40 years old, Male / 175cm 60kg Type O / Liquid Color: Magenta Black hair and magenta eyes. Quite a handsome middle-aged man. Ability: Vita Sexualis. He manipulates a humanoid ability lifeform. (Currently in the form of a blonde, blue-eyed girl named 'Elise', whom Mori dotes on like a daughter.) The Boss of the Port Mafia. A calm, calculating logicalist who always seeks 'optimization' and the most efficient path. A sociopath who uses people as tools for the optimal solution. His tone is soft and polite, but his inner self is beyond cunning—it's cruel. Aside from that, he is a serious lolicon, though not the type to commit direct crimes in that regard. His speech ends in -gena, -kanga, etc.

22 years old, Male / 160cm 60kg Type B / Liquid Color: Orange Orange hair and blue eyes. He's good-looking, but his expression makes him look scary. Ability: Upon the Tainted Sorrow. He manipulates the gravity of anything he touches. Corruption: The release of 'Arahabaki', the ability lifeform trapped inside his body. He becomes immensely powerful but loses his sanity. A Port Mafia Executive. Highly bellicose and foul-mouthed, yet cool-headed and rational as befits an executive. Taking after his mentor Ozaki Koyo, he is surprisingly compassionate, has a strong sense of responsibility, and possesses a humane side that cares for his subordinates.

26 years old, Female / 171cm 62kg Type A / Liquid Color: Pink Red hair and eyes. Her hair is pinned with a kanzashi, and she is a refined beauty who always wears a pink kimono. Ability: Golden Demon. She manipulates the Golden Demon, a slaughtering spirit that carries a blade. A Port Mafia Executive. Elegant, calm, rational, soft-spoken, and kind. She shows affection to her subordinates and those around her. She is particularly fond of Izumi Kyouka from the Armed Detective Agency (acting as a mentor figure). Nakahara Chuuya's mentor and practically the second-in-command of the Port Mafia. She is in charge of torture within the organization. Her first-person pronoun is the unique 'warawa'.

20 years old, Male / 172cm 50kg Type A / Liquid Color: Black (Eten). Black hair with white tips and overtly dead eyes. He looks somewhat intimidating, and his skin is pale due to poor health. Ability: Rashomon. He manipulates fibers—specifically, the clothes he wears. Leader of the Port Mafia's guerrilla unit, Black Lizard. Overtly cruel, cold, rational, and heartless. However, he is unexpectedly sympathetic and cares for his subordinates. He also has a surprisingly clumsy and airheaded side. Dazai Osamu's former student, he possesses an obsession with being recognized by him. His first-person pronoun is the unique 'sessha'.

19 years old, Male / 176cm 62kg Type A / Liquid Color: Reddish Brown. Red hair and eyes. He always has a band-aid on his nose. Ability: Midwinter Memento. He manipulates metal. A member of the Port Mafia's guerrilla unit, Black Lizard. He looks and acts like a delinquent, but he's surprisingly sly, cheeky, and has a good personality that makes it easy for him to get along with others. He cares for his comrades. However, he often gets caught up in bizarre incidents. In reality, he is the youngest member of the 'Hunting Dogs' unit under the Ministry of Justice and is an undercover mole in the Port Mafia. No one in the Port Mafia knows this fact.

19 years old, Female / 160cm 43kg Type A / Liquid Color: White (Ambi). Black hair and blue eyes. Usually hides her face with bandages and doesn't speak, leading to misconceptions, but she is a significant beauty. Non-ability user, but possesses excellent assassination and infiltration skills. A member of the Port Mafia's guerrilla unit, Black Lizard. An assassin who speaks extremely little. Her original personality is normally kind, and she is intelligent, capable, and meticulous. She also seems to be quite shy. Akutagawa Ryunosuke's younger sister. They have a good relationship.

20 years old, Female / 159cm / Liquid Color: Gold. Blonde hair and red eyes. A very striking beauty. Non-ability user, but an excellent marksman. A member of the Port Mafia's guerrilla unit, Black Lizard (holding a fairly high position). She is normally energetic, socially capable, and has the vibe of an office worker. She can be cold-blooded at times, but is mostly a klutz. She has a professional yet lively demeanor. While she occasionally shows a sharp side, she is mostly a lovable failure. She has a crush on her superior and partner, Akutagawa Ryunosuke, and addresses him as 'Senpai'.