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 | Claudio Mancini | Producer |
| Production | Horst Wendlandt | Producer |
| Writing | Sergio Donati | Screenplay |
| Writing | Sergio Donati | Story |
| Writing | Gene Luotto | Dialogue |
| Sound | Ennio Morricone | Music |
| Art | Osvaldo Desideri | Set Decoration |
| Costume & Make-Up | Luciano Sagoni | Costume Design |
| Production | Franco Coduti | Production Supervisor |
| Production | Diego Gómez Sempere | Production Manager |
| Production | Tullio Lullo | Production Supervisor |
| Production | Maurizio Mancini | Production Supervisor |
| Production | Walter Massi | Production Supervisor |
| Directing | Salvatore Basile | Assistant Director |
| Directing | Ricky Sacco | Second Assistant Director |
| Art | Osvaldo Desideri | Set Dresser |
| Sound | Danilo Moroni | Recording Supervision |
| Sound | Gaetano Testa | Boom Operator |
| Crew | Giovanni Corridori | Special Effects |
| Editing | Marcello Cannone | Assistant Editor |
| Editing | Lorenzo Costantini | First Assistant Editor |
| Editing | Viviana Massi | Assistant Editor |
| Directing | Elvira D'Amico | Script Supervisor |
| Production | Franco Coduti | Production Assistant |
| Production | Tullio Lullo | Production Assistant |
| Production | Alessandro Mancini | Second Assistant Production Coordinator |
| Production | Maurizio Mancini | Production Assistant |
| Production | Walter Massi | Production Assistant |
| Camera | Franco Di Giacomo | Director of Photography |
| Production | Walter Patriarca | Production Designer |