Edward James Olmos Cmdr., Adm. William Adama Actor, Director Mary McDonnell Laura Roslin Actor Katee Sackhoff Capt. Kara "Starbuck" Thrace Actor Jamie Bamber Capt. Lee "Apollo" Adama Actor James Callis Dr. Gaius Baltar Actor Tricia Helfer Number Six Actor Grace Park Lt. Sharon "Boomer" Valerii Agathon Actor Michael Hogan Colonel Saul Tigh Actor Aaron Douglas Chief Galen Tyrol Actor Michael Trucco Ensign Samuel Anders Actor Lucy Lawless D'Anna Biers Actor Tahmoh Penikett Captain Karl "Helo" Agathon Actor Kate Vernon Ellen Tigh Actor Donnelly Rhodes Dr. Cottle Actor Alessandro Juliani Lt. Felix Gaeta Actor Kandyse McClure Lt. Anastasia Dualla Actor Callum Keith Rennie Leoben Conoy Actor Dean Stockwell John Cavil Guest Star Rekha Sharma Tory Foster Actor Richard Hatch Tom Zarek Guest Star Michael Rymer Director Michael Nankin Director Wayne Rose Director John Dahl Director Rod Hardy Director Ronald D. Moore Director, Writer Anthony Hemingway Director Robert M. Young Director Gwyneth Horder-Payton Director David Weddle Writer Michael Angeli Writer Michael Taylor Writer Mark Verheiden Writer Jane Esperson Writer Seamus Kevin Fahey Writer Ryan Mottesheard Writer Jane Espenson Writer Bradley Thompson Writer