Port Mafia's Previous Boss

He was the unnamed previous boss whom Ōgai Mori succeeded in the Port Mafia eight years ago.

Appearance
He has a balding white hair and a beard. During his younger years, he is shown to be wearing a coat.

Personality
He was described as a ruthless and violent leader by Ryūrō Hirotsu, often spreading violence and having unsettled and rudderless orders. Eventually, this caused the mafia to recklessly expanded its disputes. He also doesn't hesitate to kill anyone who betrays the mafia.

History
During his years, Yokohama had became a violent city. Eventually, he fell to sickness and got bedridden. Later on, he was killed by Mori.

He was then later on resurrected by Arthur Rimbaud and was used as his ability, but was defeated by Chūya Nakahara and Osamu Dazai with the latter nullifying Rimbaud's ability.