15 Greatest Ever Horror Movie Villains

Of course, no horror villain list would ever be complete without a due nod to The Exorcist, and its pea-soup spewing central character, Regan. Only, it's not Regan that serves as the villain of this film, but the demon Pazazu lurking in the confines of her body doing all the dirty work - quite literally.

Terrifying, horrifying, and undeniably disgusting audiences for its controversy over the years, William Friedkin's seminal work is home to one of the most gruesome possession stories we can encounter on screen. Even now, the practical effects exerted on the characters are cringe-worthy to witness, as if being worn like a sock puppet by a demon wasn't scary enough.