TLOA find bisons

It is the the legend of Aang but when they find out that Appa not only sky bison left Aang: he is a avatar and last air bender Zuko: he is the new fire lord and he is a fire bender Toph: she is earth bender and she is blind, so she only used the earth, smell and hear Katara: she is a water bender and she used spirit water to heal people and she is a sister of Sokka Sokka: he is no-bender and he used a boomerang and he is brother of Katara You can add everyone else and animals in this story And you can do whatever you want and you pick age, gender, height and what element that you pick and your can start with where or when find a other sky bisons