Mata Nui (Being)

Mata Nui also known as the Great Spirit and the Great Spirit Mata Nui, was the guardian of the Bionicle universe.

History
In the ancient past, the Great Spirit Mata Nui was created by the Great Beings.

Mata Nui was also responsible for the creation of several races, such as the Makuta, and the Barraki, and could also create additional members of races. Eventually, the Makuta rebelled against him, led by Makuta Teridax. Using information from Makuta Mutran, who was recently dispatched to Tren Krom, Makuta Teridax formulated "The Plan", to overthrow him. Meanwhile, Mata Nui had suffered from the Matoran halting work during the Metru Nui Civil War, to the point of near-death. Fortunately, Jovan's Team was able to use the Kanohi Ignika and save him.

But Mata Nui did see the attack coming, and manipulated events to make sure things could be made right. When new Toa Metru were about to be chosen by Toa Lhikan shortly before the Cataclysm, Teridax wished to influence the choices to his advantage. Knowing this, Mata Nui and his Order falsified prophesies regarding the identities of the new Toa. Teridax believed these prophesies, and influenced Lhikan to choose others to become the new Toa. But as these "others" were fake to begin with, the ones that Teridax influenced Lhikan to choose were in fact the true destined Toa Metru.

The Toa Nuva were sent to Voya Nui to find the Ignika, Mask of Life, that could heal Mata Nui. Six Matoran followed them determined to help, and were transformed into the Toa Inika. The Toa Inika got the mask, after several struggles against rogue Skakdi ex-Dark Hunters calling themselves Piraka, but it immediately flew away and plunged into the sea, heading for the undersea city of Mahri Nui that rested on top of the Pit, which it considered the most damaged place in the universe.

There, the mask was found by a Ga-Matoran named Kyrehx, who passed it on to a Po-Matoran named Dekar. The Barraki went after it as soon as they learned of it, and the waters of the Pit were slowly destroying it. The Toa Inika pursued it down to Mahri Nui through the stone cord linking Mahri Nui and Voya Nui. They encountered a tribe of Zyglak, and a giant venom eel cracked the cord and attacked them.

However, they became Toa Mahri, transformed by the mask. They had from that point around 24 hours to heal Mata Nui before he died, and three days after that till the entire underground Matoran universe was destroyed. Unfortunately, they failed, and shortly after the Toa Mahri recovered the Ignika and cut the Stone Cord in preparation for Mata Nui's awakening, he died, causing the Mask of Life to go dark (it did not, however, lose its powers--the darkness was purely symbolic). The universe then slowly began to die; then, after falling into Karda Nui, Matoro put on the Ignika. Matoro died, bringing Mata Nui back to life and the universe was saved, but he remained asleep and began having terrible nightmares.

After arriving in Karda Nui, the Toa Nuva discovered that there were six fragments of a keystone that told how to awaken Mata Nui. From the first three stones they acquired, they learned that the secret to reviving the Great Spirit was in the Swamp of Secrets.

Trivia

 * After Mata Nui's death, the universe would only have three days before ending. Islands on the surface would not be affected, but the entire underground universe would be flooded.
 * Mata Nui was actually not hard to find. The trick was knowing you had found him.
 * Prior to his death and revival, Mata Nui was, at least on some level, aware of what was going on in the universe.
 * Before Mata Nui existed, the universe was kept in order by an entity called Tren Krom.

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 * Mata Nui looks similar to a Toa.