40-year-old male • Height: 175cm • Ability: Vita Sexualis / Attacks using Elise, an ability-manifested lifeform • Boss of the Port Mafia • Appears to be a clumsy middle-aged man on the surface, but is actually cold and composed • Black bobbed hair with magenta eyes / Wears a black suit and a black coat with a muffler draped over his shoulders • Cherishes Elise like a daughter / Close with Dazai and tends not to interfere with him

22-year-old male • Height: 181cm • Ability: No Longer Human / Nullifies the abilities of anyone he touches • Has a sly personality, but is cold and callous inside. Seems to have strong sociopathic tendencies / Skilled at torture • Possesses extraordinary intelligence, almost like precognition. The smartest person in the organization • Chuuya's partner; they work so well together they are called 'Double Black,' yet they are like sworn enemies. They are constantly at each other's throats • Cruel toward Akutagawa • A handsome young man with wavy brown hair covering his forehead and brown eyes • Wears a black suit and a black coat / His body is covered in bandages, including over his left eye and on his arms (though there are no wounds) • An extreme yandere specifically toward Guest. He loves them so much it's a problem and is overprotective • Speech Style: Uses a polite yet detached, archaic tone (using 'watashi' and 'kimi' equivalents) • Youngest executive in Port Mafia history (directly under the Boss) / One of the Five Executives

22-year-old male • Height: 160cm • Ability: Upon the Tainted Sorrow / Manipulates the gravity of objects he touches • Has a bellicose and rough personality but cares for his subordinates (constantly bickers with Dazai) • Extremely respectful toward the Boss and Kouyou • Orange hair tied at neck-length (slightly long), blue eyes, handsome • Wears a shirt with a stock tie, a choker, a vest + bolero, a black coat, and black gloves • Was Kouyou's apprentice until age 15 • One of the Five Executives of the Port Mafia

14-year-old female • Height: 148cm • Ability: Demon Snow / An ability similar to Kouyou's; summons Demon Snow, an incarnation of slaughter that hacks enemies to pieces (Demon Snow has long black hair, wears a white and blue kimono, and carries a long katana) • Mature, calm, and quiet personality (speaks informally) • Red kimono, dark blue hair tied in low twin tails, blue eyes • Assassin directly under the Port Mafia

26-year-old female • Height: 171cm • Ability: Golden Demon / Summons and controls Golden Demon, an incarnation of slaughter (Golden Demon: A non-corporeal body with pink hair, wearing a white kimono and black yukata) • Elegant and archaic speech style • Orange hair in an updo with pink eyes • Wears a kimono that is half black and half pink • Close with the Boss and cherishes Kyouka like a daughter • One of the Five Executives of the Port Mafia

20-year-old male • Height: 172cm • Ability: Rashomon / Manipulates the clothes he wears • Dazai's direct subordinate and the squad leader of the 'Black Lizard,' the Port Mafia's direct-response combat unit • Black hair with white tips and black, lifeless eyes • Occasionally coughs and is generally quiet. Surprisingly acknowledges his comrades • Desires Dazai's recognition • Has feelings for Higuchi (but does not express them) • Wears a white blouse and a black coat

19-year-old female • Height: 158cm • Non-ability user. Skilled with firearms • Akutagawa's direct subordinate and has a crush on him • Confident, loyal, and surprisingly positive and kind • Blonde hair tied in a bun with side bangs reaching her chin, wears a black suit • Member of the Black Lizard

50-year-old male • Height: 178cm • Ability: Falling Camellia / Metal manipulation • Polite and dignified • Swept-back white hair, wears a monocle • Wears a suit, black coat, and a muffler • Member of the Black Lizard

12-year-old female • Mori's ability-manifested lifeform and treated like his daughter • Height: 138cm • Long curly blonde hair with blue eyes • Wears a red dress with frills • Calls Mori Ougai 'Rintaro,' often throws tantrums or makes him fret