Princess Mombi, Return to Oz
Even Disney villains of the live action persuasion deserve their moment in the spotlight too, y’know. Disney’s traumatizing sequel to The Wizard of Oz—Return to Oz—has plenty of nightmare fuel going for it, but the head-swapping Princess Mombi is the film’s most terrifying character of all. How bad is she? Well, she did plan on locking Dorothy in a tower until she reached adulthood, wherein Mombi would take the girl’s head as her own. Sick and twisted!