| Commander William Adama | Edward James Olmos | |
| President Laura Roslin | Mary McDonnell | |
| Dr. Gaius Baltar | James Callis | |
| Number Six / Caprica | Tricia Helfer | |
| Captain Lee Adama -- Apollo | Jamie Bamber | |
| Lt Kara Thrace -- Starbuck | Katee Sackhoff | |
| Lt. Sharon Valerii -- Boomer / Athena / Number Eight | Grace Park | |
| Colonel Saul Tigh | Michael Hogan | |
| Chief Petty Officer Galen Tyrol | Aaron Douglas | |
| Billy Keikeya | Paul Cambell | |
| Lt. Karl Agathon -- Helo | Tahmoh Penikett | |
| Crewman Specialist Cally | Nicki Clyne | |
| Tom Zarek | Richard Hatch | |
| Ellen Tigh | Kate Vernon | |
| John Cavil -- Number One | Dean Stockwell | |
| Admiral Helena Cain | Michelle Forbes | |
| Dr. Cottle | Donnelly Rhodes | |
| D'Anna Biers -- Number Three | Lucy Lawless | |
| Sam Anders | Michael Trucco | |
| Lt/Major Kendra Shaw | Stephanie Jacobsen |