 | Terence Hill als Sebastiano Coímbra / Elliot Vance |
 | Bud Spencer als Antonio Coímbra / Greg Wonder |
 | April Clough als Olympia Chavez |
 | Harold Bergman als Double Agency Director |
 | C.V. Wood Jr. als Police Officer |
 | Dary Reis als Van der Bosch (as Dary Reiz) |
 | Nello Pazzafini als Don Tango |
 | José Van de Kamp als Bernardo |
 | Fernando Amaral als Ángel Duarte |
 | Roberto Roney als Nadiño |
 | Ataíde Arcoverde als Vinicio (as Ataide Arcoverde) |
 | Claudioney Penedo als Don Tango's Boss |
 | Dennis Bourke als Albert von Eisenburg |
| Giancarlo Bastianoni als Tango's Thug / Mercenary (uncredited) |
| Franco Sattamini als Tango's Thug / Mercenary (uncredited) |
 | Sergio Smacchi als Tango's Thug / Mercenary (uncredited) |
| Franco Ukmar als Tango's Thug (uncredited) |
 | Carlos Kurt als One of the recruiters (uncredited) |
| Enzo Barboni | Director |
| Philip Edwards | Editor |
| Vittorio Galiano | Producer |
| Silvano Ippoliti | Director of Photography |
| Franco Micalizzi | Original Music Composer |
| Marco Barboni | Screenplay |
| Paul Costello | Script Coordinator |
| Mário Lúcio | Makeup Artist |
| Jorge Moreira | Art Direction |
| Luciano Sagoni | Costume Design |
| Paulo Fernando Pijnappel | Production Supervisor |
| Jorge Moreira | Production Design |
| Celia Menezes | Costume Design |
| Max Viller | Production Supervisor |
| Peter Gold | Assistant Director |
| Robert MacNamara | Construction Manager |
| Vittorio Galiano | Production Manager |
| Carlos Couto | Assistant Director |
| Andre Filho | Production Secretary |
| Hélio Silva | Director of Photography |
