Klaus Kinski as Don Lope de Aguirre

Helena Rojo as Inés de Atienza

Del Negro as Brother Gaspar de Carvajal

Ruy Guerra as Don Pedro de Ursúa

Peter Berling as Don Fernando de Guzmán

Cecilia Rivera as Flores, Aguirre's Daughter

Daniel Ades as Perucho

Edward Roland as Okello

Alexandra Cheves as

Armando Polanah as Armando

Daniel Farfán as

Julio E. Martínez as

Alejandro Repullés as Gonzalo Pizarro

Claus Biederstaedt as Brother Gaspar de Carvajal (voice) (uncredited)

Lothar Blumhagen as Don Pedro de Ursúa (voice) (uncredited)

Heinz Theo Branding as Don Fernando de Guzmán (voice) (uncredited)

Christian Brückner as Balthasar (voice) (uncredited)

Michael Chevalier as Conqueror Being Beheaded (voice) (uncredited)

Norbert Gescher as Conqueror (voice) (uncredited)

Justo González as González (uncredited)

Uta Hallant as Inés / Flores (voice) (uncredited)

Manfred Lehmann as Conqueror (voice) (uncredited)

Antonio Marquez as (uncredited)

Gerd Martienzen as Don Lope de Aguirre (voice) (uncredited)

Edgar Ott as Gonzalo Pizarro (voice) (uncredited)

Uwe Paulsen as Okello (voice) (uncredited)

Dieter Ranspach as Perucho (voice) (uncredited)