Katara

Katara is Sokka's sister and one of the main characters. She is caring but can have normal teenage outbursts. She is a waterbender and always carries a water skin for bending.

History
Fourteen years old and the only Waterbender in the whole South Pole; Katara had to grow up rather quickly which made her very mature for her age. Her mother was killed in a Fire Navy attack when she was younger, and her father left to fight in the war when she was 12. Raised in a small village in the South Pole with her older brother Sokka, they were mostly taken care of by their grandmother, Gran Gran. While Sokka was off "playing solider", Katara was cooking, cleaning, and doing the laundry. Things haven't been easy, but she never lost hope that it would get better -- that the Avatar would return. Must be some kind of coincidence that she and her brother discover the frozen Aang during one of their fishing trips gone awry.

Trusting of Aang from the moment they meet, Katara has constantly defended him from angry accusations, misunderstandings, and etc. She's very protective of him, and is always there to give support and a helping hand when he needs it. While it's obvious that she cares for Aang, it's not quite clear if she has a full-out crush on him like he has for her. Many of Katara's responses towards him feels almost motherly.

Personality
Katara is sweet and caring, responsible, protective of the downtrodden, mature and wise beyond her years, and is a fighter at heart. When she sees a wrong being committed, she won't hesitate to try set it right. She wears a necklace that once belonged to her mother, and it gives her strength and courage for when the road gets tough. She believes in the Avatar lore and dreams of mastering her Waterbending skills. She travels with Aang and Sokka on their journey to prepare Aang to save the world. More often than not, Katara is the voice of reason in the group.