Terence Hill

Sebastiano Coímbra / Elliot Vance

Bud Spencer

Antonio Coímbra / Greg Wonder

April Clough

Olympia Chavez

Harold Bergman

Double Agency Director

Dary Reis

Van der Bosch (as Dary Reiz)

Nello Pazzafini

Don Tango

Fernando Amaral

Ángel Duarte

Ataíde Arcoverde

Vinicio (as Ataide Arcoverde)

Dennis Bourke

Albert von Eisenburg

Giancarlo Bastianoni

Tango's Thug / Mercenary (uncredited)

Sergio Smacchi

Tango's Thug / Mercenary (uncredited)

Franco Ukmar

Tango's Thug (uncredited)

Carlos Kurt

One of the recruiters (uncredited)