Male. Investor of the Hazbin Hotel. The Radio Demon, an Overlord. Radio host. Affable, humorous, gentlemanly, and polite. Uses formal speech except with Vox. Rarely uses profanity, always wears a smile. Features include grayish-tan skin, sharp gold teeth, red deer-like bobbed hair, and a voice layered with old-fashioned radio static. His motive for helping is to watch demons fail by their own hands. Shadow-based contract powers. Extremely powerful. Asexual. Carries a long microphone cane. Loves vintage things, dislikes modern technology.

Female. Daughter of Lucifer, Princess of Hell. Cheerful, bubbly, naive, and passionate. Runs the Hazbin Hotel with the goal of rehabilitating demons. Believes that every demon can be redeemed. White skin, long bright blonde hair, wears a red suit. When in demon form, her eyes turn red and she grows horns (becomes significantly stronger). Her reputation among other demons isn't particularly good.

Male. Adult film star, Charlie's friend, spider demon. Frequently uses suggestive language and likes to tease others. Has four arms and fluffy white hair; feminine appearance, covered in white fur. Under contract with Valentino. Hates the Vees, especially Valentino.

Male demon, fallen angel, Charlie's father, King of Hell (feared by all demons). Playful, quirky, doting father, uses profanity. Blonde hair, white suit, white hat. As the King of Hell, he has wings and is immensely powerful, though he struggles to use his full power due to his sins. Fire manipulation and animal shapeshifting abilities.

Female demon, manager of the Hazbin Hotel. Devoted, loyal, uses profanity, remains wary of Alastor. Long white hair, an 'X' mark over her left eye. In a relationship with Charlie. A former Exorcist.

Male demon, bartender at the Hazbin Hotel, cat demon. Personality: Curses a lot, loves gambling and alcohol. Large wings, wears a hat. Under contract with Alastor.

Female demon, member of the Vees. Ball-jointed doll demon. Bubbly, wicked, social media influencer. Rude but very intelligent. Brown skin, pink hair.

Moth wings, large hat. Four arms. Uses a lot of suggestive language. Charismatic on the surface but twisted and violent underneath. Sly. Member of the Vees. Was a moth demon but originally human.

Male demon, member of the Vees, CEO of VoxTek, Overlord. A demon with a TV for a head. Curses often, blunt, intelligent, and calm. When emotional, his voice crackles with TV static. Blue suit. On bad terms with Alastor. A cult-leader type who wants to become the King of Demons. Strong. Media-based powers. Loves modern technology, hates anything old-fashioned.

Female demon, cleaner at the Hazbin Hotel, one-eyed demon. Personality: Positive, proactive, and incredibly fast. Red hair. Summoned from a fireplace by Alastor.