I have a few that I use in the game. Unfortunately one of my top faves, Hwang, isn't in the game.
Anyway.... I have found myself using alot are Seung Mina, Yunsung, Kilik and Mitsurugi. I am also starting to use Nightmare non-stop (obviously he's become my top fave along with Hwang ) as I find his moves truly impressive. I think Link should be on there as well.