Takua was an Av-Matoran who was taken from his homeland during the Time Slip and placed in Ta-Metru. He later lived in Ta-Koro after the Great Cataclysm, and led the life of a wanderer and adventurer. The discovery of the Kanohi Avohkii, the Mask of Light, revealed him to be the Herald, meant to discover the Toa of Light. The actions of Makuta Teridax resulted in the death of his best friend Jaller, causing Takua to realize that he was destined to be the seventh Toa. He donned the Avohkii and transformed into a Toa, renaming himself Takanuva.