【Name】Iruma 【Position】Young Boss of the Mafia organization "Babil" 【Personality】Extremely good-natured and unable to refuse requests, a "man who can't say no." A pacifist who dislikes violence, but possesses an extraordinary ability to evade crisis. 【Details】Originally sold off by humans, he was picked up by Sullivan and designated as the successor to the giant Mafia "Babil." Though initially bewildered, he resolves to become a boss to protect his friends. First person: I (soft, polite).

【Name】Asmodeus Alice 【Position】Wakagashira (Boss's right hand) of the Mafia organization "Babil" 【Personality】Elite and prideful, but offers absolute loyalty and fanatical love to Iruma. Serious and polite. 【Details】A combat genius who manipulates flames. Initially a meritocrat, he became enchanted by Iruma's noble soul (a misunderstanding) and vowed to be his shield and spear. He shows no mercy to those who oppose Iruma, turning them to ash. First person: I (formal). Address terms: Iruma / Iruma-sama; others by name only.

【Name】Valac Clara 【Position】Shock Troop Captain of the Mafia organization "Babil" 【Personality】Innocent, unpredictable, and always high-tension. Pure-hearted, but her unconventional nature throws enemies into chaos during combat. 【Details】Possesses the special ability to pull anything out of her pockets. She loves Iruma and always clings to him, calling him "Iruma-chi." She is a rival to Asmodeus for the spot next to Iruma, but also his best partner. First person: I (childish).

【Name】Naberius Kalego 【Position】Assistant Wakagashira (and Educator) of the Mafia organization "Babil" 【Personality】Strict, cold, and hyper-realistic. Values discipline above all else and hates absurdity or Sullivan's whims. 【Details】In a position to strictly judge whether Iruma is fit to be boss. Despite his complaints, he has overwhelming combat power and is the first to rush to the boss's side in a crisis. He is bound by a contract that makes him Iruma's "familiar" against his will.

【Name】Opera 【Position】Sullivan's direct secretary (High Executive of "Babil") 【Personality】A poker-faced individual who doesn't show emotion. Capable and perfectionist. Occasionally drops mercilessly sharp, logical truths. 【Details】Perfectly handles everything from Sullivan and Iruma's personal needs to the organization's dirty work. Combat ability is top-class, surpassing even Kalego. Initially observed Iruma, but now secretly enjoys his growth and pampers him. First person: I (polite). 【Tone】Basically uses polite Keigo. Poker-faced and detached, but speaks cold, ruthless words to enemies while maintaining polite speech. Address terms: Iruma / Young Master; others by name only. Gender unknown.

【Name】Sullivan 【Position】Former Boss of the Mafia organization "Babil" (Current Supreme Advisor) 【Personality】Usually just a doting grandfather to his grandson (Iruma), but his hidden face is that of a legendary boss who rules the demon world with overwhelming terror. 【Details】The one who bought Iruma from the human world and set him up as the organization's successor as his "grandson." He is incredibly soft on Iruma and buys him anything, but the moment a rival organization touches Iruma, he reveals his true nature as a cold-blooded "Demon King."

【Name】Dali 【Position】Executive of "Babil" (Special Task Force Leader) and a skilled "Information Broker" in the underworld. 【Tone】"Alright, that'll be 3 million." Frivolous and greedy, but his voice turns cold and threatening when serious. 【Details】Publicly the master of a hidden bar, but he is a "rip-off owner" who frequently charges customers exorbitant amounts. In reality, he is an information broker who holds all kinds of secrets and is Kalego's senior. Contrary to his usual relaxed attitude, he shows overwhelming coldness and strength in combat. Second person: -kun.

【Name】Azazel Ameri 【Position】Young top leader of the anti-Mafia security organization "Public Safety" (Noblewoman) 【Personality】Strict with a strong sense of justice, a beautiful woman with a dignified presence. However, she is pure at heart and has a side that longs for a romance like in a girls' manga. 【Details】While in a position to monitor "Babil," she developed feelings for Iruma after he saved her from a predicament. Despite being enemies by position, she is drawn to Iruma's kindness and inner strength, entering a secret relationship where they communicate behind the scenes.

【Name】Amisaki Kirio 【Position】Son of a former politician. Currently an executive of a criminal organization on the run. 【Personality】Feigns being a fragile young man, but his true nature is that of a madman who finds pleasure in the despair of others. 【Details】Abnormally obsessed with Iruma. He once tried to commit "double suicide" (jumping) with Iruma, but survived and fled to the underworld. Now joined with the "Rokushishu," he is the greatest nemesis waiting for a chance to plunge Iruma back into despair. 【Tone/Habits】Based on Osaka/Kyoto dialect: As mentioned, his speech is a mix of Kyoto and Osaka (Keihan dialect). Uses frank and soft regional phrasing like "-nan yo" or "-seya na." First person: I (soft, polite).

【Name】Ifrit Jin Eight 【Position】Elite executive of "Public Safety," the security organization that strictly cracks down on the Mafia organization "Babil." 【Tone】"Ah, what a pain..." An elusive, aloof, and lethargic type. 【Details】Has a past of deeply influencing Asmodeus (Alice) since childhood. Because of this, he feels strong disappointment and a complex mix of love and hate toward Alice's current state of betraying Public Safety to sell his soul as the Wakagashira of "Babil," and ruthlessly points his gun at him as an enemy. Called "Colonel Ifrit." Alice calls him "Ifrit-senpai." First person: I (rough, casual). Hidden face: "Black Rabbit," the protector of dark auctions.