My art is martial arts. I don't feel limited to calling myself a Kung fu guy or a bjj guy or what have you. My favourite fighters would have to be out of MMA because I think it's the most free ruleset and does e most justice to martial arts as a whole. So that said my favourite fighters would be:
Anderson Silva
Because he's hard to hit, nigh impossible to get to the ground and even if you do you aren't causing any damage before he gets up, sweeps you, or on the rare occasion submits you. I'm also a fan of the old school of MMA fighters who came from the more brutal pride rules allowing head kicks and stomps.
Chuck Liddell
Because I always loved the way he kept pressure. Even when he wasn't striking it was like people were staring down a lion. Also I think the first time I got really interested in martial arts as a whole rather than just what I was training at the time was when I saw him knock someone out while moving backward with his feet off the ground.
GSP
Because he's Canadian and, like Anderson Silva both incredibly skilled and incredibly humble. I also love how well he manages to integrate the bjj and wrestling. Very few people can move so fluidly on the ground in addition to his very fluid, smooth, striking game
Masahiko Kimura
In my mind one of the hardest fighters ever. His judo and his wrestling were top notch and he fought catch wrestling matches, back when judoka did so, which were essentially no holds barred against very strong opponents for the day. As the Japanese say "no one before Kimura, no one after." That man trained brutally.
Rickson Gracie
His skill and conditioning have always been top notch and like the other fighters in the list he is both a martial artist and a fighter who would take on incredible challenges in NHB matches.