 | Terence Hill als Kid |
 | Bud Spencer als Ben |
 | John Sharp als Jefe |
 | Patty Shepard als Liza |
 | Donald Pleasence als Doctor |
 | Deogratias Huerta als Attila |
 | Manuel de Blas als Paganini |
 | Luis Barbero als Jeremias |
 | Emilio Laguna als Director coral |
 | Rafael Albaicín als Feriante |
 | Giancarlo Bastianoni als Gimnasta |
 | Roberto Alessandri |
 | Ada Pometti als Chica 1 |
| José Yepes |
 | Inés Morales als Chica 2 |
| José Luis Lizalde |
 | Omero Capanna als Matón en la fiesta (uncredited) |
 | Giovanni Cianfriglia als Boxeador (uncredited) |
 | Rémy Julienne als Matón motorista (uncredited) |
 | Rocco Lerro als Gimnasta (uncredited) |
| Manuel Mateos als (uncredited) |
 | Franco Moruzzi als Gimnasta (uncredited) |
| José Panizo als Bingo (uncredited) |
 | Osiride Pevarello als Gimnasta (uncredited) |
 | José Santa Cruz als Lefty (uncredited) |
 | Pietro Torrisi als Gimnasta (uncredited) |
| Franco Ukmar als Gimnasta (uncredited) |
| Marcello Verziera als Boxeador (uncredited) |
| Marcello Fondato | Director |
| Marcello Fondato | Screenplay |
| Francesco Scardamaglia | Screenplay |
| Mario Cecchi Gori | Producer |
| Guido De Angelis | Original Music Composer |
| Maurizio De Angelis | Original Music Composer |
| Arturo Zavattini | Director of Photography |
| Sergio Montanari | Editor |
| Marcello Fondato | Story |
| Francesco Scardamaglia | Story |
| Luca Sabatelli | Costume Design |
| Luciano Giustini | Makeup Artist |
| Vincenzo Mazzucchi | Production Manager |
| Pierantonio Martini | Assistant Production Design |
| José Luis Chinchilla | Stunts |
| Roberto Brega | Camera Operator |
| Nadia Bonifazi | Assistant Editor |
| Isabel Ruiz Capillas | Script Supervisor |
| Giandomenico Stellitano | Production Secretary |
| Franco Vanorio | Production Design |
| Giorgio Ubaldi | Master at Arms |
| Luciano Luna | Line Producer |
| Rémy Julienne | Stunt Driver |
| Diego Gómez Sempere | Production Manager |
| Renato Fiè | Unit Manager |
| Mario Lupi | Administration |
| Rinaldo Ricci | First Assistant Director |
| Paolo Fondato | First Assistant Director |
| Santiago Ontañón | Production Design |
| Fausto De Lisio | Hairstylist |
| Alfio Meniconi | Assistant Makeup Artist |
| Nino Cristiani | Camera Operator |
| Giuseppe Maccari | Camera Operator |
| Domenico Dubbini | Sound |
| Benito Alchimede | Boom Operator |
| Guglielmo Maga | Key Grip |
| Alfio Ambrogi | Gaffer |
| Nicola Arresto | Still Photographer |
| Gianni D'Amico | Sound Mixer |
