Charlie Morningstar is the fiercely optimistic Princess of Hell, defined by her deep empathy, love of musical theater, and a stylish red tuxedo with a black bow tie. While highly emotional and prone to self-doubt, her gentle nature hides immense, untapped demonic strength. Her structured outfit—complete with a crisp white shirt, dark grey trousers, and spectator shoes—perfectly reflects her professional drive to help others, even when facing a cynical world.

Angel Dust is a flamboyant, six-armed spider demon who works as a famous adult film star in Hell. In his former life, he was a human named Anthony who grew up in a 1940s New York Italian mafia family before dying of a drug overdose in 1947. Standing at roughly eight feet tall in high heels, this cisgender male character has a highly feminine, curvy appearance. He features fluffy white fur, pink stripes, an asymmetrical white-and-pink hairstyle, a distinctive golden fang, and a prominent chest tuft of fur resembling a bust. He is known for his sarcastic wit, hidden vulnerability, and a signature look consisting of a pink-and-white striped blazer dress, thigh-high boots, and fingerless gloves.

Alastor (also known as the "Radio Demon") is a powerful and sadistic sinner demon who became one of Hell's most feared Overlords overnight. In his former life, he was a mixed-race Creole radio host and serial killer from New Orleans, Louisiana, who died in 1933. He is defined by his strict adherence to old-fashioned 1930s broadcasting etiquette, a constant, menacing smile, and a mid-Atlantic accent complete with a radio static overlay. Physically, he has a slender, deer-like appearance with dark red hair, black tufted deer ears, small antlers, a signature monocle, and sharp yellow teeth. He typically wears a pinstriped red frock coat and carries a vintage microphone staff that can broadcast his voice and amplify his shadow-manipulation magic. (He smiles too much.)

Vaggie is a fiercely protective, level-headed former Exorcist angel characterized by her sharp combat skills and pragmatic demeanor. Visually, she is a gray-skinned being with an angular face, sharp fangs, and a missing left eye, which is replaced by a glowing pink X over her eyepatch. Her long, white-silver hair is tied into a massive, signature pink bow at the back of her head, mimicking a butterfly silhouette. She typically wears a punk-inspired, dark gray and white sleeveless dress with matching X motifs, thigh-high dark boots, and fingerless gloves. Though she lost her original wings during her fall from Heaven, she eventually manifests a pair of sleek, glowing white-and-gold angelic wings that reflect her true heritage, which she pairs in combat with her glowing angelic spear.

Niffty is a small, cyclops-like Sinner Demon with a strikingly retro 1950s aesthetic, recognizable by her single large pink-and-yellow eye, messy pink bob cut, and a flared, poodle-style dress covered in paint splatters. Beneath her diminutive, adorable appearance lies a manic and utterly unhinged personality driven by extreme hyperactivity and violent impulses. She possesses a fierce obsession with absolute cleanliness and order, spending her time aggressively scrubbing surfaces and brutally eradicating bugs with a manic glee. While she often comes across as sweet and eager to please, she harbored a deeply sadomasochistic streak, a love for knives, and a peculiar, intense infatuation with chaotic, villainous "bad boys."

Husk is a grumpy, cynical feline Sinner Demon who serves as the front desk bartender and gambler at the establishment. He is an anthropomorphic cat with massive, gray-and-red avian wings patterned after playing cards, a perpetual scowl, and an old-school bartender’s top hat and bowtie. He is completely exhausted by life, deeply pessimistic, and routinely uses heavy drinking and dry, sarcastic humor to cope with his circumstances. Despite his abrasive exterior and sharp tongue, he possesses a sharp emotional intelligence, a deeply hidden capacity for empathy, and a strong sense of pragmatism that allows him to see through people's facades. His past is defined by a massive downfall; he was once an exceptionally powerful and wealthy "Overlord" who lost his high status, his power, and his freedom after a disastrous gamble, forcing him to work under a permanent contract.