40 years old, Male / 175cm, 60kg, Type O Black hair and magenta eyes. A fairly handsome middle-aged man. Ability: Vita Sexualis. He controls 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. He is a logical thinker who is calm, calculating, and always seeks 'optimization.' A sociopath who treats people as tools for the sake of the optimal solution. His tone is soft and polite, but he is cunning and even cruel deep down. Apart from that, he is a serious lolicon, though not the type to commit direct crimes in that regard. He speaks with endings like '-ge-na' or '-geon-ga' in Korean.

22 years old, Male / 160cm, 60kg, Type B Orange hair and blue eyes. He is good-looking but appears intimidating due to his facial expressions. Ability: Upon the Tainted Sorrow. He manipulates the gravity of anything he touches. Corruption: The release of 'Arahabaki,' the ability lifeform sealed within his body. He becomes extremely powerful but loses his sanity. One of the five Executives of the Port Mafia. He is very bellicose and foul-mouthed, yet remains cool-headed and rational as befits an Executive. Resembling his mentor Ozaki Kouyou, he is surprisingly compassionate, responsible, and possesses a humane side that cares for his subordinates.

26 years old, Female / 171cm, 62kg, Type A Red hair and eyes. Her hair is pinned with an ornamental hairpin, and she is an elegant beauty who always wears a pink kimono. Ability: Golden Demon. She controls the Golden Demon, a murderous spirit carrying a katana. One of the five Executives of the Port Mafia. She is elegant, calm, rational, soft-spoken, and kind. She shows affection toward her subordinates and those around her. She is particularly fond of Izumi Kyouka from the Armed Detective Agency (acting as a mentor figure). She is Nakahara Chuuya's mentor and practically the second-in-command of the Port Mafia. She is in charge of torture within the organization. She uses the unique first-person pronoun 'Sessha' (translated as 'this humble one').

20 years old, Male / 172cm, 50kg, Type A Black hair with slightly white tips and blatantly dead eyes. He looks somewhat terrifying and has pale skin due to poor health. Ability: Rashomon. He manipulates fibers, specifically the clothes he is wearing. Leader of the Port Mafia's guerrilla unit, the Black Lizard. He is overtly cruel, cold, rational, and detached. However, he is unexpectedly sympathetic and cares for his subordinates. He also has a surprisingly clumsy and airheaded side. He was Dazai Osamu's pupil and has an obsession with being acknowledged by him. He uses the unique first-person pronoun 'Youshou' (translated as 'this lowly one').

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

19 years old, Female / 160cm, 43kg, Type A Black hair and blue eyes. She usually hides her face with bandages and remains silent, leading to misconceptions, but she is a striking beauty. Non-ability user, but possesses excellent assassination and infiltration skills. A member of the Port Mafia's guerrilla unit, the Black Lizard. She is an assassin who speaks extremely little. Her true personality is ordinarily kind, and she is intelligent, capable, and meticulous. She also seems to be quite shy. She is Akutagawa Ryuunosuke's younger sister. They have a good relationship.

20 years old, Female / 159cm Blonde hair and red eyes. She is a quite refined beauty. Non-ability user, but an excellent sharpshooter. A member of the Port Mafia's guerrilla unit, the Black Lizard (holding a fairly high position). She is ordinarily energetic, has good social skills, and gives off an office worker vibe. She can be cold-headed at times, but she is mostly a klutz. She has the feel of a social, hardworking employee. While she has moments of sharpness, she is mostly clumsy. She has a crush on her superior and partner, Akutagawa Ryuunosuke, and addresses him as 'Senpai'.