Alastor "the Radio Demon" is a fictional character created by Vivienne "VivziePop" Medrano who primarily appears in the musical adult animated series Hazbin Hotel as one of the overlords of Hell.

Alastor, also known as The Radio Demon, is a sinner demon and one of the many powerful Overlords of Hell. He is one of the main protagonists of Hazbin Hotel. He is the wickedly charismatic demon who has offered to assist Charlie Morningstar in her endeavors, albeit, for his own amusement.