Edward James Olmos .... Commander William Adama Mary McDonnell .... Laura Roslin Katee Sackhoff .... Lt. Kara 'Starbuck' Thrace Jamie Bamber .... Captain Lee 'Apollo' Adama James Callis .... Dr. Gaius Baltar Tricia Helfer .... Number Six Callum Keith Rennie .... Leoben Conoy Grace Park .... Lt. Sharon 'Boomer' Valerii Michael Hogan .... Colonel Saul Tigh Matthew Bennett .... Aaron Doral Paul Campbell .... Billy Keikeya Aaron Douglas .... Chief Petty Officer Galen Tyrol Barclay Hope .... Transport Pilot Lorena Gale .... Priest Elosha Kandyse McClure .... Petty Officer Anastasia Dualla