Anthony Steffen

Lieutenant 'Garringo' Harris

Solvi Stübing

Julie

Raf Baldassarre

Damon

Frank Braña

Bill

José Bódalo

Sheriff Klaus

Antonio Molino Rojo

Harriman

María Salerno

Nancy Grayson (as Marta Monterrey)

Peter Lee Lawrence

Johnny

Luis Marín

Pete, Bounty Hunter

Barta Barri

Wilson (as Barta Barry)

Rossana Rovere

Sarah

Lorenzo Robledo

Deputy Sheriff Tom

Luis Induni

Dr. Grayson

Guillermo Méndez

Johnny's Henchman

Xan das Bolas

Potter (uncredited)

Beni Deus

Padre de Johnny (uncredited)

Tito García

Ted (uncredited)

Rafael Hernández

Militar (uncredited)

A. Lawrence

Johnny de niño (uncredited)

Ángel Menéndez

Coronel (uncredited)

Mario Morales

Telegrafista (uncredited)

José Moreno

Fred (uncredited)

Maribel del Pozo

Julie de niña (uncredited)

Alfonso Rojas

Coronel (uncredited)

Carlos Romero Marchent

Bob (uncredited)

Santiago Santos

Amigo de Sam y Bill (uncredited)