- “Fohgiv-a-ness, please!”
- ―Fighting Fat Tony.[src]
He, along with the rest of the Yakuza, were hired by the Springfield Investorettes in order to take on the Springfield Mafia, which ended up in a massive fight between the two on the Simpson house's front yard. The Yakuza Boss is the quietest member of the fight, which Homer correctly guessed that it meant that he was extremely skilled with fighting (although he was unable to witness his taking down multiple Mafia men due to Marge forcing Homer inside). As Homer is forced inside the house, the Yakuza Boss is heard screaming, "Hiiiiya!" as he is fighting with the Springfield Mafia outside as well as multiple bodies being knocked down. Not long later, the Yakuza Boss eventually ended up getting thrown through the kitchen window, politely apologizes, and requests the Simpson family to forgive him before going back to the fight from the back door.
The Yakuza Boss recently appeared in The Simpsons: Tapped Out as a limited time character during the Secret Agents 2017 event that can be earned by completing all of the Situation Room's Wall Street dossiers.