Park Kwangcheol , better known by his Japanese name Kotetsu Boku , is a South Korean mixed martial artist and kickboxer, competing in the Lightweight division. He has mostly fought in Shooto, where he was the Shooto Lightweight Champion, but has also fought in DREAM, King of the Cage, SCup, Cage Force and K1 HEROS. Boku is also a former ONE FC Lightweight Champion.
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Source: Wikipedia