Tuyet was the Toa Mangia of Water.
While on Metru-Nui, Tuyet helped the Toa Mangai to defeat the Kanohi Dragon. When the other members of the Team were sent off on missions by Makuta Teridax. Tuyet smuggled the Nui-Stone into Metru-Nui, begun killing off Matoran and blaming Dark Hunters claiming it was a countdown until they slaughtered everyone on Tuyet's old island unless the Nui-Stone was returned. She stayed in her home, pretending to be in a state of shock and said she did not in fact posess the stone and that the Dark Hunters would not believe this so would continue.