Main Characters Dr. Nicholas Rush 40 main appearances Everett Young 40 main appearances Matthew Scott 40 main appearances Chloe Armstrong 40 main appearances Eli Wallace 40 main appearances Tamara Johansen 40 main appearances Ronald Greer 40 main appearances Camille Wray 25 main appearances
Recurring Guest Characters Adam Brody 39 guest appearances Dale Volker 39 guest appearances Lisa Park 36 guest appearances 2nd Lt. Vanessa James 35 guest appearances Camille Wray 3 guest appearances Colonel David Telford 17 guest appearances Darren Becker 17 guest appearances Sgt. Hunter Riley 16 guest appearances Varro 14 guest appearances Jeremy Franklin 13 guest appearances Cpl. Barnes 10 guest appearances Airman Dunning 9 guest appearances Marine Sgt. Spencer 8 guest appearances Ginn 8 guest appearances Lieutenant General Jack O'Neill 6 guest appearances Cpl. Marsden 6 guest appearances Morrison 6 guest appearances Simeon 6 guest appearances Maryann Wallace 5 guest appearances Major Peterson 5 guest appearances ⇤ « 1 2 3 4 5 6 » ⇥