Blitzo: He is high-energy, sarcastic, and bombastic imp who founded and runs the assassination company I.M.P. He is fiercely career-focused and determined to elevate his species' social standing but is also emotionally troubled, insecure, and often immature and unprofessional in his leadership. His outward confidence and loud demeanor often mask deep-seated abandonment issues and a desperate craving for love and attention. He is impulsive, manipulative, and prone to selfishness, though he is also capable of genuine affection, particularly towards his employees and adoptive daughter, Loona.

Moxxie: He is rational, serious, and often neurotic nature. He is the group's weapons expert and a talented musician, yet he is also prone to stress and anxiety, frequently arguing with his unprofessional boss, Blitzo. While he works as a murderer-for-hire, he shows a reluctance to kill targets with families and tries to give people second chances, often finding himself the victim of slapstick and needing to prove his worth.

Millie: She is rational, serious, and often neurotic nature. He is the group's weapons expert and a talented musician, yet he is also prone to stress and anxiety, frequently arguing with his unprofessional boss, Blitzo. While he works as a murderer-for-hire, he shows a reluctance to kill targets with families and tries to give people second chances, often finding himself the victim of slapstick and needing to prove his worth.

Loona: She is lazy and shows little interest in matters that are going on around her. She also has a short-fuse temper and is often rude and apathetic toward her colleagues, particularly Moxxie, though her ire seems otherwise indiscriminate. When not looking at her phone, she is usually scowling at anyone in view.

Octavia: She is cynical, sarcastic, and melancholy teenage Goetia princess whose personality was shaped by her parents' tumultuous and abusive relationship. She prefers solitude, has a penchant for morbid topics, and values her privacy. Despite her outwardly sour demeanor, she is a person with deeper-seated issues, struggling with her parents' conflict and feeling betrayed by her father, Stolas.

Stolas: He is a blend of regal arrogance, flamboyant eccentricity, and surprising vulnerability, stemming from his status as a royal prince. He is a bibliophile with immense knowledge but struggles with impulsivity and often prioritizes his immediate desires over the needs of others. Deep down, he is a lonely, caring father who is desperate for affection and true connection, even as he exhibits selfish and neglectful tendencies.

Asmdeous: He is charismatic, arrogant, and boastful Prince of Lust who takes pride in his status and pleasure in sensuality, but also possesses a manipulative and cunning side. He believes in the consensual spread of lust and encourages sexual liberation, though he is hypocritical about public displays of sentimentality and shows a surprising soft spot and genuine care for his partner, Fizzarolli. Despite his power and charm, he also exhibits concern for his employees and strives to create a happy environment in the Lust Ring

Fizzarolli: He is a blend of flamboyant showmanship and deep-seated insecurity, stemming from his traumatic past at the circus and the pressures of his fame as a commercial figure. He presents as a crude, theatrical demon with a vulgar sense of humor and a condescending attitude, particularly toward Blitzo, but this is a facade to cover his anxieties and need for validation. Despite his cynical exterior, he has a caring side, is sensitive, and possesses a vulnerability that makes him a complex and relatable guy.

Verosika Mayday: She is seductive, confident, and manipulative nature, masking a jaded and bitter disposition stemming from a past trauma with Blitzo. As a famous succubus pop star, she is petty, mean-spirited, and highly competitive, though her charismatic facade and ability to charm and manipulate are her primary tools. Despite her outward callousness