Katara's relationships

Relatives
Hakoda

Hakoda is Katara and Sokka's father. As shown in "The Awakening", Katara felt very hurt and betrayed when he had to leave to fight in the war. They seem to have made up at the end of the same episode.

Kya

Katara's mother was a very important figure in her life. She was killed during a Fire Nation raid to their village when Katara was very young. This caused Katara to take on a maternal role in her family. Her only inheritance is a necklace first worn by her "Gran Gran", passed down from her and then to Katara.

It was revealed in "The Southern Raiders" that Kya sacrificed herself to save Katara's life, as the Fire Nation sought to kill Katara, since she was the last waterbender.

Sokka

Sokka and Katara often get on each others nerves, but inside their hearts, they love each other dearly. When their mother died she took over this role. In "The Runaway" it is revealed that when Sokka tries to see his mothers face, all he sees is Katara.

Kanna

Kanna is Katara's grandmother, hence Katara and Sokka's habit of calling her "Gran Gran"

Other
Aang

Katara, who listened with her grandmother's stories regarding the Avatar, believed that he will one day return to save the world. When Aang unfroze from the Iceberg, Katara developed an immediate attachment to the young Airbender, believing him to be special. Upon learning that he was the long lost Avatar, Katara spent no time to convince her brother to go after Zuko's ship to rescue him. From there on, she had been Aang's staunch defender, offers him emotional support, as well as becoming his closest friend.

Aang developed a strong love for the young Waterbender as the series progressed. Even though there have been numerous hints that she is interested in Aang romantically, Katara's feelings for the Avatar have been mostly ambiguous - even to herself, as seen in "The Ember Island Players".

This ambiguity has been virtually eliminated with the concluding scene of "Sozin's Comet" in which the two are seen kissing--an event which was instigated by Katara herself. This clearly indicates that Aang's feelings towards her are (finally) entirely mutual, and the two will probably be enjoying a strongly committed long-term relationship. The creators themselves have commented within an interview that they have always favored the idea of a relationship between Aang and Katara.

Toph

Toph is the young Earthbending master that they befriended and joined their team in the story. She and Katara would sometimes fight with each other due to their conflicting yet equally-stubborn personalities, as seen in "The Chase" and "The Runaway". However, they had also become good friends, as seen when they had their day off in "Tales of Ba Sing Se". Toph also voiced that Katara was "fun". At least, fun to argue with.

Zuko

Katara's relationship with Zuko is complicated. They first met when Zuko invaded the Southern Water Tribe's village in "The Avatar Returns," and their relationship was often antagonistic as Zuko continued his attempts to capture Aang. In "The Chase," Katara offered to heal Iroh but was rebuffed by Zuko. In "The Crossroads of Destiny," Katara almost began to trust Zuko, and was deeply hurt by his betrayal in rejoining Azula. In "The Western Air Temple," Katara was one of the most vocal of not allowing Zuko to join them. When he was allowed to join, Katara delivered him a cold warning to stay in line, or else. Their relationship will apparently thaw over episodes to come; a scene from the NYCC trailer shows Katara embracing Zuko. This scene takes place in "The Southern Raiders", in which she finally forgives him.