Hisayuki Machii
The Korean-born mobster got his start in the Japanese underworld after settling in Tokyo following World War II. Hisayuki Machii became a regular fixture in the black market and made his name in everything from tourism and prostitution to oil importing. He founded the Tosei-kai gang, which reached its height in the 1960s. The organization allowed Machii to become an essential fixer between Japan and South Korea. His exploits eventually made it possible for him to acquire a ferry service that connected Japan and South Korea along the shortest distance between the two countries. The gang was later disbanded, but Machii followed that up by forming two front organizations, Toa Yuai Jigyo Kumiai and Toa Sogo Kigyo. Machii retired in the 1980s, virtually unscathed by the law, and died in 2002.