue to see each other throughout season 7 and 8 until Shanahan proposes to marry Carter in "Affinity". She agrees, but she cancels the wedding and breaks up with him in "Threads" after he had already made wedding arrangements and was ready to buy a house.
General Maurice Vidrine, played by Steven Williams (seasons 4, 7) A USAF General who oversaw the development and operations of Earth's fleet of spacecraft built using alien technology, including the X-301 and BC-303.
The Abydonians are the people whom Colonel O'Neill's team encounter on another planet in the Stargate film. They are the slaves of the alien Ra and are descended from ancient Egyptians brought through the Stargate to mine the fictional mineral naqahdah. The film gives the location of their homeworld (named Abydos in SG-1's pilot episode "Children of the Gods") as the Kaliem galaxy "on the far side of the known universe" in the film, and as the closest planets to Earth in the Stargate network in "Children of the Gods". In the film, O'Neill and Daniel Jackson inspire the Abydonians and their leader, Kasuf, to rise up against Ra. The military personnel return to Earth, while Daniel falls in love with Kasuf's daughter Sha're and remains behind. In "Children of the Gods", set a year after the film, the Goa'uld Apophis attacks Abydos, abducting Sha're and her brother Skaara to serve as hosts for his queen Amaunet and son Klorel. In season 6's "Full Circle", Abydos is destroyed by the Goa'uld Anubis, but Oma Desala helps its entire population Ascend.
The Ancients are the original builders of the Stargate network, who by the time of Stargate SG-1 have Ascended beyond corporeal form into a higher plane of existence. The humans of Earth are the "second evolution" of the Ancients. The Ancients (originally known as the Alterans) colonized the Milky Way galaxy millions of years ago and built a great empire. They also colonized the Pegasus galaxy and seeded human life there, before being driven out by the Wraith. The civilization of the Ancients in the Milky Way was decimated thousands of years ago by a plague, and those who did not learn to Ascend died out. With few exceptions, the Ascended Ancients respect free will and refuse to interfere in the affairs of the material galaxy. However, their legacy is felt profoundly throughout Stargate universe, from their technologies such as Stargates and Atlantis, to the Ancient Technology Activation gene, that they introduced into the human genome through interbreeding.
The Asgard are a benevolent race that, according to the mythology of Stargate, gave rise to Norse mythology on Earth and inspired accounts of the RoswellGreys. The Asgard can no longer reproduce and perpetuate themselves by transferring their minds into new clone bodies as necessary. Extremely advanced technologically, the threat of their intervention shields many planets in the Milky Way from Goa'uld attack, including Earth.[106] They also provide much assistance to Earth in the way of technology, equipment, and expertise. Their main adversary in Stargate SG-1 are the mechanical Replicators, against which they enlist the aid of SG-1 on several occasions. The entire Asgard civilization chooses to self-destruct in "Unending" due to the degenerative effects of repeated cloning. A small colony of Asgard still exist in the Pegasus galaxy that were able to stop cloning diminishing returns. Stargate SG-1 had several Asgard puppets, and six puppeteers are necessary to make the different parts of the Asgard puppet work.[107]
The Goa'uld are the dominant race in the Milky Way and the primary adversaries from seasons 1 to 8 of Stargate SG-1. They are a parasitic species that resemble finned snakes, which can burrow themselves into a humanoid's neck and wrap around the spinal column. The Goa'uld symbiote then takes control of its host's body and mind, while providing longevity and perfect health. Thousands of years ago, the Goa'uld ruled over Earth, masquerading as gods from ancient mythologies. They transplanted humans throughout the galaxy to serve as slaves and hosts, and they created the Jaffa to serve as incubators for their larvae. The most powerful Goa'uld in the galaxy are collectively known as the System Lords.
The Jaffa are an offshoot of humanity, genetically engineered by the Goa'uld. They have an abdominal pouch which serves to incubate larval Goa'uld. The infant Goa'uld provides strength, longevity, and good health, at the cost of supplanting the Jaffa's natural immune system, making them dependent on the Goa'uld for more symbiotes. The Jaffa have a warrior culture and form the armies of the Goa'uld. In season 8 of Stargate SG-1, the Jaffa Resistance wins their race's freedom from Goa'uld oppression, resulting in the Free Jaffa Nation.
The Lucian Alliance is an interstellar group of smugglers and mercenaries that have joined together to fill the power vacuum created by the demise of the Goa'uld. When their trade partner Vala Mal Doran does not keep an agreement in their first appearance in season 8's "Prometheus Unbound", she and Daniel are placed on a Lucian Alliance wanted list. The Lucian Alliance is first referred to by name in season 9's "The Ties That Bind" and reappears as a recurring foe in seasons 9 and 10. The Lucian Alliance has obtained Goa'uld technology for their own use, and has also modified some of it, such as making plasma weapons using staff weapon technology. The Lucian Alliance story arc is left unfinished in Stargate SG-1. Another Lucian Alliance story arc would be featured in Stargate Universe.
The Ori are Ascended beings who use their infinite knowledge of the universe to force lesser beings to worship them. In essence, they used to be Ancients, however they split into separate groups due to different views of life. The Ori are religious while the Ancients prefer science. The Ori sway lesser-developed planets into worshipping them by promising Ascension through an invented and empty religion called "Origin". This religion states that they created humanity and as such are to be worshipped by their creations. It also promises its followers that, on death, they will Ascend. However, Origin was designed to channel energy from the human worshippers to the Ori. As such, the Ori never help anyone else Ascend because then they would have to share the power that they sap from their worshippers. Their ultimate goal is to completely destroy the Ascended Ancients, who they know as "the Others". All of their efforts, including their technology, are for the purpose of garnering worshippers. As Ascended beings, the Ori do not interfere directly in the mortal plane. They use instead humans called Priors, which they artificially evolve so that they are one step from Ascension, giving the Priors godly powers. Because the Ori have worshippers across the entire home galaxy of the Ancients, and using their knowledge to spread, they are nearly unstoppable.
The Replicators are a potent mechanical life-form using a quiron-based technology composed of building blocks using nanotechnology. They strive to increase their numbers and spread across the universe by assimilating advanced technologies. They are hostile to all other life-forms in the universe, but are opposed primarily by the Asgard. In the episode "Unnatural Selection", the Replicators had developed human-form Replicators, based on the technology they extracted from their Android creator, that appear just like humans and are able to change their form. Standard Replicators are resistant to energy weapons, and can only be destroyed by projectile weapons. Human-form Replicators, on the other hand, are resistant to projectile weapons as well due to the change in their nature from large blocks to smaller units the size of organic cells (cell blocks). In the episode "New Order (Part 2)", an Ancient weapon called the Replicator Disruptor was developed by O'Neill while he still had the knowledge of the Ancients in his mind. It works by blocking the cohesion between the blocks that make up the Replicators. The Replicators in the Milky Way galaxy were wiped out by the Dakara Superweapon in the two-part episode "Reckoning" at the climax of Season 8. It has been indicated that the Asgard used the same technology to defeat the Replicators in their own home galaxy as well.
The Tok'ra (literally "against Ra", the Supreme System Lord) are a faction of Goa'uld symbiotes who are opposed to the Goa'uld culturally and militarily. Spawned by the queen Egeria, they live in true symbiosis with their hosts, both beings sharing the body equally and benefitting from each other. The Tok'ra have fought the Goa'uld for thousands of years, favoring covert tactics and balancing the various System Lords against one another. Since season 2 of Stargate SG-1, the Tok'ra have become valuable allies of Earth.
The Tollan are an advanced human civilization who are introduced in season 1's "Enigma" when the SGC helps a group of them relocate from the original Tollan homeworld that had undergone catastrophic volcanic activity. The Nox take the Tollan in while they continue to search for a new home, later revealed to be named Tollana. The Tollan have a strict policy against sharing technology with more "primitive" races, instituted after such a transfer caused the civilization of their neighboring planet Serita to destroy itself in a single day.[108] Teal'c notes in season 3's "Pretense" that despite the Tollans' technological superiority, they "do not think strategically". The Tollan are wiped out by the forces of the Goa'uld Tanith in season 5's "Between Two Fires" after the Goa'uld Anubis developed technologies that neutralize Tollan weaponry.
Landry (to O'Neill): "You come all the way to Colorado Springs to check up on me? [...] You know, I'll never forget that day, on the front porch of my house, you standing there saying you wanted to tell me something about the Stargate Program."
Landry: "I was flying air support out of Bien Hoa. Caught some triple A in my left engine and had to eject. Ended up landing somewhere near the Laotian border, well north of the DMZ."