 | Marjoe Gortner als Akton |
 | Caroline Munro als Stella Star |
 | Christopher Plummer als The Emperor |
 | David Hasselhoff als Simon |
 | Robert Tessier als Thor |
 | Joe Spinell als Count Zartharn |
 | Nadia Cassini als Corelia, Queen of the Amazons |
 | Judd Hamilton als Elle / Jiakta |
 | Dirce Funari als Amazon Woman |
 | Cindy Leadbetter als Amazon Woman |
 | Salvatore Baccaro als Neanderthal Man |
 | Omero Capanna als Spaceship Guard |
 | Donald Hodson als Prisoner |
 | Hamilton Camp als Elle (voice) |
 | Caterina Zinnerman als Amazon girl (uncredited) |
| Luigi Cozzi | Screenplay |
| Luigi Cozzi | Director |
| Nat Wachsberger | Screenplay |
| Matteo Verzini | Special Effects |
| Massimo Anzellotti | Music Editor |
| Sergio Montanari | Editor |
| Paul Beeson | Director of Photography |
| R. A. Dillon | Additional Dialogue |
| Patrick Wachsberger | Producer |
| Aurelio Crugnola | Production Design |
| Luigi Nannerini | Production Supervisor |
| Ron Hays | Visual Effects Supervisor |
| Germano Natali | Special Effects |
| Massimo Anzellotti | Sound Designer |
| Roberto D'Ettorre Piazzoli | Director of Photography |
| Nat Wachsberger | Producer |
| John Barry | Music |
| John Barry | Conductor |
| Ottaviano Dell'Acqua | Stunts |
| Paolo Zeccara | Modeling |
| Armando Valcauda | Special Effects |
| Kenneth Hall | Supervising Music Editor |
| Goffredo Unger | Stunt Coordinator |
| Armando Valcauda | Animation |
| Simone Gallina | Props |
| Stephen Bushelman | Dialogue Editor |
