Vahi

The possibility of a Mask of Time being made was known far before it was ever forged. The Brotherhood of Makuta created the Voporak mutant capable of detecting the Vahi's power in preparation for when such a mask would be made; Voporak was then given to the Dark Hunters so that he would not be idle in the meantime. Just prior to the Great Cataclysm, Makuta (disguised as Turaga Dume) asked Metru Nui's best maskmaker Vakama to try and forge a Vahi, but this request was forgotten when Vakama became a Toa Metru.

Vakama would later remember "Dume's" request during the Great Cataclysm. By that time, the Toa Metru had collected six powerful Great Kanoka Disks, and he was able to combine them and forge them into a Vahi. He tried to use the mask against Makuta, but his inability to fully control its powers proved little help. In the end, the Vahi fell into the sea.

After rescuing the Matoran from the Visorak, Vakama later found the Vahi broken, leaking tons of energy. He was able to repair the damage, only to have it taken by Voporak. He then got caught up between Makuta and the Dark Hunter's leader, the Shadowed One, both of whom wanted the Mask of Time themselves. Vakama was able to get away with the mask when the two began to fight amongst themselves, and when Makuta chased him down he threatened to destroy the mask which would destroy all of reality rather than give it up. Makuta reluctantly gave in to the demands Vakama made, and made himself content with knowing where the Vahi was as he knew Vakama would make good on his threat if he tried to take it again.

A thousand years later, Vakama gave the Vahi to Toa Tahu, who attempted to use the mask against the Bohrok-Kal. Again, it proved little help, but it did give the Toa Nuva enough time to come up with another strategy. Voporak and the Dark Hunter codenamed "Ancient" are currently hunting the Vahi down again after Voporak detected this use.Tahu has since returned the Vahi to Vakama.

The Vahi was originally golden in color, but later turned orange due to seawater exposure.

Extreme care needs to be taken with the Vahi, as even slight damage would cause its power to leak out and cause temporal anomalies in its immediate area. If it were to be destroyed, the entire timestream could collapse.