Katara

Katara is a skilled waterbending and blood bending master, born in the Southern Water Tribe to Chief Hakodaand his wife Kya. During her childhood, she was the only waterbender living in the Southern Water Tribe. After losing her mother in a Fire Nation raid and her father left to battle against the Fire Nation in the Hundred Year War, she was raised by her paternal grandmother Kanna alongside her older brother Sokka.

When Hulk arrives, she proposes that he should help them fight the Fire Nation, saying with his strength, they can easily turn the tide of the war.