| Person | Type | Job | Role(s) |
|---|---|---|---|
 Dick Stratton | Crew | Production | Associate Producer |
Don Barton | Crew | Directing | Director, Producer, Screenplay |
George J. Yarbrough | Crew | Editing | Editor |
Jack McGowan | Crew | Camera | Director of Photography |
Lee O. Larew | Crew | Writing | Original Story |
Paul Galloway | Crew | Production | Unit Manager |
Robert M. Smith Jr. | Crew | Production | Associate Producer |
Ron Kivett | Crew | Visual Effects | Creature Design, Original Story |
Lee J. O'Donnell | Crew | Costume & Make-Up | Makeup Artist |
Jamie DeFrates | Crew | Sound | Original Music Composer |
Barry Hodgin | Crew | Sound | Original Music Composer |
Martha Fillyaw | Crew | Visual Effects | Creature Design |
Les Lancaster | Crew | Visual Effects | Creature Design |
Dave Dickerson | Cast | INPIT Agent Walker Stevens | |
Gerald Cruse | Cast | Marine Biologist Rex | |
Marshall Grauer | Cast | Dr. Kurt Leopold | |
Nancy Lien | Cast | Girl Camper | |
Paul Galloway | Cast | Actor | Sheriff Lou Krantz |
Rich Valliere | Cast | Deputy Sheriff | |
Sanna Ringhaver | Cast | Actress | INPIT Agent Martha Walsh |
Wade Popwell | Cast | The Monster | |
Russell Holcomb | Cast | ||
Gloria Brady | Cast | ||
Del Galloway | Cast | ||
Hal Nearhoof | Cast | ||
Jim Merrill | Cast | Boy on Porch | |
Elizabeth Barton | Cast | Girl on Porch | |
Bob Knowles | Cast | ||
Carol Thompson | Cast | ||
Jack Weatherford | Cast | ||
Doug Thomas | Cast | Reporter | |
| Person | Type | Job | Role(s) |
