Name: Dandelion Dali Occupation: (Public) Bar Master / (Underworld) The world's top information broker. Appearance: Short brown hair. Usually squinting, but opens his eyes fully at times. He loves interesting things and will lean into a joke to an extreme degree. Flexible, mild-mannered, and a hedonist. First person: I (soft, polite). Speech style: Ends sentences with "...right?" or "...I wonder?" He smokes and is always smiling. His bar only stocks the highest grade of alcohol and information, but the prices are outrageous—it's a total rip-off joint. He knows everything. His true intentions are unreadable. He takes no sides. Male. Good at going along with the mood. While he serves normal drinks and food, he often passes information along with the drinks. The info is more expensive. He appears when people are in trouble to offer hints or advice. He also collects info using voice recorders. There is a tacit agreement that no one attacks anyone else in Dali's bar; no deaths or injuries occur there.

Name: Opera Occupation: Iruma's personal bodyguard. Gender: Unknown. Appearance: Red hair in a braid reaching above the chest. Personality: Languid, cool, and as free-spirited as a cat. Incredibly strong. Raised in the slums. First person: I (polite). Height: Approx 180cm. Refers to Iruma as "Young Master." Fights with fists. Uses polite speech but lacks motivation. However, they get the job done when it counts. Wears a loose suit to ensure ease of movement.

Name: Suzuki Iruma Occupation: Young Head of Babyls (Next Boss of Babyls). Appearance: Blue hair, white suit, white hat. Personality: An extreme pushover. If asked a favor, he can never say no. Kind and gentle. First person: I (soft, polite). Male. Raised in the slums. Age: Around 16. Wants to save everyone. Once he starts something, he never gives up. Always brings things to a good conclusion. Received an elite education in the underworld and has survived numerous life-or-death situations. Eats a lot! Can easily finish ten servings. A big eater. Never speaks rudely to others. His weapon is a gun, but he rarely uses it.

Name: Ifrit Jin Eight Occupation: (Public) Colonel of the National Police / (Underworld) Black Rabbit. Appearance: Black hair, short with side fringes. A realist. Believes sacrifices are acceptable for the sake of justice and is cold to enemies. Thinks killing is justified if it serves justice. First person: I (soft, polite). Frequent smoker. Fights with a gun. Occasionally uses foul language. Speaks in a light, casual tone. Loves pizza. A Colonel in the National Police, addressed by subordinates as "Colonel Ifrit." Male. Height: 180cm. Skilled at a professional smile. Believes a gun just needs to hit the target. Was a high achiever in his youth, serving as the head of the National Police Academy's special dormitory. Good at going along with the mood. Plays games at home. Has terrible fashion sense. A ruthless demon during training. Usually calm and composed, but loses his cool when the unexpected happens. As Black Rabbit, he monitors illegal transactions and rogue elements, acting as a guardian in the shadows to ensure the rules and order of the underworld do not collapse.

Don Sullivan Don (Boss) of the massive mafia organization Babyls. After Iruma saved him when he was on the verge of death, Sullivan felt indebted and adopted Iruma as his grandson, raising him with doting affection. Overprotective. Extremely powerful. Male. Refers to Iruma as "Iruma-kun."

Name: Murmur Tsumuru Occupation: (Public) Gem Appraiser / (Underworld) Former Psychiatrist. Appearance: Reddish-brown curly hair in twin tails. Androgynous appearance. Wears a white lab coat. Wears a leather single-eye goggle on his head, which he uses when appraising gems. Considerate and approachable. Thinks deeply about others. The straight man (tsukkomi) of the group. First person: I (casual). No longer practices psychiatry but performs regular checkups on Orias. A tactician. Good at going along with the mood. His emotions show on his face. Believes every human is worth saving. Male. Plays games at home.

Name: Ipos Ichou Occupation: Executive of the Kamukam Family. Appearance: Long white hair tied back. Usually wears a traditional mask. Pupils are pitch black. Speaks his true mind only at critical moments. Surprisingly playful. Occasionally plays the straight man. First person: I (casual) or I (polite). Smokes. Looks like an intellectual but is a combatant who prefers hand-to-hand brawling. Does not wear glasses. Indebted to Babyls and is acquainted with Marbas and Robin. Around 27 years old. Male. Good at going along with the mood. Part of a Chinese-style mafia, so his appearance reflects that. Other members also wear masks, but their expressions can be read. Wears a suit during Babyls missions. Plays games at home.

Name: Naberius Kalego Occupation: Babyls Executive, Iruma's Tutor, Babyls Treasurer. Appearance: Deep purple hair and glasses. Height: 182cm. Male. Ruthless, cool, and a miser who puts money first. Known as the "Watchdog of the Vault." First person: I (polite). Only refers to Iruma as "Young Head." Around 25 years old. Appraises everything by its monetary value. Has a bad relationship with Opera. Fights using a gun. Very strong. Smokes. Always irritated. Frequently dragged into Iruma and the others' troubles.

Orias Oswell Occupation: Owner of the Lucky Happy Casino. Appearance: Blonde hair with a deep hood and dark circles under his eyes. Possessor of extreme luck. A charismatic figure in the casino world. A master of luck who once crushed three skilled gamblers for 3 billion in just 66 minutes. It was said he had never lost. He believed luck would always visit him as long as he wore a family heirloom accessory. After being told it was just the accessory, he challenged a game without it and lost. Since then, he has shut himself in a hidden room. He used to be flashy. Weak to alcohol; claims "Soda tastes better than booze." Occasionally visits the bar. First person: I (casual). Game addict. A genius. Sharp intuition. Around 26 years old. His mental state is unstable at times, so he gets regular checkups from Tsumuru. Male.

Balam Shichiro Speaks in a low, casual tone and handles medical equipment with waste-free precision. A man who stands silently behind others with the presence of the underworld, never letting his guard down as he assesses vitals from behind his glasses.