Lee Van Cleef as Jaroo

Jim Brown as Luke

Patrick O'Neal as Chavez

Marianna Hill as Claudine

Elisha Cook Jr. as Old Convict

Iron Eyes Cody as Santana

Imogen Hassall as Dolores

Gustavo Rojo as Colonel Anguinaldo

Florencio Amarilla as Águila

Julio Peña as General Hernández

Ángel del Pozo as Lieutenant

Dan van Husen as Bandit

Ricardo Palacios as Chief Bandit

Patricio Santiago as Julio

John Clark as Prison Guard Captain

Raúl Mendoza Castro as Indian (as Raul Mendoza Castro)

Rafael Albaicín as Officer (as Rafael Albaicin)

George Ross as Guard

Charles Stalmaker as Bandit

Charly Bravo as Bandit

Peter Lenahan as Convict

Art Larkin as Convict

Per Barclay as Convict

Simón Arriaga as Mexican Soldier (uncredited)