Umbra

Umbra is a giant warrior who lives on Voya Nui: guarding the Ignika, Mask of Life from those who would misuse it. He was appointed as a guardian of the mask by the Order of Mata Nui: though he is not a member of the Order.

Anyone who wishes to claim the Mask would have to defeat him in battle first; even Order members. However, he has been secluded near the mask for a long time, so he may not even be aware of what happens on the island's surface (including the fact that the Order sent Axonn and Brutaka to Voya Nui). Umbra is actually not his real name, but one given to him by the Order so that he could fit in with enemies and gain their trust.

Umbra's exact powers are unknown, but they are based in the element of light. Umbra wields a large, double-bladed staff that can fire lasers: it's also equipped with a Rhotuka launcher with an unknown power. He wears a Great Ruru shaped Kanohi mask, but the mask is powerless. He also has ultra-speed skates on his feet that allow him to move as if at the speed of light. They also allow him to ride on walls and ceilings, a major tactical advantage considering he is constantly underground.