Yangchen

 Yangchen was the Air Nomad Avatar succeeding a Fire Nation Avatar and preceding Avatar Kuruk. In her youth, after mastering all the elements, she was eager to make a difference in the world, despite her inexperience. A respected figure, she was hailed for her wisdom, determination, and power. Although the Air Nomads were perceived to be pacifistic people, Yangchen was feared for her fierce willingness in doing whatever was required to perform her duties as the Avatar and maintain balance and peace throughout the world. Due to her devotion, no threats of war occurred for an entire generation after her death.