Special Guest Stars Lucy Lawless as D'Anna Biers Guest Stars Donnelly Rhodes as Dr. Cottle Kate Vernon as Ellen Tigh Matthew Bennett as Aaron Doral Co Starring Michael Hogan as Saul Tigh Aaron Douglas as Galen Tyrol Tahmoh Penikett as Karl "Helo" Agathon Alessandro Juliani as Felix Gaeta Kandyse McClure as Anastasia "Dee" Dualla Leah Cairns as Lt. Margaret "Racetrack" Edmondson Bodie Olmos as Lt. Brenden "Hotdog" Constanza Paul Campbell as Billy Keikeya Luciana Carro as Captain Louanne "Kat" Katraine Ty Olsson as Captain Aaron Kelly Aleks Paunovic as Marine Sgt. Fischer Jeremy Guilbaut as Lt. Joe Hammerhead Palladino Curtis Lee Hicks as Marine Sergeant Yee Jee Tso as Staffer Kevan Kase as Pvt. Scott Kelso Patrick Harrison as Bell