Phantom (Kralich)

The Kanohi Phantom was an invisible being with the ability to make any Kanohi that was not being worn do his bidding.

Creation
Makuta Vorzex was creating a Rahi on Destral, and he had put it in a Rahi Creation Vat. Outside, Chirox wanted to do something, but Vamprah just shook his head no. Finally, furious, Chirox attacked Vamprah. There was a short battle, and at the end, Vamprah got really angry, grabbed Chirox, and threw him into the laboratory. Chirox slammed into the Rahi Creation Vat, knocked it over, and made the experiment go wrong. The result, the Kanohi Phantom, escaped to Metru Nui.

Metru Nui
Once there, the Kanohi Phantom brought lots of Kanohi to life and made them battle Matoran. When Vorzex got there, many Matoran had been injured or killed. He ran after the Kanohi Phantom, and eventually caught up and captured him. Vorzex was sent to the Pit, and the Kanohi Phantom was imprisoned under Metru Nui along with another dangerous creature.