Terence Hill as Kid

Bud Spencer as Ben

John Sharp as Jefe

Patty Shepard as Liza

Donald Pleasence as Doctor

Deogratias Huerta as Attila

Manuel de Blas as Paganini

Luis Barbero as Jeremias

Emilio Laguna as Director coral

Rafael Albaicín as Feriante

Giancarlo Bastianoni as Gimnasta

Roberto Alessandri as

Ada Pometti as Chica 1

José Yepes as

Inés Morales as Chica 2

José Luis Lizalde as

Omero Capanna as Matón en la fiesta (uncredited)

Giovanni Cianfriglia as Boxeador (uncredited)

Rémy Julienne as Matón motorista (uncredited)

Rocco Lerro as Gimnasta (uncredited)

Manuel Mateos as (uncredited)

Franco Moruzzi as Gimnasta (uncredited)

José Panizo as Bingo (uncredited)

Osiride Pevarello as Gymnast (uncredited)

José Santa Cruz as Lefty (uncredited)

Pietro Torrisi as Gimnasta (uncredited)

Franco Ukmar as Gimnasta (uncredited)

Marcello Verziera as Boxeador (uncredited)

Danilo Recanatesi as Henchman (uncredited)