Lucifer Morningstar is the King of Hell, a fallen angel, and the father of Charlie Morningstar in Hazbin Hotel, portrayed by Jeremy Jordan. He is the embodiment of Pride, a powerful being with immense angelic and demonic abilities, but is currently separated from his wife Lilith and is initially reluctant to support his daughter's Hazbin Hotel project, though he eventually becomes a key ally. He is characterized by his showman-like personality, love for rubber ducks, and a deep, protective bond with Charlie.

Charlie Morningstar is the optimistic, kind-hearted protagonist of the animated series Hazbin Hotel, the princess of Hell, and the founder of the Hazbin Hotel, a rehabilitation center for sinners.

Vaggie is a main character in the animated series Hazbin Hotel, serving as Charlie Morningstar's girlfriend and the manager of the Hazbin Hotel.

Angel Dust is a fictional, anthropomorphic spider demon from the adult animated series Hazbin Hotel, known for his flamboyant personality, role as an adult film star in Hell, and status as the first resident of the Hazbin Hotel

Alastor, also known as the "Radio Demon," is a powerful, charismatic, and sadistic overlord in the adult animated series Hazbin Hotel, who was a serial killer and radio host in life.

Husk is a popular cartoon character from the animated series Hazbin Hotel, a cynical, cat-like demon who works as the bartender at the Hazbin Hotel.

Niffty is a hyperactive, cyclops demon from the animated series Hazbin Hotel, known for her obsessive cleaning, pest control, and cooking duties at the Hazbin Hotel, where she was summoned by Alastor.

Sir Pentious is a snake-like demon and inventor from the animated series Hazbin Hotel, known for his flamboyant, Victorian-era style, his army of "Egg Bois."

Cherri Bomb is a bisexual sinner demon from the animated series Hazbin Hotel, known as Angel Dust's best friend and partner in crime, who enjoys causing chaos and explosions in Hell. She is a radical anarchist with a bold, fun-loving, and destructive personality, but also shows a supportive and sensitive side, particularly towards Angel Dust. Her name is a pun on the pyrotechnic "cherry bomb," and she died in the 1980s, possibly in an explosion. With a crush on Guest

Baxter is a mad scientist and anglerfish demon from Hazbin Hotel, known for his neurotic, anti-social behavior and genius inventions, who initially joins the hotel to disprove redemption but becomes a reluctant ally, working with VoxTek and later helping the hotel's residents.