| Edward James Olmos | Admiral William Adama |
| Mary McDonnell | President Laura Roslin |
| Katee Sackhoff | Captain Kara 'Starbuck' Thrace |
| Jamie Bamber | Lee Adama |
| James Callis | Dr. Gaius Baltar |
| Tricia Helfer | Number Six /
Caprica |
| Grace Park | Lt. Sharon 'Boomer' Valerii /
Lt. Sharon 'Athena' Agathon |
| Michael Hogan | Colonel Saul Tigh |
| Aaron Douglas | Chief Galen Tyrol |
| Tahmoh Penikett | Captain Karl 'Helo' Agathon |
| Michael Trucco | Ensign Samuel Anders |
| Kate Vernon | Ellen Tigh |
| Rick Worthy | Simon |
| Donnelly Rhodes | Dr. Sherman Cottle |
| Matthew Bennett | Aaron Doral |
| Rekha Sharma | Tory Foster |
| Kerry Norton | Medic Layne Ishay |
| Dean Stockwell | John Cavil |
| Bodie Olmos | Lt. Brendan 'Hot Dog' Constanza |
| Leah Cairns | Lt. Margaret Edmondson |
| Colin Lawrence | Lt. Hamish 'Skulls' McCall |
| Brad Dryborough | Lt. Louis Hoshi |
| Lara Gilchrist | Paulla Schaffer |
| Colin Corrigan | Marine Allan Nowart |
| Leela Savasta | Tracey Anne |
| Darcy Laurie | Dealino |
| Finn R. Devitt | Nicky Tyrol |
| Iliana Gomez-Martinez | Hera Agathon |
| Tobias Mehler | Zak Adama |
| Antony Holland | Julius Baltar |
| Simone Bailly | Shona |
| Elan Ross Gibson | Nurse Barbara |
| France Perras | Sandra Roslin |
| Sarah Deakins | Cheryl Roslin |
| Tiffany Burns | Reporter Carolyn |
| Kevin McNulty | Frank Porthos |
| Stefanie Samuels | Police Officer |
| Richard Jollymore | Marine #1 |
| Anthony St. John | Marine #2 |
| Leo Chiang | Tattooed Pilot
(uncredited) |
| Doug Drexler | Man in Hangar Bay
(uncredited) |
| Skylar Tyj | Calvin
(uncredited) |