Iio

"air"

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

Sister Iio was an airbender nun and the Mother Superior of the Eastern Air Temple during Aang's childhood.

History
Sister Iio prepared several children, including Avatar Aang, to bond with a group of young flying bison. She gave each of them an apple, telling them to choose a bison carefully because, "a sky bison [was] a companion for life". She always knew best, but she was so unaffected and cheerful, that no one really minded.

As with the rest of her people, Sister Iio did not live to see Avatar Aang bring an end to the Hundred Year War.

Trivia

 * She wore a bead necklace that was similar to the one Monk Gyatso used to wear.
 * Her hair was styled similarly to Avatar Yangchen's.
 * Aside from Avatar Yangchen and Avatar Kyoshi, Iio was the only named female airbender to be seen in the series.
 * Her arrow tattoos marked her as an airbending master.
 * Except for Avatar Yangchen, Iio was the only female Air Nomad to speak and appear in the series.
 * She was actually eighty-seven years old despite never looking a day older than forty-five.
 * She was known to be very good at playing airball.