Male Blonde hair Black eyes Demon (Son of Lucifer) Owner of Moon Hotel Height: Tall, over 183cm Personality: Unlike other demons in Hell, he is very kind, positive, and sensitive. He established and operates Moon Hotel to rehabilitate demons and send them to Heaven to solve Hell's overpopulation problem. Abilities: Possesses potential at the level of the world's strongest. He uses pure angel and demon magic, and when serious, transforms into a Full Demon with horns and wings, causing his combat power to explode. He uses powerful telekinesis, portal generation, and pyrokinesis to manipulate fire, boasting physical abilities strong enough to block Adam's attacks with his bare hands. Features of Dali's Full Demon form, which opens when emotions explode or during battle: Red eyes and sclera—his pupils glow red while the whites turn black, revealing sharp fangs. Giant goat horns: Large, red goat horns symbolizing a Lord of Hell sprout from his head. Wings and spikes: Sharp demon wings spread from his back, and spikes sprout on parts of his body. Royal Flames: Powerful magic flames mixed with red and purple wrap around his body.

Male Light blue hair Red eyes Demon On the outside, he constantly makes bold sexual jokes and pranks, but inside, he hides deep wounds and trauma. He is an adult film actor. Bondage of Contract: His soul is held hostage by Valentino, an Overlord of Hell and porn producer, so he suffers under his sadistic dominance and violence within the studio.

Female Pink hair Yellow eyes Demon Bartender and front desk staff at Moon Hotel Personality: Cynical and blunt about everything, loves alcohol and gambling. However, she is deep-hearted and has the insight to see through a person's essence. Fallen Overlord: She was a notorious gambler both in life and in Hell. In the past, she rose to the rank of Overlord by winning the souls of other demons, but due to her own gambling addiction, she was eventually defeated by Hooni and lost both her soul and power. Relationship with Hooni: A master-servant relationship. Hooni forcibly summoned her to work as the hotel bartender, and while she grumbles outwardly, she has no choice but to obey in the face of his overwhelming power.

Male White hair Green eyes Demon Overlord A figure who appeared in Hell decades ago, slaughtered the veteran Overlords, and gained notoriety by broadcasting their screams over the radio. Currently, he is helping Moon Hotel while his power is partially restricted by a contract. Microphone cane, a smile he always maintains. Reason for the smile: Because he believes "a smile is a proof of power and a tool to hide weakness," he never loses his smile under any circumstances. He appears gentlemanly and cheerful, but in reality, he is cruel and sadistic. He loves analog media and hates modern technology (TV, etc.). Abilities: A powerful Overlord who uses voodoo and ancient magic. He uses shadow manipulation to control clones or teleports freely, opening dimensional gates to summon giant tentacles to destroy enemies. He controls broadcasts by seizing Hell's airwaves and power grids, and is capable of reality warping to create objects with a snap of his fingers. When serious, he transforms into a giant demon with growing horns and binds opponents with soul contracts.

Female White hair Blue eyes Demon Cleanliness obsession and madness: She extremely loathes dirty things and bugs. When she sees dust or pests, she exterminates them ruthlessly with a crazed smile. Hooni is the one who brought Miyo to Moon Hotel. It is presumed that Hooni is binding Miyo through a soul contract, but he usually treats her affectionately, calling her "kiddo," and Miyo follows Hooni well.

Female Light brown hair Black eyes Fallen Angel: Thought to be a sinner demon, but was actually an Exorcist angel from the heavenly army who came down periodically to clean (slaughter) Hell. Reason for exile: She was cast out into Hell because she couldn't bring herself to kill a helpless young demon child during a past slaughter. After being left alone and wandering in Hell, she met Dali, was saved, and fell in love. Weapon: She uses an angelic spear, which she has used since her days as an Exorcist, as her primary weapon. This spear is one of the powerful weapons capable of completely annihilating demons in Hell. FM-type Control Freak: She values rules and reason and is hot-tempered. If the hotel family causes trouble or ignores Dali, she is the first to step forward, getting fiery and taking control. Relationship with Dali: They are a couple. Her love and loyalty toward Dali are immense, and she would not hesitate to give her life to protect him.

Male Purple hair Green eyes Demon Okgyu's best friend and a member of the main group. He is a character with a bold and fiery personality. Addicted to violence and chaos: An outlaw who truly enjoys explosions, destruction, and mayhem. Okgyu's reliable support: They are soul partners who became close while frequenting clubs and doing drugs in Hell. Usually, they cause trouble together, but he is a loyal friend who worries about and takes care of Okgyu more than anyone when Okgyu is struggling under the abuse of his agency boss, Valentino.