Wreight is part of the Makuta Community project thingy.
Wreigth was a kindly Makuta. He seemed a bit grouchy and stiff, but not very hostile. He enjoyed experimenting with Kanohi, and tried his hand at maskmaking. One day, he showed the other Makuta his mastery with maskmaking, at terridax's request. He created a mask, and when finished, he held it towards his comrades, announcing the creation of the Mask of Undeath. However, when he tried to wear it, the other Makuta didn't believe him, expecting more. They threw the mask into the sea, where Wreigth chased after it, attempting to retrieve it. The Makuta laughed at this attempt to save a seemingly useless mask, but Wreigth wanted revenge. He tried to recreate he tried to make a better mask of Undeath, and accidently messed up, in his rage. This version of the mask was simply too powerful, and wearing it killed Wreigth, dissolving his essence after a few seconds. The Mask of Undeath which had been thrown into the sea wound up on Karzhani's island, where it was given to a matoran.
Powers: Wreigth had a sword, which channeled the power of the Kanohi the user wore. Wreigth wore the mask of X-Ray vision before he equipped the Mask of Undeath. He also possessed a hammer, which he used to forge his masks.
The green represents Antidermis. ( or whatever Makutas insides are.)