"Gatherer"

Gatherer was once an honest, fair Matoran leader; but when he interfered in Dark Hunter matters the Shadowed One had him captured and forcibly turned into a living weapon.

One of his last missions was to find out about a "mysterious third player" whose power was said to rival both the Hunters and the Brotherhood.

Powers and abilities
With every opponent he defeated, the "Gatherer" took a piece of the foe's armor and added it to his own. He had no need for food or sleep, and could psychically command subterranean Rahi to do his bidding. He also had a wide array of weapons, including blades, an energy cannon, a Kanoka Disk Launcher, and "mind scramble" Rhotuka Spinners.