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Dale Robinette as Robert Sands |
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Ralph Bellamy as Miles Larson |
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Keenan Wynn as Ely |
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Patrick Macnee as Horatio Black |
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Robert Tessier as Benjamin |
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Beth Specht as Holly |
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Karen Specht as Ivy |
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Ronnie Carol as Marcia Buttercup |
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Stephen Keep Mills as Harold Darling |
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William Bryant as Harry Grebe |
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Marianne Marks as Ming |
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Read Morgan as Charlie |
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Harold Sakata as Oriental Man |
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Ned Wilson as Martian |
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Fil Formicola as Bellboy |
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Bob Hastings as Desk Clerk |
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Than Wyenn as Assistant Manager |
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Walt Davis as Third Technician |
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Jason Corbett as Lab Technician |
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Bob Hevelone as Fifth Technician |
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Davis Roberts as Doorman |
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Elven Havard as First Man |
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Cliff Carnell as Second Technician |
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George Spicer as Fourth Technician |
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Seth Foster as First Technician |
| Writing | Jimmy Sangster | Writer |
| Sound | Richard Shores | Music |
| Editing | Melvin Shapiro | Editor |
| Editing | Bobbie Shapiro | Editor |
| Art | Audrey A. Blasdel | Set Decoration |
| Art | Dale Hennesy | Art Direction |
| Camera | Jack Woolf | Director of Photography |
| Production | Jay Daniel | Producer |
| Production | David Gerber | Executive Producer |
| Costume & Make-Up | Grady Hunt | Costume Design |
| Art | Ross Bellah | Art Direction |
| Directing | Barry Shear | Director |
| Crew | Tony Brubaker | Stunts |
| Crew | Dar Robinson | Stunt Double |
| Sound | Richard Shores | Original Music Composer |
