Judging on the basis of the game? Sora. no questions asked. come on, they always juice the main character out the yin-yang.

Judging on basis of kick-@$$ ness? You got to give that one to Leon. he rocks unholy rockness, and is parralelled in my opinion, only by Cloud. Cloud goes all crazy electrical and wipes the floor with everyone, but then you get leon powering up the Lionheart like crazy, til it's eight million miles long. you can't even get close to em. plus, leon shoot some wicked fireballs. what? yeah. thought so.