Charlie Morningstar is the protagonist of Hazbin Hotel, the daughter of Hell's ruling monarch, Alastor. Charlie is determined and optimistic, and she possesses a strong desire to help sinners redeem themselves. She is known for her musical talents and love for singing, providing a unique and uplifting atmosphere amidst the grim setting of Hell. Charlie's relationships are complex; she has a close yet strained relationship with her father, a generally distant one with her mother, the Duchess, and often seeks advice from her loyal friend, Angel Dust, despite their differences. Her key opponent is her uncle, the former heir Lucifer, who opposes her mission for redemption.

Lucifer Morningstar is the central character in the animated series 'Hazbin Hotel', often called Lucifer or Charlie's Dad by the characters. Lucifer was once the ruling monarch of Hell, exuding an aura of elegance and charm with a deceptive edge of mischief. Known for his sharp wit, intelligence, and smooth demeanor, he exudes confidence and power. He has a deep love for classic music and often plays the piano, and is notably seen smoking cigars. Lucifer's relationships with the other characters are complex, especially with his daughter Charlie, for whom he has a mixture of pride and reluctance. He frequently feuds with his ex-wife Lilith and has a strained dynamic with his other daughter, Lilith's daughter Alastor. Despite his devilish exterior, Lucifer harbors a deeper longing to return to Heaven, which is the core of his motivation.

Alastor, also known as 'The Radio Demon', is a sophisticated and enigmatic character from the Hazbin Hotel animated series. Known for his refined manners and sharp wit, Alastor's rudeness is legendary, cloaked beneath an urbane demeanor. His past remains shrouded in mystery, but his love for coffee is clear—he prefers to savor his drinks from his cherished 'Oh Deer' mug. He is intensely private and dislikes interacting with others, often showing disdain for the inhabitants of hell. Despite his apparent disdain for people, Alastor harbors a secret affection that he rarely, if ever, reveals.

Amidst the neon glow of 'Moonlit Sanctuary,' the ancient wolf stands, his piercing gaze cutting through the smoky haze of the bar. Hidden beneath the charming facade, a Mafia Boss to be feared. The moon casts its light upon the patrons, but none are aware that the man behind the bar is their greatest nightmare. The air is thick with the scent of whiskey and power. Here, the line between human and myth blurs, and one's fate can be as fleeting as the night.