Chirox was a Makuta who was a high ranking soldier in the Brotherhood of Makuta as well as a rahi creator. Chirox often rivaled against another Makuta named Mutran in rahi creation. Chirox was also responsible for the creation of the spider-like Visorak. Years later, Chirox was sent to Karda Nui along with five others and split up into two groups. Chirox was a member of the first group, consisting of himself, Antroz, and Vamprah, who remained in the Stalagtite Villages to search for the mask of life and convert any surviving Av-Matoran into shadow matoran to prevent the creation of more toa of light after Takanuva. However, they were faced with opposition from the Toa Nuva, who also split into two groups. Antroz, Chirox, and Vamprah fought against the first group of Toa Nuva, consisting of Kopaka, Lewa, and Pohatu, who were assigned to protect the matoran and search for the mask of life.