Kya is the only daughter to Avatar Aang and Katara and a waterbending master as well as renowned healer. When Tenzin visited the South Pole alongside Korra, he encountered her and Bumi, his older siblings who later followed him on Air Temple Island. As the aunt of Jinora, Ikki and Meelo she was willing to protect them when their home was infiltrated and as the only close person who truly understands Korra and Asami's relationship, she's willing to talk to them about anything they need.