| Reg Park | ... | Ursus | |
| Mireille Granelli | ... | Amiko | |
| Ettore Manni | ... | Ilo | |
| Furio Meniconi | ... | Zereteli | |
| María Teresa Orsini | ... | Kato | |
| Lilly Mantovani | ... | Slave | |
| Nino Fuscagni | ... | Miko (as Serafino Fuscagni) | |
| Giulio Maculani | ... | Varos | |
| Ugo Carboni | |||
| Claudio Scarchilli | ... | Lava | |
| Piero Pastore | ... | Amko | |
| Gaetano Quartararo | |||
| rest of cast listed alphabetically: | |||
| Claudio Ruffini | ... | Frido (uncredited) | |
Directed by | |||
| Antonio Margheriti | (as Anthony Dawson) | ||
| Ruggero Deodato | (uncredited) | ||
Writing credits(in alphabetical order) | ||
| Marcello Sartarelli | screenplay | |
Produced by | |||
| Adelpho Ambrosiano | .... | producer | |
| Natalino Vicario | .... | production inspector | |
Original Music by | |||
| Franco Mannino | (as Franco Trinacria) | ||
Cinematography by | |||
| Gábor Pogány | |||
Film Editing by | |||
| Otello Colangeli | |||
Production Design by | |||
| Riccardo Domenici | (as Dick Domenici) | ||
Makeup Department | |||
| Iolanda Conti | .... | hair stylist (as Jolanda Conti) | |
| Maurizio Giustini | .... | makeup artist | |
Production Management | |||
| Luciano Cattania | .... | production manager | |
Second Unit Director or Assistant Director | |||
| Ruggero Deodato | .... | assistant director | |
Sound Department | |||
| Mario Morigi | .... | sound | |
| Giulio Tagliacozzo | .... | sound | |
Camera and Electrical Department | |||
| Mario Capriotti | .... | camera operator | |
| Claudio Ragona | .... | camera operator | |
Editorial Department | |||
| Maria Napoleoni | .... | assistant editor (as Maria Napoleone) | |
| Full cast and crew | Company credits | External reviews |
| IMDb Adventure section | IMDb Italy section |
Some reviewers have been decidedly unkind to this minor sword-and-sandal effort but those willing to indulge the sloppy dubbing, chopping editing, and murky prints may find a certain likable quality here. Think of it as an amateurish but enthusiastic high school play, or a big mutt who climbs in your lap and licks your face. Most of the faults cited by other reviewers can't be denied but the main problem here is Hercules' curious absence from the plot (due to injuries) for a 25-minute stretch in the middle of the movie. That's a real momentum killer. Did Reg Park become ill or otherwise unavailable during the filming and thus they had to film around him? (One fight sequence uses an obvious stand-in for Park, lending some support for this theory.) Yes, the monster is more laughable than frightening with a squawk like Rodan's, and disappointingly little is made of Hercules' superhuman strength. (He isn't even bare-chested very often.) Also note the puzzling Oriental decor in some of the palace interiors. However, if you're kind, all of these things might be viewed as part of the fun.