Umbra was one of the guardians of the Kanohi Ignika. He was the first sentinel put in place by the Great Beings to guard the mask 100,000 years ago, and he continued to serve until the time of the Toa Mahri's mission in the Pit. His powers included the ability to transform into a beam of light. He also possessed skates which let him move at super-speed, a staff that fired lasers, and a Rhotuka spinner that could create hard light projections.
Umbra was the first guardian ever created for the Mask of Life. He used his super-speed, laser lance, and ability to transform himself into a beam of light to defeat all enemies.
Umbra was a guardian of the Mask of Life. He lived deep beneath the surface of Voya Nui. He was the first guardian put in place by the Great Beings more than 100,000 years ago. Umbra was capable of turning into pure light and wore skates that allowed him to move at super-speed. He was armed with a staff that fired lasers and a Rhotuka spinner that could create hard light projections. As of the end of story year 2008, Umbra remained on Voya Nui, waiting for the return of the Mask of Life to its resting place.
Umbra's name originates from the Agori language, not Matoran. He was presumably named by the Great Beings.