Fernando Bilbao

as Mazinger

as Joe el Mugre

as Jack Ritchy

as Kong

as Chino

as Crazy Bull

as Chalet Thug

as Torente

as El monstruo

as Gigante

as Komo

as Davy Crockett - Il fantasma

as Hercules

as Duero

as Percy / Parsifal

as Jack Brody

as The Giant

as Monstruo

as Big Jim

as Charlie, the reporter (uncredited)

as The Monster

as Flops (uncredited)

as Menecrates

as Colossus (uncredited)

as Bestia

as Julio

as Moko

as Monk's Henchman

as Bodo

as Chico henchman

as Vladis the Coachman

as Soldado Gilbert Adams

as (uncredited)

as Aguador (uncredited)

as Widow's ranch hand

as Goro

as Max

as Brighton