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Aldo Ray as General Randolph |
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Angelique Pettyjohn as Lisa Martyn |
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William Fair as Mitchell Carter |
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David O'Hara as Rieger |
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Frank McDonald as Mike Hodgson |
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Art Payton as Dr. Williams |
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Charles Roth as Jack Murphy |
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Carroll Borland as Rula Murphy |
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Richard Hench as Roger |
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Mike Bonavia as Decker |
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Robin Schurtz as Richard |
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Cynthia Hartline as Maggie |
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Donald G. Jackson as Medic #1 |
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Fred Olen Ray as Medic #2 |
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Christopher Ray as The Bio-Monster |
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Loren Crabtree as Jenny |
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George Randall as Dumpster Man |
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Brad Arrington as Chambers |
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Ray Lawrence as Mayfield |
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Robert King as Sheriff Miller |
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Michael Bober as Jimmy |
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Bret Miller as Cliff |
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Steve Welles as Walker |
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Liam Stone as Hench |
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Manuel Shipow as Fred |
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Stuart Weltman as Elbert |
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Kimba as Ranger |
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Jairo Leon as Agent |
| Camera | Paul Elliott | Director of Photography |
| Directing | Fred Olen Ray | Director |
| Sound | Drew Neumann | Music |
| Writing | Fred Olen Ray | Writer |
| Crew | T.L. Lankford | Additional Dialogue |
| Production | Richard Hench | Associate Producer |
| Directing | Donald G. Jackson | Assistant Director |
| Production | Miriam L. Preissel | Associate Producer |
| Visual Effects | Kenneth J. Hall | Creature Design |
| Production | Fred Olen Ray | Producer |
| Crew | Miriam L. Preissel | Additional Dialogue |
| Production | T.L. Lankford | Executive Producer |
| Production | Bret Mixon | Co-Producer |
| Editing | Miriam L. Preissel | Editor |
| Lighting | Doug Cragoe | Gaffer |
| Lighting | Dori Hamm | Gaffer |
| Camera | Tim Roarke | Grip |
| Camera | Tony Brewster | Grip |
| Camera | Ira Farmer | Grip |
| Camera | Miriam L. Preissel | Still Photographer |
| Camera | Scott Ressler | First Assistant Camera |
| Camera | Paulian Morris | First Assistant Camera |
| Camera | Robert Blackmon | Second Assistant Camera |
| Camera | Dave Huey | Second Assistant Camera |
| Crew | Scott Ressler | Second Unit Cinematographer |
| Crew | Donald G. Jackson | Second Unit Cinematographer |
| Sound | Rex Bailie | Sound |
| Sound | Craig Tomlin | Sound |
| Crew | Joy Kelley | Catering |
| Production | Emin Aljuwani | Production Assistant |
| Production | Danita Aljuwani | Production Assistant |
| Production | Michael Labbe | Production Assistant |
| Production | Bob Tinnell | Production Assistant |
| Production | Ray Filippini | Production Assistant |
| Production | Charisse Buchanan | Production Assistant |
