Airbending emblem Air Nomads emblem
"Choose well. A sky bison is a companion for life."
— Sister Iio to the Air Nomad children.[1]

Sister Iio was an Air Nomad nun, as well as the Mother Superior of the Eastern Air Temple during Aang's childhood. She was content and cheerful, and her opinions were respected by those in her care.[2]


Before the start of the Hundred Year War, Iio guided a group of young Air Nomad children, including Aang, through the tradition of choosing a flying bison. Leading them to an open area, she gave each of the children an apple to lure a bison calf and advised them to choose carefully when picking out their bison, stating that "a sky bison [was] a companion for life."[1]


Avatar: The Last Airbender

Book Two: Earth (土)


  • 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 first 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 ninety-three at the time of her death.[2]
  • She was known to be good at playing airball.[2]


  1. 1.0 1.1 Ehasz, Elizabeth Welch (writer) & Volpe, Giancarlo (director). (October 13, 2006). "Appa's Lost Days". Avatar: The Last Airbender. Season 2. Episode 16. Nickelodeon.
  2. 2.0 2.1 2.2 2.3 From older Avatar: The Last Airbender official site, originally on (link). No longer updated, encyclopedia now broken though archived here.