 | Vincent Price als Dr. Goldfoot / General Willis |
 | Fabian als Bill Dexter |
 | Franco Franchi als Franco |
 | Ciccio Ingrassia als Ciccio |
 | Francesco Mulè als Colonel Doug Benson |
 | Laura Antonelli als Rosanna |
 | Frankie Avalon als Craig Gamble (uncredited) (archive footage) |
 | Susan Hart als Diane (uncredited) (archive footage) |
 | Dwayne Hickman als Todd Armstrong (uncredited) (archive footage) |
 | Aron Kincaid als Motorist Who Hits Diane (uncredited) (archive footage) |
 | Moa Tahi als Hardjob - Dr. Goldfoot's Assistant (uncredited) |
 | George Wang als Fong (uncredited) |
 | Ennio Antonelli als Goldfoot Henchman (uncredited) |
 | Amerigo Santarelli als Goldfoot Henchman (uncredited) |
 | Veriano Ginesi als Bald Goldfoot Henchman (uncredited) |
 | Silvana Bacci als Robot (uncredited) |
 | Antonietta Fiorito als Robot (uncredited) |
 | Gianfranco Funari als US Army Official (uncredited) |
| Louis M. Heyward als American General (uncredited) |
 | Mario Bava als Angel with Harp (uncredited) |
| Antonio Rinaldi | Director of Photography |
| Mario Bava | Director |
| Fulvio Lucisano | Producer |
| Antonio Raffa | Production Manager |
| Louis M. Heyward | Producer |
| Louis M. Heyward | Screenplay |
| Robert Kaufman | Screenplay |
| James H. Nicholson | Story |
| Gastone Carsetti | Art Direction |
| Ronald Sinclair | Editor |
| Les Baxter | Original Music Composer |
| Rosalba Scavia | Script Supervisor |
| Saverio Diamante | Camera Operator |
| Giorgio Aureli | Assistant Camera |
| Salvatore Caruso | Second Assistant Camera |
| James H. Nicholson | Executive Producer |
| Samuel Z. Arkoff | Executive Producer |
