Momo

Momo was a winged lemur and a loyal companion of Avatar Aang and his friends. By late 99 AG, he lived at the Southern Air Temple and was the only known specimen of the winged lemur species to still be alive after the Air Nomad Genocide. While visiting the Southern Air Temple in late 99 AG, Avatar Aang, Katara, and Sokka heard a strange noise from the doorway of the sanctuary of the temple, indicating that someone had entered...

Origin

Southern Air Temple