Ko-Koro

Ko-Koro's location was chosen by Toa Nuju after the events of the Great Cataclysm, when the Ko-Matoran were awakened by the Turaga. It laid in midwest Mata Nui. Toa Kopaka was sworn to protect this village. Turaga Nuju was the elder of Ko-Koro.

Quest for the Masks
During this time the village began suffering from Infected Rahi attacks. Teridax's harassment would continue for centuries until the coming of Toa Kopaka. The Ko-Matoran defended themselves from the Rahi until the arrival of the Toa Mata.

Bohrok War/Rahkshi
Ko-Koro would also be damaged during the first strike of the Bohrok swarms of Tahnok, and later partially destroyed by the Rahkshi. When Metru Nui was rediscovered the Ko-Matoran departed, leaving Ko-Koro abandoned. It was eventually destroyed by the Bohrok once the Toa Nuva freed the Bahrag.