After the defeat of Makuta, the heroes of Mata Nui find themselves outgunned by the Bohrok and Bahrag twins. To help them in their defense of the island, the Toa and Matoran inhabitants find or create accessories to even the odds.
This little number was created by Onu-Koronan engineer Nuparu from discarded Bohrok pieces. It is the Matoran equivalent of the Exo-Toa, and allows a Matoran to hold his own against Bohrok Va, and even the Bohrok for a short time.
Deep beneath the surface of Mata Nui, the Toa discover a power greater than any Bohrok: the Exo-Toa. Each Toa dons an Exo suit for their battle with Cahdok and Gahdok.