 | Jesse Vint als Mike Colby |
 | Dawn Dunlap als Tracy Baxter |
 | June Chadwick als Dr. Barbara Glaser |
 | Linden Chiles als Dr. Gordon Hauser |
 | Fox Harris als Dr. Cal Timbergen |
| Ray Oliver als Brian Beale |
 | Scott Paulin als Earl Richards |
 | Michael Bowen als Jimmy Swift |
| Don Olivera als SAM-104 |
 | Don Keith Opper als SAM-104 (voice) (uncredited) |
| Allan Holzman | Director |
| Jim Wynorski | Story |
| R.J. Robertson | Story |
| Jackie McNamara | Casting |
| Roger Corman | Producer |
| Wayne Springfield | Art Direction |
| Chuck Seaton | Set Decoration |
| Judith Saunders | Script Supervisor |
| Sue Dolph | Makeup Artist |
| M.J. Elliott | Still Photographer |
| Joseph T. Garrity | Art Direction |
| James J. Gilson | Gaffer |
| Christopher Horner | Production Design |
| Joseph Yanuzzi | Visual Effects Editor |
| Branda S. Miller | Sound Editor |
| John K. Adams | Sound Editor |
| Karen G. Wilson | Supervising Sound Editor |
| Deborah Gaydos | Animation |
| Allan Holzman | Editor |
| Susan Moray | Hairstylist |
| Tim Suhrstedt | Director of Photography |
| Steve Neill | Prosthetic Designer |
| Aaron Lipstadt | Production Manager |
| Roger George | Pyrotechnician |
| Mark Ulano | Production Sound Mixer |
| Susan Justin | Original Music Composer |
| Aaron Lipstadt | Second Unit Director |
| James L. Carter | Second Unit Director of Photography |
| Tim Curnen | Screenplay |
| John Carl Buechler | Special Effects Makeup Artist |
| Don Olivera | Special Effects Makeup Artist |
| Mark Shostrom | Special Effects Makeup Artist |
| R. Christopher Biggs | Special Effects Makeup Artist |
| Bart Mixon | Special Effects Makeup Artist |
| Mary Ann Fisher | Co-Producer |
| Tony Randel | Visual Effects Design Consultant |
| Karen Kubeck | Special Effects Makeup Artist |
| Karen Kubeck | Assistant Makeup Artist |
| Martin Nicholson | Associate Editor |
