Special Guest Stars Lucy Lawless as Number Three Guest Stars Donnelly Rhodes as Dr. Cottle Callum Keith Rennie as Leoben Conoy Matthew Bennett as Number Five Rick Worthy as Simon Co Starring 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 Tiffany Lyndall-Knight as Hybrid Eileen Pedde as Sgt. Mathias
