"Shadow Stealer"

Not many hard facts are known about Shadow Stealer, though he was known to attack Toa and Dark Hunters alike. Some legends say he was a hero before even the Toa existed (he was once a member of the Hand of Artakha), and became jealous when The Toa became Mata Nui's champions. "The Shadowed One" originally sent him to the ends of the earth to complete a mission of several years, but Shadow Stealer finished in days and then slowly made his way back, fighting Toa and Dark Hunters on the way. The Shadowed One seemed to plan to challenge him once he returned, it is unkown what became of Shadow Stealer after the confrontation.

Powers and abillities
•Shadow Stealer could absorb shadow and convert it to energy.

•He could teleport using shadows as exit and entry points (though there was apparently a limit to how far he could go).