- Jimmy Thompson - Crewman Youngerford
- James Drury - Crewman Strong
- Harry Harvey Jr. - Crewman Randall
- Roger McGee - Crewman Lindstrom
- Peter Miller - Crewman Moran
- Morgan Jones - Crewman Nichols
- Richard Grant - Crewman Silvers
- James Best - Crewman (uncredited)
- William Boyett - Crewman (uncredited)
- Les Tremayne - Narrator (voice) (uncredited)
- Frankie Darro - Robby the Robot (interior) (uncredited)
- Marvin Miller - Robby the Robot (voice) (uncredited)
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Rahul Saha
Capítulo disponible en las siguientes plataformas: