 | Terence Hill als Johnny Firpo |
 | Bud Spencer als Charlie Firpo |
 | Luciano Catenacci als Paragoulis the Greek |
 | Marisa Laurito als Sister Susanna |
 | Kim McKay als Pupa |
 | Sal Borgese als Nynfus |
 | Jerry Lester als Mike Firpo |
 | Woody Woodbury als Admiral O'Connor |
 | Carlo Reali als Marine Officer |
 | Riccardo Pizzuti als Mancino |
| Giancarlo Bastianoni als Verdone |
 | Enzo Maggio als Tappo |
 | Giovanni Cianfriglia als Gangster at Car Race |
 | Claudio Ruffini als Pinky |
 | Sergio Smacchi als Smilzo |
 | Salvatore Basile als Gangster with Cigar |
| Antonio Verzura als Gangster |
| Jack McDermott als Lt. o'connor |
 | Massimo Ciprari als Man in Pool Billard Pub (uncredited) |
 | Bobby Gale als Pedro (uncredited) |
 | Giuseppe Pedersoli als Naval officer (uncredited) |
 | Mimmo Poli als Shop Owner (uncredited) |
 | Liana Tabacchino als Woman in the billiard pub (uncredited) |
| Sergio Corbucci | Director |
| Sergio Corbucci | Screenplay |
| Sabatino Ciuffini | Screenplay |
| Mario Amendola | Screenplay |
| Bruno Corbucci | Screenplay |
| Vittorio Galiano | Producer |
| Guido De Angelis | Original Music Composer |
| Maurizio De Angelis | Original Music Composer |
| Luigi Kuveiller | Director of Photography |
| Eugenio Alabiso | Editor |
| Amedeo Salfa | Editor |
| Mario Amendola | Story |
| Bruno Corbucci | Story |
| Beverly McDermott | Casting |
| Marco Dentici | Production Design |
| Franco Carretti | Costume Design |
| Luciano Giustini | Key Makeup Artist |
| Giancarlo Marin | Key Hair Stylist |
| Vittorio Galiano | Production Manager |
| Maurizio Pastrovich | Production Manager |
| Amanzio Todini | Assistant Director |
| Nick Alexander | Sound Editor |
| Italo Cameracanna | Foley Artist |
| Romano Checcacci | Sound Mixer |
| Nadia Boggian | Assistant Editor |
| Teresa Negozio | Assistant Editor |
| Patrizia Zulini | Script Supervisor |
| Lamberto Andreani | Production Secretary |
| Bruno Bizzoni | Production Secretary |
