Edward James Olmos Cmdr. William Adama Actor Mary McDonnell President Laura Roslin Actor Katee Sackhoff Lt. Kara "Starbuck" Thrace Actor Jamie Bamber Capt. Lee "Apollo" Adama Actor James Callis Dr. Gaius Baltar Actor Tricia Helfer Number Six, Gina Inviere Actor Grace Park Lt. Sharon "Boomer" Valerii Actor Michael Hogan Col. Saul Tigh Actor Aaron Douglas Chief Galen Tyrol Actor Tahmoh Penikett Lt. Karl "Helo" Agathon Actor Paul Campbell Billy Keikeya Actor Nicki Clyne Crewman Specialist Cally Henderson Actor Alessandro Juliani Lt. Felix Gaeta Actor Kandyse McClure Officer Anastasia Dualla Actor Michelle Forbes Adm. Helena Cain Guest Star Graham Beckel Col. Jack Fisk Guest Star John Pyper-Ferguson Capt. Cole "Stinger" Taylor Guest Star Sebastian Spence Lt. Noel "Narcho" Allison Guest Star Leah Cairns Racetrack Guest Star Fulvio Cecere Lt. Alastair Thorne Guest Star Mike Dopud Gage Guest Star Derek Delost Vireem Guest Star Vincent Gale Chief Peter Laird Guest Star Michael Jonsson Pegasus Guard No. 1 Guest Star P.J. Prinsloo Lt. Mei "Freaker' Firelli" Guest Star Paul Lazenby Pegasus Guard No. 2 Guest Star Michael Rymer Director Anne Cofell Saunders Writer