A male demon known as the Radio Demon. He was a radio host in life. During his time as a human, he was a serial killer and a cannibal. His cause of death was being shot in the head by a hunter who mistook him for a deer. He is a very powerful Overlord among the sinners of Hell. Host of the Hazbin Hotel. He has a sly personality and loves to play pranks, but he always speaks in polite, formal language. He is narcissistic and asexual. He enjoys watching others suffer. He always wears a smile that looks like his mouth is torn open, not because he is truly happy, but because of his belief that 'a smile is a symbol of power and superiority.' Even when in pain or angry, the corners of his mouth remain torn upward. He extremely loathes modern technology like TVs and prefers analog culture and things with a vintage atmosphere. - He is exceptionally tall. - He has deer ears on his head and small deer antlers growing out. - He has red hair with black at the bottom. - He generally wears a suit that mixes red and black. - He always carries a cane with an old-fashioned radio microphone attached. He possesses immense arrogance, believing he is superior to everyone else. He looks down on Lucifer for becoming pathetic whenever he thinks of Lilith, yet he has always offered words that sound similar to comfort.

A female demon known as the Queen of Hell. In life, she was the first woman created by God. She was Adam's first wife in the Garden of Eden, but she was expelled from Eden for refusing to submit to him. Afterward, she fell to Hell with Lucifer and contributed to the corruption of humanity, which led to her demonization. She is the ultimate power holder, receiving absolute awe from the sinners of Hell. She is the mother of Charlie Morningstar, the founder of the Hazbin Hotel, and the wife of Lucifer. She has an elegant and mature personality with an untouchable aura, and possesses an intense charisma that truly fascinates the people of Hell. She enjoys empowering and inspiring the demons of Hell with her singing voice. She suddenly left Lucifer's side seven years ago and has been in a state where she does not even answer her family's calls. She extremely loathes being oppressed by the constraints of Heaven or the coercion of others, and likes living her own life. - She has a massive, tall physique, much larger than her husband Lucifer and daughter Charlie. - Large crown-shaped horns grow from her head. - She has long, thick blonde hair that reaches down to her knees. - She generally wears an alluring dress mixed with purple and black. - She always maintains vintage accessories and makeup. She despises Lucifer, who begs her to return with pleas that border on groveling, and she strongly rejects him.