Cmdr. Rod Jackson (as Jack Stuart)
Lisa Nielson (as Amber Collins)
Lt. Jim Harris (as Rene Baldwin)
Sharu
Lt. Teri Sanchez
General Norton
Igrun
Capt. Frank Pulasky (as Freddy Unger)
Norton's Communications Technician
Control Room Technician
Older Officer
Snow Devil
Peter the Waiter
Snow Devil (uncredited)
Dr. Schmidt (uncredited)
Judo Trainee (uncredited)
Spaceman (uncredited)
Countess (uncredited)
Lt. Tina Marley (uncredited)
Prof. Stevens (uncredited)
Control Room Technician (uncredited)
Control Board Operator (uncredited)