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 Guest Star Nicki Clyne Crewman Specialist Cally Henderson Guest Star Alessandro Juliani Lt. Felix Gaeta Guest Star Kandyse McClure Officer Anastasia Dualla Actor Sam Witwer Crashdown Guest Star Kate Vernon Ellen Tigh Guest Star Alonso Oyarzun Socinus Guest Star Kerry Norton Paramedic Layne Ishay Guest Star Kurt Evans Paramedic Kim Guest Star Chris Shields Cpl. Venner Guest Star Luciana Carro Louanne "Kat" KatraineBodie Olmos:Brendan "Hot Dog" ConstanzaLeah Cairns:Racetrack Guest Star Bodie Olmos Brendan "Hot Dog" Constanza Guest Star Jen Halley Seelix Guest Star Warren Christie Tarn Guest Star Ty Olsson Capt. Kelly Guest Star Nicholas Treeshin Sgt. Watkins Guest Star Michael Tayles Flyboy Guest Star Leah Cairns Racetrack Guest Star Aleks Paunovic Marine Sgt. Fischer Guest Star Michael Rymer Director Bradley Thompson Writer David Weddle Writer