Chocoball Mukai
Chocoball Mukai is a Japanese pornography actor and professional wrestler. He reportedly received his nickname because of the dark brown color of his scrotum. (Born in Gunma Prefecture, Mukai's real name is Hiroshi Mukaiyama.)
Mukai is best known in the West for appearing in a chapter of Karl Taro Greenfield's 1994 book Speed Tribes. The chapter, in which he was thinly-veiled as "Choco Bon-Bon", depicted his struggle with methamphetamine addiction.
Mukai has since kicked that habit, though, and in 1999 launched a successful side career as a pro wrestler.
The sex industry is still his main source of income: in 2004 he was arrested for performing a live sex show at a Tokyo "happening bar", or sex club. He admitted his guilt to police, reportedly saying "It's my job."