Jaia is from a fanfic story of Avatar the Last Airbender. Jaia was the princess of the Fire Nation. After her mother (who was the fire lord) passed, her father began to rule and he became increasingly harsh and dangerous. Finally she had to run away for her safety. She travelled and met the Avatar and became friends. But her friend was killed and instead of the Avatar Spirit going to a newborn like it normally did, it passed into Jaia making her the next Avatar. She had to learn the 4 elements and how to be the Avatar to be able to stop her brother who was trying to continue their father’s legacy.