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Richard Kiel as Golob |
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Corinne Cléry as Barbara Gibson |
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Barbara Bach as Lady Agatha |
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Leonard Mann as Nick |
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Arthur Kennedy as Dr. Kraspin |
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Ivan Rassimov as Lord Graal |
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Massimo Serato as Great Brother |
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Marco Yeh as Tom Tom |
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Venantino Venantini as |
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Vito Fornari as |
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José Quaglio as |
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Attilio Duse as |
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Ottaviano Dell'Acqua as Technician |
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Larry Dolgin as Narrator (voice) |
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Hal Yamanouchi as Humanoid Soldier |
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Milla Johansson as Girl who is drained of blood (uncredited) |
| Directing | Aldo Lado | Director |
| Writing | Adriano Bolzoni | Writer |
| Writing | Aldo Lado | Writer |
| Production | Giorgio Venturini | Producer |
| Sound | Ennio Morricone | Music |
| Camera | Silvano Ippoliti | Director of Photography |
| Editing | Mario Morra | Editor |
| Art | Enzo Bulgarelli | Production Design |
| Art | Giacomo Caló Carducci | Art Direction |
| Costume & Make-Up | Luca Sabatelli | Costume Design |
| Costume & Make-Up | Giannetto De Rossi | Makeup Artist |
| Costume & Make-Up | Mirella De Rossi | Hairstylist |
| Visual Effects | Armando Valcauda | Animation Coordinator |
| Writing | Adriano Bolzoni | Story |
| Crew | Enzo G. Castellari | Second Unit |
| Visual Effects | Antonio Margheriti | Special Effects Supervisor |
| Crew | Germano Natali | Pyrotechnician |
| Crew | Armando Valcauda | Special Effects |
| Production | Vittorio Biferale | Production Manager |
| Production | Cecilia Bigazzi | Production Supervisor |
| Production | Arduino Mercuri | Production Manager |
| Production | Giuliano Principato | Production Manager |
| Production | Viero Spadoni | Production Manager |
