Katara

Katara is a powerful female Waterbender. She was born and raised in the Southern Water Tribe by her grandmother, Kanna, alongside her older brother Sokka. Katara was the last Waterbender in her tribe and led a normal teenage life for a Southern Water Tribe girl until she and her brother discovered the young Air Nomad Avatar, Aang, encased for 100 years within a sphere of ice. In need of a Waterbending teacher, the siblings and Aang left the South Pole for the Northern Water Tribe. Katara and Sokka eventually became close friends of Aang, and after their journey to the North Pole, continued to travel with him across the world as he mastered the remaining elements, Earth and Fire. The siblings' assistance helped Aang halt the Fire Nation's ambitions of world domination, ending the century-long war, and finally restoring balance to the world