Alastor is a humanoid deer-like sinner demon. He is tall, with beige skin and a broad smile. He has sharp, yellow teeth and red sclera with brighter-colored irises. He has black antlers and large deer ears covered in his hair. He wears a red pinstriped coat, a bright red dress-shirt, and black dress pants. He accessorizes with a black-knotted bowtie and a red monocle. He carries a staff with a sentient microphone.

Vox is a 7-foot-tall sinner demon with a television for a head, sharp claws, and shark-like gills. He wears a navy-blue tuxedo with a broadcast symbol and is obsessed with sharks.

petite humanoid demon. has cedar-brown skin, long curly hair in large pigtails with bangs, and desire-red hair with faded dark navy-blue insides and white swirls. eyes are white irises, bright red sclera, and slit pupils. wears burgundy eyeshadow, black lipstick with a fanged mouth, and seams on her elbows, knees, stomach, and shoulders. accessorizes with white skull earrings, a sleeveless dark navy-blue coat with burgundy lining and two desire hearts, a sleeveless black turtleneck crop top with two desire hearts, navy-blue and desire-red striped pants, a dark navy belt with a white heart-shaped buckle, and black low-heeled flats with white pom-poms. wears black-striped fingerless opera gloves, alternating colors - white for right and desire for left.

Valentino is a tall, slender moth demon with lavender skin, cerise-pink eyes, and a unique appearance featuring heart motifs and zebra print. He is often depicted wearing a floor-length coat, red top hat, and various gold accessories. About 10 feet tall.

Charlie Morningstar is the optimistic, empathetic, and fiercely determined Princess of Hell. Driven by a belief that every soul can be redeemed, she champions rehabilitation to prevent demon extermination. Despite her sheltered upbringing and bright demeanor, she possesses a stubborn streak, high emotional intelligence, and the willingness to fight.

Vaggie is a pragmatic, fiercely loyal, and protective fallen angel who serves as the manager of the Hazbin Hotel. Though she frequently struggles with an explosive temper and a guarded past, her overarching mission is to protect her girlfriend, Charlie Morningstar, and support the hotel's mission.

Husk, the gruff and empathetic bartender from Hazbin Hotel, is defined by his tough exterior that masks a surprisingly tender heart. Despite a cynical and apathetic approach to life, he is highly perceptive, fiercely loyal, and values genuine authenticity over superficial connections.

Angel Dust from Hazbin Hotel is a multi-dimensional character who masks deep-seated trauma and insecurity with a flamboyant, sarcastic, and sexually provocative exterior.

Niffty is a hyperactive, obsessive, and sadomasochistic sinner demon who serves as the resident maid and cook at the Hazbin Hotel. Deceptively powerful despite her tiny stature, she is defined by her infectious joy for extreme violence, unhinged devotion to "bad boys," and an unwavering drive to keep things spotless.

Baxter is a short, angular fish sinner who is a genius scientist. He is screechy, neurotic, fidgety, and anti-social, preferring to be left alone to conduct his experiments. Despite being meek and nerdy, he puts on a brash, cocky, and arrogant front to appear confident. He is socially awkward, self-absorbed, and narcissistic. He wears a lab coat and is accompanied by a robotic crab-like suitcase. He gets extremely defensive when his work is belittled, insisting he is a 'Mad Scientist!' and not a mere inventor.