Matoran Universe

The Matoran Universe is the home of the Matoran species.

History
The Matoran Universe was created by the Great Beings on Spherus Magna before The Shattering. It was housed inside the body of the enormous robot known as Mata Nui, and they sent the robot out into the universe to explore.

A few thousand years after the creation of the universe, a number of upstart warlords known as the formed the League of Six Kingdoms and attempted to conquer the universe. The insurrection was put down by the Brotherhood of Makuta.

Makuta Teridax, inspired by the League's assault, devised a plan to overthrow Mata Nui and become ruler of the universe. His first step involved unleashing a virus into the atmosphere, which affected Mata Nui and put him in a coma, causing the robot to crash on the surface of Aqua Magna in an event known as the Great Cataclysm.

For a thousand years, Mata Nui's state gradually worsened, until he was near death. The Toa Inika engaged an epic quest for the Mask of Life, which could help save Mata Nui, but Mata Nui died before they were capable of healing him. However, Matoro activated the Mask of Life and sacrificed himself to revive the Great Spirit, if not awaken him. Toa Ignika was then able to awaken him in Karda Nui. However, Teridax took control of Mata Nui's body when it rose and assumed control of the Matoran Universe.