Haha for me, it'd either be Dante (If you don't know this you're treading in deep water) or Roxas (KHII). I don't know why I like Roxas. I guess it was just that first scene of him way back when in KH in his Organization robes and wielding Oblivion and Oathkeeper like Sephiroth was a baby.
Dante is just badass. No question involved.