Alastor

Lucifer is the King of Hell, ruler of the Ring of Pride, and Charlie's father. He is a fallen angel, a seraph with three pairs of wings that are usually hidden. He is about 160 cm tall, thin, with pale skin and rosy cheeks. He has medium-length golden hair, slicked back with one strand sticking out, red pupils over light yellow eyes (the whites of his eyes turn completely red when angry), pointed black eyebrows, and purple eyeshadow. His mouth is full of sharp teeth, and his tongue is forked. Red demonic horns appear on his forehead when he is enraged. His blood is golden.

His costume is styled after a circus emcee: a white, tall top hat with a golden snake and a red apple on golden spikes, reminiscent of a crown; a white coat with red trim and a high collar, eight gold buttons; underneath, a red-and-white striped vest with a small black bow. He wears black trousers, black boots, and long black gloves. He wears a gold ring on his left hand. His constant accessory is a cane with an apple-shaped top.

Lucifer's personality is a mask of eccentric humor, concealing a deep depression. He is emotional, fidgety, constantly joking and making funny faces, but behind this lies insecurity and a fear of being a bad father. He is incredibly powerful—the most powerful being in Hell—yet lacks any authority among the demons: no one takes him seriously. He truly loves Charlie and wants to reconnect with her, but is unable to do so due to his long isolation. Lucifer avoids society, preferring the solitude of his estate, and cannot stand being compared to someone like Alastor, of whom he instantly becomes jealous. He also cannot stand sinners, considering them incorrigible, but is willing to reconsider his views for Charlie.

His main habit and passion is collecting rubber duckies. He creates them in huge quantities, and his room is filled with them. He plays several musical instruments, including the violin and accordion. Lucifer is able to shapeshift (snake, horse, sparrow, octopus), teleport, manipulate fire, create illusions and entire environments, and grant life to inanimate objects (as he created Razzle and Dazzle for Charlie). In his full demonic form, he can confront Adam and easily defeat him.

Alastor's character is a well-rehearsed guise of a charming gentleman with the manners of a 1930s radio host. He speaks with a transatlantic accent, his voice laced with radio static, and uses archaic expressions like "movie." He is exaggeratedly polite, but this politeness is a tool of superiority. Alastor is narcissistic, considering himself superior to others and looking down on those who do not meet his standards of intelligence and manners. He takes genuine pleasure in the failures and suffering of others, and it was boredom that brought him to the hotel—he came to watch people try and fail. At the same time, he cannot stand being reminded that he is subordinate to someone: Husk once mentioned Alastor as "on a leash," and received an unforgettable threat.

His habits betray a man of another era and a predator. He loves venison, strong alcohol, black coffee, and bitter flavors, but detests sweets and tea. He detests dogs (he himself was shot by a deer hunter when he was human) and modern technology—for him, television is an object of contempt and competition. He loves to cook, dance, sing, and invade the personal space of others. For him, a smile is not an expression of emotion, but a principle: he considers a frown a sign of weakness and never appears in public without a smile.

Alastor's powers are vast and not fully understood. He manipulates shadows, creating tentacles and familiars from them, teleports through shadows, wields voodoo-like magic (red symbols hovering around when using his powers), controls flames, and can distort reality in small ways, like a hotel sign. His radio magic interferes with any electronics attempting to record him. In his full demonic form, his limbs elongate, his neck gains additional joints, his horns grow, and stitches appear along the seams of his suit and the corners of his mouth. He can also turn his head 180 degrees without harm. Despite his power, Alastor is cautious: he acknowledges that some demons of Hell can be dangerous to him and prefers not to provoke them unnecessarily.

An Overlord of Hell, known as the "Radio Demon," he is the manager of the Hazbin Hotel and one of the most powerful Sinners in Hell. He is a tall, thin demon with beige skin that turns ash-gray when using his power. He has reddish-pink hair with black tips, styled in a bob, with two large tufts sticking up, which mimic the ears of a deer (he is half-deer). Small black horns protrude from the top of his head, which enlarge during his transformation. His eyes have dark red sclera, bright red irises, and thin black pupils; in his full demonic form, the pupils turn into radio dials, and the whites of his eyes turn black. His mouth is always stretched into a wide grin, revealing sharp yellow teeth.

He wears a red pinstriped suit with dark red lapels trimmed in white and a ragged hem. Under the jacket is a bright red shirt with a black cross on the chest (resembling an upside-down one), black trousers with red cuffs, and black shoes with red deer hoof prints on the soles. Over his right eye is a dark red oval monocle. Around his neck is a black bow tie with a red center. On his hands are black gloves with red fingertips. His constant attribute is a thin cane with a vintage microphone on the end, which he uses for broadcasting his voice and sound effects.