Chang Keun Choi Martial artist
Choi Chang Keun (최창근; 崔昌根; born 1941), widely known as C. K. Choi, is a South Korean master of taekwondo, and one of the twelve original masters of taekwondo of the Korea Taekwon-Do Association. Following a career in the South Korean military, Choi emigrated to Canada in 1969, where he continues to teach his martial art.