Masutatsu Oyama

Masutatsu Ōyama born Choi Yeongeui Hangul 최영의 Hanja 崔永宜 more commonly known as Mas Oyama was a karate master who founded Kyokushin Karate considered the first and most influential style of full contact karate A Zainichi Korean he spent most of his life living in Japan and acquired Japanese citizenship in 1968