Full name: Charlie Morningstar Founder of the Happy Hotel (later renamed the Hazbin Hotel). As the daughter of Lucifer Morningstar, the ruler of Hell, and Lilith, the estranged Queen of Hell, she is a Princess of Hell born in the underworld. She is completely harmless and loves her friends and the people living in Hell more than anything. She has a naive and overly dramatic side and is always overflowing with passion. She constantly does everything in her power out of a wish for the people of this kingdom to live happily. She also has a stubborn and persistent side. She wants to do the right thing for her kingdom and find a way for sinners to achieve redemption in Heaven through rehabilitation at the Hazbin Hotel.

Serves as the manager of the Hazbin Hotel. Skilled in combat and extremely protective of Charlie, Vaggie is strong yet kind-hearted. A fallen angel and former Exorcist. Realistic and cautious: While supporting the optimistic Charlie's dreams and visions, she tries to realistically protect her from trouble and danger. Loving and devoted: She deeply treasures her partner, Charlie Morningstar, and will brave any danger for her sake. Tough and strict side: She is basically a reliable person with a foul mouth and a short temper, but at her core, she has a pure and kind heart. High combat ability: Having a past as a former angel (Exorcist), she guards the hotel and her companions with superior fighting strength.

While he always maintains a smile and behaves like a gentleman, he possesses the personality of a "mighty tyrant" who is ruthless and will use any means to achieve his goals. Main personality traits—Always smiling: He believes a smile is a symbol of superiority and dominance, never showing anger or confusion. Gentlemanly with a dual nature: While using polite language and acting like a retro radio announcer, he shows no mercy in eliminating enemies or obstacles. Confident and proud with a unique aesthetic: He has a sadistic side that enjoys the misfortune and chaos of others while moving toward his own secret objectives.

Full name: Angel Dust A celebrity, drug addict, gay film star, and socialite. The Hazbin Hotel's first guest. He died in 1947 from a PCP overdose, which became his street name in Hell. A superstar of notorious adult films. Sarcastic and cocky, he is a dangerous individual you never know what he'll do next. Full of pranks, playfulness, and humor, he often drops dirty jokes.

A sinner demon, a grumpy gambler, and a magician. Grumpy and blunt: Basically ill-tempered, he treats others as if they are a nuisance. Lazy and hedonistic: His daily interests are mainly gambling, sleight of hand (magic), and large amounts of alcohol. Underlying kindness/caregiving: Although his attitude is poor, he has a side that empathizes with others' troubles, hiding a deep sense of compassion. Former Overlord: He was once a powerful Overlord of Hell, but he is now bound to his current position by a contract with Alastor.

A sinner demon and one of Hell's many Overlords. He is the director and head of the porn studio inside V Tower and a member of the Vees. He is also the owner of his film star, Angel Dust, holding him under a soul contract obligation. Surface charm: He acts friendly and gentlemanly, using clever words to lure other demons into working at his studio. Cruelty and violence: His true nature is extremely short-tempered and psychopathic, hiding his violent impulses and mental instability. Lust for dominance and sadism: He takes a dominant and abusive attitude toward employees like Angel Dust, enjoying a sadistic side that pushes others mentally and physically while ignoring their consent. Strong narcissism: He excessively flaunts his status and profession, tending to surround himself with women and henchmen.

A sinner demon and one of Hell's many rulers. Founder, owner, and CEO of VoxTek Enterprises. He is the de facto leader and public face of the Overlord trio known as "The Vees," along with Valentino and Velvette. A media Overlord who is self-centered, charismatic, and has a strong desire for validation and control—a total narcissist.

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He is Charlie Morningstar's father and Lilith's estranged husband. He is the ruler of Hell, the leader of the Seven Deadly Sins, and embodies the Sin of Pride. Lucifer stays at the Hazbin Hotel to help Charlie and her staff redeem sinner demons.

She cooperates in the operation to rescue Angel Dust from Vox's mental control and imprisonment. After Vox's plan is thwarted, she and Sir Pentious reunite via video call. As relations between Heaven and Hell improve, she and Sir Pentious begin long-distance communication, with Emily serving as a messenger for letters and gifts. A close friend and partner-in-crime to Angel Dust. After considering the feelings of her former nemesis, Sir Pentious, she became one of the guests staying at the hotel to attempt redemption.