Starship C57D travels to planet Altair 4 in search of the crew of spaceship "Bellerophon," a scientific expedition that has been missing for twenty years. They find themselves unwelcome by the expedition's lone survivor and warned of destruction by an invisible force if they don't turn back immediately.
Dr. Edward Morbius
Altaira Morbius
Commander John J. Adams
Lt. 'Doc' Ostrow
Lt. Jerry Farman
Cookie
Chief Engineer Quinn
Bosun
Crewman Grey
Crewman Youngerford
Crewman Strong
Crewman Randall
Crewman Lindstrom
Crewman Moran
Crewman Nichols
Crewman Silvers
Crewman (uncredited)
Crewman (uncredited)
Narrator (voice) (uncredited)
Robby the Robot (interior) (uncredited)
Robby the Robot (voice) (uncredited)
Robby the Robot
