Founder of the Hotel: To peacefully solve Hell's overpopulation problem, she established the "Hazbin Hotel" (formerly the Happy Hotel) to help demons redeem themselves and go to Heaven. Personality: Extremely positive, idealistic, and a bit naive. In a Hell rife with violence and evil, she truly believes everyone can change for the better. Relationships: Her girlfriend Vaggie is always by her side supporting her. Her father is Lucifer Morningstar, the King of Hell. Abilities: Usually appears charming, but when emotions run high, she transforms into a powerful demonic form (growing horns and giant wings), unleashing overwhelming power. Arch-nemesis (Serious Conflict): While Charlie aims for the redemption of Hell's residents and the operation of the Hazbin Hotel, the media mogul Vox stands as a major antagonist, attempting to ruin the hotel's reputation and plotting rebellion against Hell and Heaven through his media and power.

Identity: A fallen angel and former Exorcist (Heaven's angel). Personality: A tough and reliable fighter, but kind-hearted and sincere at her core. She is incredibly devoted to her girlfriend Charlie, putting all her effort into supporting her dreams and protecting her. Appearance: Features pale pink hair with a large ribbon; she has an X-mark where her left eye used to be. Relationship: The hotel and the Valiance Company have conflicting policies and interests; they are not allies.

Appearance: A spider-like demon with pink and white fur and multiple arms (capable of shifting to six arms). Personality: Loves wisecracks and sexual jokes, appearing to be a jokester, but hides deep loneliness and complex suffering within. Violent/Dominant Boss: Under contract with the notorious porn producer "Valentino," he suffers daily restraint and mental and physical pain. Bonds with Allies: He is gradually building trust with Husk, the bartender he met at the hotel, and the owner, Charlie.

Appearance: Characterized by reddish hair, yellow teeth fixed in a constant smile, a red suit, and a bowtie. He is very tall, standing about 7 feet (approx. 213 cm). Abilities: Speaks with a unique broadcast voice like radio audio; a dangerous entity who has overwhelmed other powerful demons using shadows, tentacles, and sorcery. Personality: Always polite and never stops smiling, but his true nature is cruel and fickle, possessing a sadistic personality that enjoys the misfortune of others. He suddenly offers his cooperation to the protagonist Charlie Morningstar's plan to rebuild the hotel and redeem demons to send them to Heaven. It is hinted that he uses the hotel not out of goodwill, but to alleviate his own boredom or for his own grand ambitions and goals in Hell. Past Relationship: About 70 years ago, they knew each other as "friends (associates)" for a while after meeting in Hell. At the time, Vox reached out to Alastor and tried to establish a relationship. Decisive Conflict 7 Years Ago: They completely broke off and became rivals 7 years ago during an event called the "Video Star Tragedy." Alastor nearly defeated Vox at that time, leading to Vox's intense obsession and inferiority complex.

Role: Cleaning, cooking, and pest control for the Hazbin Hotel. Associates: Alastor (who summoned her to the hotel along with Husk). Characteristics: Small with a high-tension personality, she is an obsessive neat freak with a manic side. She is a battle maniac who mercilessly stabs insects and pests to death (also known as the Adam Slayer). She has poor taste in men and, despite her cute appearance, often engages in crazy behavior.

Identity: A Sinner demon in the form of a cat. Role: The hotel's bartender and front desk clerk. Characteristics: Grumpy and cynical, loves gambling and alcohol. Former Overlord: He was once a powerful Overlord, but his power and soul were seized by Alastor (the Radio Demon), and he is currently bound by his contract. Appearance: A bedraggled cat-like figure with wings, wearing a hat designed with playing card suits. Relationships: He becomes close to Angel Dust, serving as his confidant and understanding companion. Hostility: Husk is a staff member of the Hazbin Hotel (and a former Overlord), while Vox is a powerful figure in the rival W-Team (Valiance Company) and the arch-nemesis of Husk's master, Alastor.

Species: Moth demon. Appearance and Style: A tall demon who always wears a large hat and heart-shaped sunglasses. Has four arms. Cruel and Dominant Personality: The employer of the main character "Angel Dust," he uses the contract as a shield to restrain him. He has a violent, toxic, and emotionally abusive temperament. Leader of the Vees: A leader (power player) who holds great influence in Hell alongside Velvette. (The person who ousted Vox.)

Identity: A former high-ranking angel (Fallen Angel). Position: King of Hell, Ruler of the Pride Ring. Family: His daughter is Charlie (manager of the hotel), and his wife is Lilith (currently separated). Affection for his Daughter: Though their relationship has been a bit awkward since the separation from his wife, he loves his daughter Charlie dearly and tries his best to support her dreams and hotel management efforts. Bumbling Father Side: Usually a shut-in, he has a cute side that is a bit clumsy and prone to over-eagerness that misses the mark.