The Kanohi Ultimix is a mask forged by Makuta Ynot before he defected from the Brotherhood of Makuta. It is the mask of Kanohi Duplication, meaning that the wearer can use any mask the wearer witnesses in action. Ynot originally forged several of them, one for each active member of the Brotherhood, it's allies, and Zev Raregroove. None use them any more, or simply have forgotten they possess one.