 | Reg Lewis als Maciste / Maxus / Germanicus |
 | Margaret Lee als Moah |
 | Birgit Bergen als Agmir |
 | Luciano Marin als Aydar of the Sun People |
 | Andrea Aureli als Rhea |
 | Nello Pazzafini als Chief of the Cave People |
| Maria Kent als Agmin |
| Fulvia Gasser als Girl of the Sun People |
| Rocco Spataro als Dorak |
 | Rossana Canghiari als Lady (uncredited) |
| Guido Malatesta | Director |
| Guido Malatesta | Screenplay |
| Guido Robuschi | Original Music Composer |
| Guido Malatesta | Story |
| Umberta Cesarano | Production Design |
| Carlo Rambaldi | Makeup Effects |
| Arpad De Riso | Story |
| Giovanni Ranieri | Makeup Artist |
| Enzo Alfonsi | Editor |
| Arpad De Riso | Screenplay |
| Gian Stellari | Original Music Composer |
| Alfio Quattrini | Producer |
| Giuseppe La Torre | Director of Photography |
| Mario Giorsi | Costume Design |
| Giorgio Marzelli | Producer |
| Carlo Rambaldi | Makeup Artist |
