Well let's see here. If we're typing by element...I think Clay and Toph would be pretty evenly matched, as even though their personalites are different, their styles are similar- slow and steady, wait for your opponent, etc.Zuko would probabl trump Kimiko though, since I've definitely seen Zuko dish out much more potent fire based attacks than Kimiko ever has.Katara vs. Omi is a hard one... I feel like Omi's attacks are more quick fire and versatile than Katara's but Katara can heal, which is a huge advantage.Rai woud win over Aang is a purely air/wind battle. Rai can use his wind abilities very well offensively and defensively, while Aang really only knows how to use airbending defensively... Actually, Rai would win over Aang in general as long as he didn't go into the Avatar State... I mean really, Raimundo would win by sheer force of will.AND I overanalysed again didn't I?Anyways, great piece of artwork! Your style is great and the concept is perfect!I personally love both shows, though Xiaolin Showdown will always be my paramount.