Hwang Su il
Taekwondo ITF Fighter world champion

Motion capture actor

The original motion capture actor who plays Hwoarang in Tekken 3 is Su-Il Hwang of the 'Japan International Taekwon-Do Federation' (Japan ITF).This is why Hwoarang can be seen performing segments of the ITF patterns Hwa-Rang and Sam-Il in several of the games (less info)