Guest Stars Donnelly Rhodes as Dr. Cottle 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 Nicki Clyne as Callandra "Cally" Henderson Leah Cairns as Lt. Margaret "Racetrack" Edmondson Bodie Olmos as Lt. Brenden "Hotdog" Constanza Paul Campbell as Billy Keikeya Jennifer Halley as Ensign Diana "Hardball" Seelix Dominic Zamprogna as James "Jammer" Lyman Don Thompson as Specialist 3rd Class Anthony Figurski Christian Tessier as Tucker "Duck" Clellan