Ronny Cox
Ronny played Senator, Vice President and President Robert Kinsey on eleven episodes of Stargate SG1 as well as Captain Edward Jellico on two episodes of Star Trek TNG. He was also in Robocop, Cop Rock, Sweet Justice, Age of Dinosaurs, St Elsewhere and is an accomplished singer/songwriter. IMDB Official Twitter
Mark Burgess
Mark was great as Dr. Jeremy Franklin on Stargate Universe (14 Episodes), he has also guest starred on Stargate Atlantis (Vegas), Earth: Final Conflict, Dark Angel, Bates Motel and The Killing. IMDB Twitter
David Kaufman
David played Mark Gilmour in the Stargate SG1 episode Zero Hour as well as appearing on ER, Boston Legal, Rizzoli & Isles and providing the voices on shows/games such as The Clone Wars, Superman, Stuart Little and Halo 4. IMDB Twitter Official Behind The Voice
Richard Side
Richard appeared on just one episode of Stargate as the Guide in the SG1 episode Icon, he has also been on Earthsea, The Collector, Cold Squad, Eureka and Elf. He has also written for television with credits which include Kung Fu: The Legend Continues, Comedy Inc and The Debaters. IMDB Twitter