Kazuo Taoka

Taoka, an orphan, grew up as a young street fighter in Kobe under the guidance of Noboru Yamaguchi, the Yamaguchi-gumi's boss. He earned his lifelong nickname "Kuma" ("the Bear") due to his signature attack of clawing at an opponent's eyes.

He was imprisoned for murder from 1937 to 1943, and assumed the role of kumicho three years later at the age of 33. In his time as boss, Taoka expanded the Yamaguchi-gumi from a small strikebreaking gang on the Kobe docks to the world's largest criminal syndicate, with over 10,000 members during its peak. Notoriously suspicious and wary of rival yakuza clans, he notably refused to join the Kanto-kai, an inter-yakuza confederation in 1963. In 1972, Taoka forged an alliance between the Yamaguchi-gumi and the Inagawa-kai at a sakazuki ceremony at his home.

He had survived a 1978 assassination attempt when he was shot in the back of the neck by a member of the Matsuda-gumi (松田組), a rival gang to the Yamaguchi-gumi, during a limbo dance exhibition at a nightclub in Kyoto. His attacker was found dead several weeks later in some woods near Kobe.

He led the Yamaguchi-gumi until his death from a heart attack in 1981. His wife, Fumiko, briefly filled the gang's leadership role until a new kumicho, Masahisa Takenaka, was chosen in 1984.

From 1983 until 1990, his daughter, Yuki, was married to Kitarō, a noted Japanese new-age musician.