Moorik is a Toa of Magnetism. The image here is his weapon. The full picture of him will be given after Brickfair. Also, as this is a collaboration, this is not the "official" story. That will be given after Brickfair as well.
Moorik was originally on an island with many Matoran, but due to the Matoran equivelent of a weak heart, he was sent to Karzahni. As Karzahni could not fix him, Moorik was forced to work as a Machinist.
He became one of the leaders in an attempt to escape the realm. The plan was to take thirty-seven Matoran, but due to discovery only sixteen got away. They wandered around the main islands of the Matoran Universe, and four of the members died. after the fourth, the leader decided they should head to lands in the south and start their own colony.
They went south, but the islands were too thickly covered with poisonous vegetation. Another one of their ranks died along the way. They finally came across an island that appeared habitable, and went to investigate. They all fell into a pit of energized protodermis, and nine of them, including Moorik, became Toa. The other three vaporized upon touching it, including the leader.
Uncertain of what to do, the Toa decided to try one more island before heading north. The island was inhabited by hundreds of Matoran and eight Turaga. They had eight villages, and each one was being attacked by Rahkshi. The Toa helped drive them off. Moorik now resides with the Mo-Matoran (matoran of magnetism) in their village.
Moorik's weapon is (feel free to groan) a horseshoe magnet. His mask is the Kanohi Kehndrakh, the mask of identification. It allows him to tell who made an object, and when, where, and how they did it.