Aang (Zach Tyler Eisen) is a 12 year old. He is the most important character in the series. He was frozen in ice with his flying bison, Appa, for 100 years. He was found by a young Waterbender named Katara. Now he is the Avatar, the master of 4 different powers: water, earth, fire and air. Aang is a hero, but he doesn't want to be a hero. He is trying to make the world good again.