Matoran

The Matoran are a species of bio-mechanical humanoids that are native to the Matoran Universe. They are the main citizens from the BIONICLE franchise.

History
The Matoran were originally created by an alien race called the Great Beings native to the planet Bara Magna to work on a colossal robot called Mata Nui, who would traverse the galaxy and protect living things. After they had finished, Mata Nui created life-forms, called the Makuta, that would populate the world inside of his body with new life-forms. The leader of the Makuta, Teridax, betrayed Mata Nui, and put him into a deep slumber, causing him to crash into an ocean planet called Aqua Magna. After the Matoran woke him up, Teridax took control of Mata Nui's body and sent his soul back to Bara Magna. He traversed the deserts and, with the help of the natives, found a new body, and defeated Teridax.