Giacomo Rossi-Stuart (Cmdr. Rod Jackson), Ombretta Colli (Lisa Nielson), Renato Baldini (Lt. Jim Harris), Wilbert Bradley (Sharu), Halina Zalewska (Lt. Teri Sanchez), Enzo Fiermonte (General Norton), Furio Meniconi (Igrun), Goffredo Unger (Capt. Frank Pulasky), Isarco Ravaioli (Norton's Communications Technician), Renato Montalbano (Control Room Technician), Piero Pastore (Older Officer), Giuliano Raffaelli (Snow Devil), Franco Ressel (), Nino Vingelli (Peter the Waiter)