| Person | Type | Job | Role(s) |
|---|---|---|---|
 Charles Gemora | Crew | Visual Effects | Creature Design |
 Edward L. Cahn | Crew | Directing | Director |
 Edward Small | Crew | Production | Executive Producer |
Einar Bourman | Crew | Costume & Make-Up | Wardrobe Master |
Frank Webster | Crew | Sound | Sound |
 Gerald Fried | Crew | Sound | Original Music Composer |
Grant Whytock | Crew | Editing | Editor |
Herman N. Schoenbrun | Crew | Art | Set Decoration |
 Jerome Bixby | Crew | Writing | Screenplay |
Kay Shea | Crew | Costume & Make-Up | Hairstylist |
Kenneth Peach | Crew | Camera | Director of Photography |
Layne Britton | Crew | Costume & Make-Up | Makeup Artist |
Max Frankel | Crew | Art | Property Master |
Robert E. Kent | Crew | Production | Producer |
Robert G. Carlisle | Crew | Sound | Sound Effects Editor |
William Glasgow | Crew | Art | Art Direction |
Ira Anderson Jr. | Crew | Crew | Special Effects |
Vou Lee Giokaris | Crew | Costume & Make-Up | Wardrobe Master |
George Rutter | Crew | Directing | Script Supervisor |
 Adele Mara | Cast | Actress | Maria Fiorillo |
 Elaine Edwards | Cast | Actress | Tina Enright |
Felix Locher | Cast | Actor | Dr. Emanuel |
 George Sawaya | Cast | Actor | Tony |
 Jack Kenney | Cast | Actor | Police Officer (uncredited) |
 Jan Arvan | Cast | Actor | Police Insp. Renaldi |
Gar Moore | Cast | Actor | Dr. Enricco Ricci |
 Luis van Rooten | Cast | Actor | Dr. Carlo Fiorillo |
 Morris Ankrum | Cast | Actor | Narrator (unconfirmed) |
 Richard Anderson | Cast | Actor | Dr. Paul Mallon |
Stephen Soldi | Cast | Workman (uncredited) | |
Rudy Germane | Cast | Actor | Police Officer (uncredited) |
Bob Bryant | Cast | Quintillus Aurelius | |
| Person | Type | Job | Role(s) |
