Hello Taesung,
It was nice to meet you in Boston. Keep up the great work!
This figure was sculpted by a Chinese fellow from Hong Kong or Taiwan (I forget which, it was many years ago). I think The original piece (this figure is a casting, not painted by the original sculptor) won Best of Show at SCAHMS several years back. Sorry, I do not remember the sculptor's name. However I do know that he spent well over a year working on the sculpture alone. The webbing gear and pouches actually have fabric texture that was added with paper! It is indeed a masterpiece by a very fussy/perfectionist sculptor.
Sorry I can't be of more help. I hope this can at least point you in the right direction.
Cheers!!
Mike