Terence Hill

as Elliot Vance / Sebastiano Coímbra

Bud Spencer

as Greg Wonder / Antonio Coímbra

April Clough

as Olympia Chavez

Harold Bergman

as Double Agency Director

C.V. Wood Jr.

as Police Officer

Dary Reis

as Van der Bosch

Nello Pazzafini

as Don Tango