Aiyetoro once worked on Metru Nui in the Onu-Metru district. Teridax, disguised as Turaga Dume, ordered the Vahki to force all the Matoran of Metru Nui into matoran spheres. Aiyetoro was captured and put into a matoran sphere, but later was rescued and awakened on the Naho Bay by the Toa Metru.
Due to having stayed too much time in a matoran sphere, Aiyetoro's body transformed into a smaller and weaker form. He and the others also lost all of their memories. Aiyetoro helped into the construction of Onu-Koro with the parts of the airships that the Toa Metru used to transport the Matoran to Mata Nui during the Great Rescue.
During his time on Mata Nui, he became a miner and dug for Ore. He was forced to be evacuated from his village after the Bohrok Gahlok attacked it. After the Bohrok-Kal's defeat at the hands of the Toa Nuva, Aiyetoro and the other Mata Nui matoran were rebuilt by the Turaga into stronger forms, similar to the ones they had on Metru Nui.
Aiyetoro eventually met Hahli while he was doing his work shift, but he couldn't finish it because he didn't have a lightstone. Hahli brought him one from cave E, and he gave Hahli twenty-five widgets and explained her the virutes of Duty and Destiny as a reward. Aiyetoro was later evacuated alongside the rest of the matoran during the Rahkshi attack on Mata Nui.
Return to Metru Nui
Aiyetoro helped to consturct the boats to return to Metru Nui, where he and the other Matoran reside now.