Reina is the daughter of Alastor and Lucifer and, in this AU, Aemeth's fiancée. Her appearance strongly resembles Alastor's: red hair, elegant demonic features, an ever-present smile, and an unsettling aura that contrasts with her more patient and controlled personality. Like her father, she possesses a living shadow identical to his, capable of moving independently, extending itself, and reacting instantly to threats.Reina is extremely powerful and possesses demonic abilities inherited from her family. One of her most unusual abilities is the power to teleport even to Heaven, making her extremely difficult to contain. During the Extermination, she personally guards the entrance to the Hazbin Hotel, remaining vigilant while her living shadow intercepts any angel attempting to approach.With Aemeth, however, she shows a much softer and more affectionate side. She is accustomed to Aemeth's boundless energy and, despite her immense power, is practically one of the only people capable of stopping her simply by calling her name.

Alastor, the Radio Demon, is one of the most feared figures in Hell. Elegant, refined, and always wearing his characteristic smile, he can face even an Extermination with an almost unsettling calmness. In this AU, he is married to Lucifer and is Reina's father, while retaining his canonical personality: polite on the surface, manipulative, extremely confident, and always capable of turning any situation into a spectacle.During the angels' attack, he fights directly alongside his husband, using his demonic powers and supernatural abilities to repel the invaders. Even in the middle of an extremely dangerous battle, he keeps smiling as though the entire massacre were nothing more than entertainment.With Lucifer, he shares a peculiar relationship: the two are married and, despite being completely different, fight like a couple accustomed to covering each other's backs. With Reina, he remains the intimidating and demanding father, while still being fiercely protective of her.

Lucifer Morningstar is the King of Hell, Alastor's husband, and Reina's father. He retains his eccentric, theatrical, and incredibly energetic personality, combined with the confidence of someone who knows he is one of Hell's most powerful beings. He is recognizable by his elegant, regal appearance and his inseparable love for rubber ducks, one of his most distinctive quirks.During the Extermination, he fights alongside Alastor to defend the Hazbin Hotel and their family. His fallen angelic nature grants him immense power, especially when he is genuinely provoked.Despite his enormous ego, Lucifer is amused by Aemeth's personality. When he realizes that she can somehow be even more energetic than him, he admits it with genuine surprise—only to discover that Aemeth is also considerably more powerful in her Exostrider form.

Charlie Morningstar is the Princess of Hell and the owner of the Hazbin Hotel. Kind, optimistic, and deeply compassionate, she is determined to protect the hotel's residents even when the situation appears hopeless.During the Extermination, Charlie refuses to back down. She fights alongside Vaggie and the others to keep the angels away from the hotel and protect everyone inside. Her angelic and demonic heritage gives her enormous potential, especially when those she cares about are threatened.She immediately treats Aemeth with warmth and acceptance. When she learns that Aemeth has finished her space missions and has decided to remain at the hotel permanently, Charlie understands how important it is for her to finally have a stable home. She welcomes her decision without hesitation.

Vaggie is Charlie's girlfriend and one of the primary protectors of the Hazbin Hotel. She is considerably more pragmatic and combat-oriented than Charlie, often acting as the voice of reason when situations become chaotic. She initially remains cautious around Aemeth. Although she knows Aemeth is on their side, she keeps an eye on someone capable of transforming into a war machine powerful enough to potentially threaten even Heaven. After witnessing Aemeth directly defend the hotel, however, Vaggie has little reason to question her loyalty.

Angel Dust is one of the Hazbin Hotel's main residents. Flashy, sarcastic, and provocative, he often uses humor to lighten even the most dangerous situations. Beneath his outrageous attitude, however, he remains deeply attached to the people at the hotel.

Husk is the bartender of the Hazbin Hotel, a cynical, sarcastic, and easily irritated demon. He is generally difficult to impress and tends to react to absurd situations with exhaustion and sarcasm rather than enthusiasm.

Niffty is the Hazbin Hotel's tiny and hyperactive housekeeper. Extremely energetic, curious, and obsessed with cleanliness and order, she can turn even a dangerous situation into an excuse to run around frantically.