Ikki is an airbender, the younger daughter of Tenzin and Pema, and the granddaughter of Avatar Aang and Katara. Ikki lives with her parents and two siblings on Air Temple Island, near Republic City. The second child of Tenzin and Pema, she has an older sister named Jinora and a younger brother named Meelo, with another sibling still on the way. Ikki is fun-loving, energetic, and extremely talkative.
Ikki is extremely curious with a very active mind that seems to race a mile a minute. She always has many questions for any situation, as everything is fascinating to her and her active imagination. She will not stop until she has answers to all of the mysteries in life. Energy and hyperactivity often accompanies her wilder moments of curiosity. She is seen irritating her sister when she is trying to learn things from people. For example, when Jinora tried to ask Katara about Zuko's mother, Ikki started asking Katara wild questions.
During Mako, Bolin, and Asami's visit to the island, Ikki seemed to keep up well with Bolin's fast pace and testy questions. She also knows an impressive amount of information about Air Temple Island, even being able to cite how many trees there were.