The Brainiac

In 1661 Mexico, Baron Vitelius is executed for witchcraft. 300 years later, during a comet's return, he resurfaces as a brain-eating monster seeking revenge on the Inquisitors' descendants.

The Brainiac is a 1963 drama horror movie directed by Chano Urueta, starring Germán Robles, Abel Salazar, David Silva. It holds an IMDb rating of 5.1/10 from 1,502 votes and runs 1h 17m.