Azula

After Azula was defeated in a duel with her brother Zuko, Azula was captured by her brother Zuko. Although he later manages to escape and comes to the capital of the fire nation to take revenge on his brother Zuko, he realizes that he cannot become a fire lord. When her brother Zuko notices her, Azula tries to defeat her brother with her manipulations. However, he cannot succeed and uses the children while escaping, throwing the entire capital into chaos and eventually managing to hide his trail.