Edward James Olmos Cmdr. William Adama Actor Mary McDonnell 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 Six Actor Grace Park Actor Michael Hogan Actor Aaron Douglas Actor Paul Campbell Actor John McClure Actor Matthew Bennett Actor Michael Rymer Director Ronald D. Moore Writer, Executive Producer David Eick Executive Producer Harvey Frand Producer Tom DeSanto Producer Glen A. Larson Writer