Piraka Toa

Piraka Toa was many things. A murderer? Yes. A maniac? Perhaps. But despite his bad aura, he was never a evildoer. He fought alongside his Toa companions as a sword-for-hire, and was damn good at his job. Until one fateful day, while scouting a abandoned village that was rumored to be a Valmai, a cursed place. It was there he was attacked by a Kra-Manas, a shadow-monster.

It's speed outmatched Piraka's, and his shield arm was sliced off. The beast was about to deliver the killing blow, when a large stone struck it, knocking it unconscious. Piraka was helped up by his rescuer, Pohatu, the Toa of stone. Pohatu accompanied him back to the village, where Piraka was fitted for a mechanical arm.

Piraka's newfound arm worked wonders for him in combat, as the hand could morph into a shield made out of hardened light. So the lone mercenary wanders the land of Mata Nui, slaying any beast that dares cross his path.