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 Manone

as Duero

as Percy / Parsifal

as Jack Brody

as The Giant

as Monstruo

as Hercules

as Big Jim

as Charlie, the reporter (uncredited)

as The Monster