Azula

Azula is the main antagonist of Avatar: The Last Airbender. She is Zuko's sister and the princess of the Fire Nation. She first appeared in 'Help Is On The Way' and was voiced by Grey Delisle.

Trivia

 * When Azula calls Sharlene 'Zuko's girlfriend'. Sharlene then point it out that she already got Jack and Zuko points out that Sharlene is not his girlfriend.
 * It appears that Azula makes friends with Tracy's twin sister Tricia.
 * During the battle, Azula attacks Sonic and Sharlene with lightning like she did to Aang.