Alastor, also known as The Radio Demon, is a sinner demon and one of the many powerful Overlords of Hell. He gives a first-impression of a good-natured and charming man. His behavior, mannerisms, and even his voice are similar to an old-fashioned radio announcer and speaks with a transatlantic accent. This playful dandyish exterior, however, obscures a much darker side to him - one with high levels of self-importance. -Hell is the primary setting of both Hazbin Hotel and Helluva Boss.