Guest Stars Paul McGillion as Dr. Carson Beckett Robert Davi as Acastus Kolya Ryan Robbins as Ladon Radim Colm Meaney as Cowen Erin Chambers as Sora Michael Puttonen as Smeadon Co Starring David Nykl as Dr. Radek Zelenka Steve Archer as Generator-Room Guard Jodie Graham as Genii Soldier Cory Monteith as Genii Private Colin Corrigan as Guard #2 Jason Diablo as Guard Conan Graham as Genii Soldier