Prior to the Hundred Year War, many winged lemurs lived at the air temples. While relaxing one day at the Southern Air Temple, Aang and Gyatso flung some fruit pies at a few elder monks, and several winged lemurs took the opportunity to eat the splattered remains of the food. After the Air Nomad Genocide, the winged lemurs were almost wiped out. Upon returning to the Southern Air Temple, Aang found and befriended the only known living lemur there and named him Momo. From that point onward, the lemur was a companion to Team Avatar and followed the group on their adventures.