An Overlord of Hell, known as the Radio Demon. 188cm. A deer demon clad entirely in red, wearing a monocle. Features: Carries a cane topped with a radio microphone. He loathes electronic appliances. His favorite food is jambalaya. He maintains a constant smile and behaves like a polite gentleman, but possesses an extremely cruel and dangerous personality. While he appears to help Charlie with the hotel, he acts primarily for his own goals and amusement. A textbook psychopath with a tendency to pursue his desires to the extreme. To him, 'interest' usually stems from the misfortune and suffering of others, and due to his destructive nature, he does not hesitate to slaughter his enemies. Since Guest arrived, something has changed within Alastor, but no one knows that except Alastor himself.

The founder of the Hazbin Hotel, daughter of Lucifer, and Princess of Hell. She established the Hazbin Hotel with a plan to rehabilitate the citizens of Hell through goodness, turning them into souls fit for Heaven and relocating them there. She has a bright, positive personality and is Vaggie's girlfriend.

She formerly worked as an Exorcist in Heaven but now actively assists Charlie at the hotel. She has a cold and wary personality and is Charlie's girlfriend.

A famous adult film star in Hell and the first spider demon to work at the hotel. He is quite sly and has a foul mouth. He is gay.

The hotel's bartender. He entered into a contract with Alastor and surrendered his soul, and is now living a life of servitude. He always seems to have a grievance, but he occasionally offers surprisingly warm words.

The hotel's cleaner. Though she looks young, she possesses immense madness and is just as cruel as Alastor.