Muscleman fights sea monsters and Amazon warriors, then returns home to find a race of giants living in a valley, into which fellow countrymen are being thrown as punishment for opposing a usurper king and his consort.
| Directing | Guido Malatesta | Director |
| Writing | Arpad De Riso | Screenplay |
| Sound | Carlo Innocenzi | Original Music Composer |
| Camera | Alejandro Ulloa | Director of Photography |
| Editing | Mario Sansoni | Editor |
| Writing | Giovanni Simonelli | Screenplay |
| Writing | Gianfranco Parolini | Screenplay |
| Costume & Make-Up | Carmen Martín | Makeup Artist |
| Costume & Make-Up | Vittorio Rossi | Costume Design |
| Crew | Beppe Domenici | Special Effects |
| Production | Manuel Pérez | Production Manager |
| Writing | Cesare Seccia | Story |
| Writing | Cesare Seccia | Screenplay |
| Writing | Sergio Sollima | Screenplay |
| Art | Ramiro Gómez | Production Design |
| Art | Carlo Santonocito | Production Design |
| Art | Antonio Patón | Assistant Production Design |
| Art | Giuseppe Ranieri | Assistant Production Design |
| Art | Hanzi Axerio | Assistant Production Design |
| Directing | Juan García Atienza | First Assistant Director |
| Directing | Romolo Guerrieri | First Assistant Director |
| Directing | Mahnahén Velasco | First Assistant Director |
| Directing | Liliana Marinucci | Script Supervisor |
| Directing | Manuel Ponce | Script Supervisor |
| Editing | Amedeo Giomini | Assistant Editor |
| Sound | Giuseppe Turco | Sound |
| Camera | Clemente Manzano | Camera Operator |
| Camera | Luis Peña | Assistant Camera |
| Camera | Gianni Maddaleni | Assistant Camera |
| Crew | Nello Pazzafini | Master at Arms |
| Crew | Eros Bacciucchi | Special Effects |
| Crew | Vittorio Galiano | Special Effects |
| Costume & Make-Up | Angelo Malantrucco | Makeup Artist |
| Production | Roberto Palaggi | Unit Manager |
| Production | Roberto Moretti | Unit Manager |
| Editing | Edmondo Lozzi | Editor |
| Production | Cesare Seccia | Production Manager |
| Directing | Jorge Grau | Second Unit Director |
| Directing | Gianfranco Parolini | Co-Director |
