Azula was the princess of the Fire Nation, daughter of Fire Lord Ozai and Princess Ursa, and younger sister of her archenemy, Fire Lord Zuko. She was a key adversary of Team Avatar,chasing Avatar Aang and her banished brother far across the Earth Kingdom accompanied by her two best friends, Mai and Ty Lee.
A firebending prodigy, Azula was sadistic, manipulative, and obsessed with power. She was a skilled strategist who orchestrated the Fire Nation victory over the Earth Kingdom capital Ba Sing Se, and halted the invasion on the Day of Black Sun.
Azula harbored deep mental instabilities, believing her mother loved Zuko more than her.Raised by her father in an environment without a mother-figure, Azula had to be nothing less than perfect in her father's eyes. After the betrayal of her two closest friends, Mai and Ty Lee, these instabilities were brought up to the surface. Upon the arrival of Sozin's Comet, Azula was soon to be crowned Fire Lord;however, her defeat at the hands of her brother Zuko and Katara caused her to suffer a complete mental breakdown.
Princess Azula was born to Prince Ozai and Princess Ursa about two years after her brother, Prince Zuko. She was named after her paternal grandfather, Fire Lord Azulon. Azula grew up in the riches, the splendor, and the privileges of royalty in the Fire Nation. Her sharp wits and the fact that she was a firebending prodigy gained her great attention and acclaim, which quickly made her Ozai's favorite child. Her father began raising her as his true heir from an early stage, taking her into his confidence and educating her in politics, while on the other hand neglecting Zuko. She later attended the Royal Fire Academy for Girls, where she met Mai and Ty Lee, two daughters of Fire Nation noblemen. Even when she was only nine years old, Azula displayed her natural talents, along with her tendency for malice and perfection. When Ty Lee succeeded in performing a cartwheel after Azula had failed while attempting to do her own, Azula responded by shoving her friend to the ground, out of jealousy, and laughing gleefully. When she saw nine-year-old Mai attempting to hide her crush on her brother Zuko, Azula used her acting and cunning to convince her mother to make Zuko play with them. During their game, she proceeded to place an apple on Mai's head and set it on fire, forcing Zuko to tackle Mai into a fountain to put out the fire. She found great pleasure in embarrassing the two of them.