Ritos de Frankenstein (1973)

An unspeakable cataclysm of terror! Brilliant scientist Dr. Frankenstein has finally broken the barrier between life and death by creating a new type of man, a silver-skinned creation stitched together from pieces of the dead. However, his diabolical rival, Dr. Cagliostro has his own plans and, with the aid of his grotesque bird-woman assistant, abducts the monster to create a new race of superhumans capable of carrying out the mad doctor's bidding. Enraged, Frankenstein's daughter enters the fray as medical science descends into uncharted depths of madness and violence in this wild, ferocious, monster-packed shocker from director Jess Franco, the unhinged genius who brought the world Vampyros Lesbos and Venus in Furs.