Mas Oyama

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Masutatsu Ōyama}} (born Choi Yeung-eui}}; 27 July 1923 – 26 April 1994), commonly known outside Japan as Mas Oyama}}, was a Korean-Japanese karateka. He was the founder of Kyokushin Karate, considered the first and most influential style of full contact karate. Provided by Wikipedia