Trinity series star Bud Spencer returns to the Wild West in director Michele Lupo's comic tale of an outlaw drifter, Buddy, who is mistaken for a doctor after his Indian companion inadvertently steals a bag of surgical instruments. When a band of murderous outlaws attempts to overrun the small town Buddy is passing through, the presumed medico shows that his true talent is cracking skulls. Music is composed by Ennio Morricone.
| Directing | Michele Lupo | Director |
| Editing | Eugenio Alabiso | Editor |
| Production | Horst Wendlandt | Producer |
| Production | Claudio Mancini | Producer |
| Writing | Sergio Donati | Story |
| Production | Franco Coduti | Production Supervisor |
| Production | Walter Massi | Production Supervisor |
| Sound | Danilo Moroni | Recording Supervision |
| Crew | Giovanni Corridori | Special Effects |
| Directing | Elvira D'Amico | Script Supervisor |
| Production | Walter Massi | Production Assistant |
| Writing | Gene Luotto | Dialogue |
| Directing | Salvatore Basile | Assistant Director |
| Sound | Gaetano Testa | Boom Operator |
| Editing | Marcello Cannone | Assistant Editor |
| Production | Tullio Lullo | Production Assistant |
| Production | Diego Gómez Sempere | Production Manager |
| Production | Maurizio Mancini | Production Assistant |
| Costume & Make-Up | Luciano Sagoni | Costume Design |
| Production | Maurizio Mancini | Production Supervisor |
| Writing | Sergio Donati | Screenplay |
| Directing | Ricky Sacco | Second Assistant Director |
| Art | Osvaldo Desideri | Set Dresser |
| Editing | Viviana Massi | Assistant Editor |
| Art | Osvaldo Desideri | Set Decoration |
| Sound | Ennio Morricone | Music |
| Production | Franco Coduti | Production Assistant |
| Editing | Lorenzo Costantini | First Assistant Editor |
| Production | Alessandro Mancini | Second Assistant Production Coordinator |
| Production | Tullio Lullo | Production Supervisor |
| Camera | Franco Di Giacomo | Director of Photography |
| Production | Walter Patriarca | Production Designer |