Edward James Olmos Cmdr. William Adama Actor Mary McDonnell President Laura Roslin Actor Katee Sackhoff Lt. 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 Actor Michael Hogan Col. Saul Tigh Actor Aaron Douglas Chief Galen Tyrol Actor Tahmoh Penikett Lt. Karl "Helo" Agathon Actor Paul Campbell Billy Keikeya Actor Nicki Clyne Crewman Specialist Cally Henderson Actor Alessandro Juliani Lt. Felix Gaeta Actor Kandyse McClure Officer Anastasia Dualla Actor Michael Trucco Samuel Anders Guest Star Kate Vernon Ellen Tigh Guest Star Donnelly Rhodes Dr. Cottle Guest Star Lorena Gale Elosha Guest Star Richard Hatch Tom Zarek Guest Star Chris Shields Cpl. Venner Guest Star Bodie Olmos Brendan "Hot Dog" Constanza Guest Star Leah Cairns Racetrack Guest Star Dominic Zamprogna Jammer Guest Star Jeremy Guilbaut Lt. Joe Hammerhead Palladino Guest Star Heather Doerksen Sgt. Brandy Harder Guest Star Curtis Ricks Marine Sergeant Guest Star Allan Kroeker Director Toni Graphia Writer