Stargate
- Colonel Jonathan "Jack" O'Neil (Kurt Russell)
- Dr. Daniel Jackson (James Spader)
- Ra (Jaye Davidson)
- Catherine Langford (Viveca Lindfors)
- Skaara (Alexis Cruz)
- Sha'uri (Mili Avital)
- Lt. Charles Kawalsky (John Diehl)
- Kasuf (Erick Avari)
- Lt. Louis Ferretti (French Stewart)
Stargate SG-1
- Colonel/Brigadier General/Major General Jack O'Neill (Richard Dean Anderson) (season 1-8 main, 9-10 recurring)
- Dr. Daniel Jackson (Michael Shanks) (season 1-5 main, 6 recurring, 7-10 main)
- Captain/Major/Lt. Colonel Samantha Carter (Amanda Tapping) (season 1-10)
- Teal'c (Christopher Judge) (season 1-10)
- Major General/Lt. General George S. Hammond (Don S. Davis) (season 1-7 main, 8-10 recurring)
- Jonas Quinn (Corin Nemec) (season 6, 5 & 7 recurring)
- Major General Henry Landry (Beau Bridges) (season 9-10)
- Lt. Colonel Cameron Mitchell (Ben Browder) (season 9-10)
- Vala Mal Doran (Claudia Black) (season 10, 9 recurring, 8 guest)
Stargate: Atlantis
- Major/Lt. Colonel John Sheppard (Joe Flanigan) (Season 1-5)
- Dr. Elizabeth Weir (Torri Higginson) (Season 1-3 main, 4 recurring)
- Colonel Samantha Carter (Amanda Tapping) (Season 4 main, 1 guest, 2 guest, 3 guest, 5 recurring)
- Teyla Emmagan (Rachel Luttrell) (Season 1-5)
- Lt. Aiden Ford (Rainbow Sun Francks) (Season 1, 2 recurring, and 5 guest)
- Ronon Dex (Jason Momoa) (Season 2-5)
- Richard Woolsey (Robert Picardo) (Season 5 main, 3-4 recurring)
- Dr. Jennifer Keller (Jewel Staite) (Season 5, 4 recurring, 3 guest)
- Dr. Carson Beckett (Paul McGillion) (Season 1, 4, 5 recurring, 2-3 main)
- Dr. Rodney McKay (David Hewlett) (Season 1-5)
Stargate Universe
- Dr. Nicholas Rush (Robert Carlyle)
- Colonel Everett Young (Louis Ferreira)
- Lt. Matthew Scott (Brian J. Smith)
- Chloe Armstrong (Elyse Levesque)
- Eli Wallace (David Blue)
- Lt. Tamara Johansen (Alaina Huffman)
- MSgt. Ronald Greer (Jamil Walker Smith)
- Camile Wray (Ming-Na)
Stargate Infinity
- Major Gus Bonner (voiced by Dale Wilson)
- Stacey Bonner (voiced by Tifanie Christun)
- R.J. Harrison (voiced by Mark Hildreth)
- Seattle Montoya (voiced by Bettina Bush)
- Ec'co (voiced by Cusse Mankuma)
- Draga (voiced by Kathleen Barr)