Franco Nero

Yodlaf Peterson

Tomas Milian

El Vasco

Jack Palance

John

Fernando Rey

Prof. Xantos

Iris Berben

Lola

José Bódalo

General Mongo Alvarez

Karin Schubert

Zaire Harris

Eduardo Fajardo

Colonel

Gino Pernice

Tourneur

Tito García

Tiger

Gérard Tichy

Lieutenant

Lorenzo Robledo

Captain Jim

Álvaro de Luna

John's Henchman

Claudio Scarchilli

Mexican Officer

Rafael Albaicín

Mongo Henchman (uncredited)

Simón Arriaga

Mongo Henchman (uncredited)

José Canalejas

Mongo Henchman (uncredited)

Víctor Israel

Rosenbloom Henchman with Brown Suit (uncredited)

José Luis Lizalde

Cantina Barman (uncredited)

José Marco

Fort Yuma Corporal (uncredited)

Vicente Roca

Rosenbloom Henchman with Tropical Hat (uncredited)