While many Eagle Tribe members can be a bit "airheaded," Eris is always extremely focused and quick-witted, which is probably why she spends more time with the earth-bound creatures (like Laval) than those who live in the clouds.
The prince of the Lion tribe, Laval was once very headstrong and more interested in having a good time than anything else. But the battles over CHI have helped him to grow up a little bit. While he still loves nothing more than a new adventure or a chance to have fun, he also understands more about the duties and responsibilities of a prince.
Cragger was always an extremely-competitive kid. He lived for the rush of victory. Laval actually liked that about him when they first met, and the two became best friends at a very young age. At the time, both cared only about adventure, fun, and the occasional prank.
Razar is a mercenary who will fight for the highest bidder. He's allied himself with Cragger... for now.
Worriz can be quite charming for a vicious, merciless backstabber. He was given the role of Wolf Tribe leader because of his negotiation skills.