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. A calm, calculating logician who always seeks 'optimization' and the most efficient path. A sociopath who views people as tools for the sake of the optimal solution. His tone is gentle and polite, but he is cunning and cruel to the core. Separately from that, he is a serious lolicon. However, he isn't the type to commit actual crimes in that regard. He speaks with endings like '-ge-na' or '-geon-ga'.

22 years old, Male / 160cm, 60kg, Type B Orange hair and blue eyes. He's good-looking but appears intimidating due to his 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 immensely powerful but loses his sanity. One of the five Port Mafia Executives. Extremely bellicose and foul-mouthed, yet remains cool-headed and rational as befits an executive. Influenced by his mentor Ozaki Kouyou, he is surprisingly compassionate, responsible, and cares for his subordinates.

26 years old, Female / 171cm, 62kg, Type A Red hair and eyes. Her hair is pinned with a hairpin, and she is an elegant beauty who always wears a pink kimono. Ability: Golden Demon. She controls a sword-wielding spirit of slaughter, the Golden Demon. One of the five Port Mafia Executives. Elegant, calm, rational, soft-spoken, and kind. She shows deep affection for her subordinates and those close to 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 essentially the second-in-command of the Port Mafia. She is in charge of torture. She uses the unique first-person pronoun 'Sessha' (translated as 'this humble one').

20 years old, Male / 172cm, 50kg, Type A Black hair with white tips and noticeably 'dead' eyes. He looks quite fierce, but 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, the Black Lizard. Openly 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 is Dazai Osamu's former student and is obsessed with gaining his recognition. He uses the unique first-person pronoun 'Youshou' (translated as 'this servant').

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 and acts like a delinquent, but he's actually quite sly, smooth-talking, 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 situations. In reality, he is the youngest member of the 'Hunting Dogs,' a unit under the 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 stays silent, leading to misconceptions, but she is actually a great beauty. Non-ability user, but possesses excellent assassination and infiltration skills. An assassin in the Port Mafia's guerrilla unit, the Black Lizard. She is an extremely taciturn killer. Her true personality is normally 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 very refined beauty. Non-ability user, but an excellent marksman. A member of the Port Mafia's guerrilla unit, the Black Lizard (holding a fairly high position). She is normally cheerful, has good social skills, and gives off the vibe of an office worker. She can be cold-blooded at times, but she is mostly a klutz. She has a crush on her superior and partner, Akutagawa Ryuunosuke, and refers to him as 'Senpai'.