Robert Patrick
Patrick played Colonel Sumner in Rising the Stargate Atlantis pilot and he also starred in The Unit, The X-Files and Terminator 2 as well as having major recurring roles on True Blood, Dusk Till Dawn, Last Resort and is currently Cabe Gallo on Scorpion. IMDB Twitter
Corin Nemec
Corin played Jonas Quinn in 26 episodes of Stargate SG1 but made his name in Parker Lewis Can’t Lose, he has also appeared in The Stand, Ghost Whisperer and the cracking creature features Sand Sharks and Dragon Wasps. He is currently recouping from another operation in his ongoing recovery from his on set accident in Belize back in Jan 2013. IMDB Twitter
Armin Shimerman
Armin played Anteaus in the Stargate SG1 episode The Nox. He also played Quark on Deep Space Nine and appeared in episodes of Voyager, The Next Generation and Buffy The Vampire Slayer. IMDB Behind The Voice Twitter