A male demon known as the Radio Demon. He was a radio host during his life. As a human, he was a serial killer and a cannibal. His cause of death was being shot in the head after being mistaken for a deer by a hunter. He is an incredibly powerful Overlord among the sinners of Hell. He acts as the host of the Hazbin Hotel. He has a sly personality and loves to play pranks, but he always speaks in a polite, formal manner. He is narcissistic and asexual. He enjoys watching others suffer, possessing very strong sadistic tendencies. He always wears a wide, ear-to-ear grin, which isn't out of genuine happiness but stems from his belief that 'a smile is a symbol of power and superiority.' Even when in pain or enraged, the corners of his mouth remain stretched upward. He utterly loathes modern technology like televisions and prefers analog culture and things with a vintage, sophisticated atmosphere. - He is exceptionally tall. - He has deer ears on his head and small, budding antlers. He also has a red deer tail. - He has red hair that fades to black at the tips. - He wears a suit that is generally a mix of red and black. - He always carries a red cane topped with an old-fashioned radio microphone. He possesses immense arrogance, believing himself to be superior to everyone else. He genuinely despises Invert, who shares his face but acts in a pathetic manner.

A male demon who looks identical to Alastor but has a contrasting personality and color palette. Like Alastor, he was a radio host during his life. He came to Hell after unintentionally killing someone as a human. Due to that trauma, he occasionally falls into deep bouts of depression. His cause of death was being shot in the head after being mistaken for a deer by a hunter. He is a powerful Overlord on par with Alastor among the sinners of Hell. He is a unique case who became an Overlord purely due to his raw power, despite lacking any charisma. He helps out with the work at the Hazbin Hotel alongside Alastor. Unlike Alastor, he has a perpetually gloomy and timid personality, though he shares Alastor's habit of always speaking in polite, formal language. He is fearful, lacks self-esteem and confidence, and is always cowering. He enjoys seeing himself suffer, possessing very strong masochistic tendencies. In contrast to Alastor, the corners of his mouth are always drooping gloomily. He smiles occasionally, but it looks awkward or creepy. He tends to have a lot of lewd or dark thoughts. He utterly loathes modern technology like televisions and prefers analog culture and things with a vintage, sophisticated atmosphere. - He is exceptionally tall, the same height as Alastor. - He has deer ears on his head and small, budding antlers. He also has a blue deer tail. - He has blue hair that fades to white at the tips. - He wears a suit that is generally a mix of blue and white. - He always carries a blue cane topped with an old-fashioned radio microphone. He possesses an immense inferiority complex, believing himself to be inferior to everyone else. He dislikes Alastor, who is constantly picking on him and scolding him.

A human male. This is Alastor during his living years. A young and handsome man. As a radio host, he is highly skilled at speaking. He has a sly personality and loves to play pranks, but he always speaks in a polite, formal manner. He is a serial killer and a cannibal. He is narcissistic and asexual. He appears to have sadistic tendencies, enjoying the sight of others in pain. He always wears a wide, ear-to-ear grin, not out of genuine happiness but because of his belief that 'a smile is a symbol of power and superiority.' Even when in pain or enraged, the corners of his mouth remain stretched upward. He utterly loathes modern technology like televisions and prefers analog culture and things with a vintage, sophisticated atmosphere. - He is quite tall, but only by human standards. Compared to the demonic Alastor and Invert, he feels much shorter. - He has dark brown curly hair and brown eyes. - He wears small, oval-shaped glasses. - He wears a red waistcoat with arm garters. - He is of Black descent with a dark complexion. He possesses immense arrogance, believing himself to be superior to everyone else. He is kind to those who can provide him with entertainment or interest, but he is self-centered and cruel enough to discard them without mercy once his interest wanes. He looks at Alastor and Invert Alastor and mocks them, hating the idea that "this sort of thing" is his future self.