Edward James Olmos Adm. William Adama Actor Mary McDonnell President Laura Roslin Actor Katee Sackhoff Capt. Kara "Starbuck" Thrace Actor Jamie Bamber Cmdr. Lee "Apollo" Adama Actor James Callis Dr. Gaius Baltar Actor Tricia Helfer Number Six 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 Nicki Clyne Crewman Specialist Cally Henderson Actor Alessandro Juliani Lt. Felix Gaeta Actor Kandyse McClure Officer Anastasia Dualla Actor Richard Hatch Tom Zarek Guest Star Michael Trucco Samuel Anders Guest Star Rekha Sharma Tory Foster Guest Star Dean Stockwell John Cavill Guest Star Alisen Down Jean Barolay Guest Star Leah Cairns Lt. Margaret "Racetrack" Edmondson Guest Star David Kaye James McManus Guest Star Colin Lawrence Lt. Hamish "Skulls" McCall Guest Star Michael Rymer Director Ronald D. Moore Writer