Kefka as a playable character?

Hey people,I'm not a big fan of the Final Fantasy franchise,but I know how good it is and respect everyone who likes it,anyway,the only Final Fantasy game I ever liked was Final Fantasy 6,such as history,as gameplay,and manly the characters,in special ;[ Kefka,my favorite villain on game history ,so...I aways knew that there's a way where you can actually play as Kefka in gameplay,but I never could find this way,if anyone knows it,please tell me,if anyone have already hack the game and create a hack where you play as Kefka or even you play his own story,Please,please tell me...(also sorry for my english)