 | Stan Ivar als Mike Davison |
 | Wendy Schaal als Beth Sladen |
 | Lyman Ward als David Perkins |
 | Klaus Kinski als Hans Rudy Hofner |
 | Annette McCarthy als Dr. Wendy H. Oliver |
 | Marie Laurin als Susan Delambre |
 | Robert Jaffe als Jon Fennel |
 | Diane Salinger als Melanie Bryce |
 | John Stinson als Astronaut #1 |
 | Buckley Norris als Concord Technician #1 |
 | Eileen Seeley als Loudspeaker - Concord (voice) |
| William Malone | Director |
| Alan Reed | Writer |
| William Malone | Writer |
| Michael McCracken | Creature Design |
| Harry Mathias | Director of Photography |
| William Malone | Producer |
| Johanna Ray | Casting |
| Don Stern | Associate Producer |
| Michael Novotny | Art Direction |
| William G. Dunn | Producer |
| Ronnie Hadar | Executive Producer |
| Bette Jane Cohen | Editor |
| Doug Beswick | Special Effects |
| Thomas Chase | Original Music Composer |
| Steve Rucker | Original Music Composer |
| Moshe Diamant | Executive Producer |
| Randy Popplewell | Stunt Coordinator |
| Randy Popplewell | Stunts |
| Josh Rushton | Color Timer |
