Iio

"air"

- Choose well. A sky bison is a companion for life.

Sister Iio was an Air Nomad nun, as well as the Mother Superior of the Eastern Air Temple during Aang's childhood. She always knew best, but she was so unaffected and cheerful that no one really minded.

History
In 6 BSC, a group of young Air Nomad children went to the Eastern Air Temple, doing the tradition to bond with a group of young flying bison. As the Mother Superior, Sister Iio began to prepare the children, including Avatar Aang. When the mother of flying bison came with her calves, Sister Iio gave the young Air Nomad each of them an apple, telling them to choose a bison carefully, as "a sky bison [was] a companion for life."

Six years later, Fire Lord Sozin began the war, and along with the rest of the airbenders, Sister Iio was killed during the Air Nomad Genocide.

Trivia

 * She wore a beaded necklace with a brooch that was similar to the one Monk Gyatso used to wear and the one Aang wore at Fire Lord Zuko's coronation.
 * Aside from Avatars Yangchen and Kyoshi, Iio was the only named female airbender to be seen in the series.
 * Her arrow tattoos marked her as an airbending master.
 * She was said to never look older than a forty-five-year-old, though she was actually eighty-seven years old.
 * She was known to be very good at playing airball.