Summary
Yuuichirou Hanma serves as the father of Yuujirou Hanma and the grandfather of both Jack Hanma and Baki Hanma. He holds the distinction of being the sole individual, alongside Yuujirou, to defeat American forces on a small island within the Okinawa territory during World War II. Furthermore, he is renowned for vanquishing 2,000 US soldiers by employing a single technique.
