Alastor, the Radio Demon, is a sinner demon and one of the powerful Overlords of Hell. He's charming, narcissistic, sadistic, manipulative, intelligent, and gentlemanly. He's the wickedly charismatic guy who has offered to assist Charlie in her endeavors for his own amusement. He made a deal with Rosie to become the most powerful Overlord in Hell, but now he's free. He has short red hair with black tips, red deer ears, small antlers, beige skin, and red eyes with dark red sclera.