 | Aldo Ray als Fred |
 | Neville Brand als Kurt |
 | Tina Louise als Cora |
 | John Carradine als Dr. Kozmar |
 | Julie Newmar als Dr. Zarma |
 | Karrie Emerson als Nancy |
 | Bridget Holloman als Heather |
| David Hawk als Brian |
| G.T. Taylor als Connie |
| Keith Fisher als Ron |
 | Amber Lynn als Joyce |
 | Jerry Butler als Eddie |
 | Tony O'Dell als Billy |
| Kimberly Bleier als Alien Guard |
 | Jody Swafford als Girl Applying Lotion |
 | Crystal Breeze als First Girl Having Sex |
| Shone Taylor als First Guy Having Sex |
| Kelly Parsons als Laura Lee |
| Scott Hunter als Young Man on Beach and Garage |
| Laura Lee als Young Lady on Beach |
| Bonnie J. Karlyle als Alien Commander |
| Kari Thompson als Alien Guard |
| Diana Payne-Myers als Alien Guard |
| Cynthia Windham als Alien Guard |
| Mardi Rustam | Producer |
| Mardi Rustam | Director |
| Joan Kasha | Associate Producer |
| Remy MacKenzie | Casting |
| Donn Markel | Makeup Effects |
| Mardi Rustam | Writer |
| Don Stern | Director of Photography |
| Henri Charr | Editor |
| Robert O. Ragland | Original Music Composer |
| Philip Dennis Connors | Writer |
| Gregory R. Wolf | Art Direction |
| Deborah Madalena-Lloyd | Set Decoration |
| Jennifer Michaud | Costume Design |
| Rhonda Spector | Makeup Artist |
| Donn Markel | Special Effects Makeup Artist |
| Walter G. Zeri | Stunt Coordinator |
| Keith Johnson | Stunt Double |
| Erika Marr | Stunt Double |
| Henri Charr | Executive Producer |
| Jeanne Van Cott | Production Manager |
| Remy MacKenzie | Casting Director |
| Michael Linn | Music Editor |
| Terry J. Chiappe | Sound Effects Editor |
| Richard Kanter | First Assistant Director |
| Bill Goodwin | Second Assistant Director |
| Richard Lance | Camera Operator |
| Ken Wiatrak | First Assistant Camera |
| Rod Thompson | Second Assistant Camera |
| Kimberly Voight | Second Assistant Camera |
| Kathryn Weygand | Script Supervisor |
| Jose Altonaga | Casting Assistant |
| Karima | Casting Assistant |
| Susan Roberts | Wardrobe Assistant |
| Kari Thompson | Wardrobe Assistant |
| Robert M. Amerian | Gaffer |
| Larry Greis | Gaffer |
| Larry J. Aube | Key Grip |
| Robert Coogan | Key Grip |
| Brian Johnson | Grip |
| Vance Trussell | Grip |
| Eusebio F. Aguila | Boom Operator |
| Irv Nafshun | Sound Mixer |
| Bill Navarro | Sound Mixer |
| Steven Nafshun | Sound Mixer |
| Sharon Beard | Still Photographer |
| Christian Lee | Assistant Set Decoration |
| Julie Roberts | Production Secretary |
| Elizabeth Smith | Production Accountant |
| Robert Miller | Production Accountant |
| David Bey | Production Assistant |
| Michael Bey | Production Assistant |
| James Knight | Production Assistant |
| Nigel Timperley | Production Assistant |
