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

Armando Polanah

as Armando

Daniel Farfán

Julio E. Martínez

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)