Tiri and Stelt are a Ga-Matoran and a Vo-Matoran, respectively, who were able to escape the island of Karzahni and fled to the island of Stelt. The Vo-matoran had forgotten her name, so she renamed herself after the island they now lived on and labeled herself leader and Tiri deputy of a commune they didn’t have. After the emigration to Spherus Magna, Tiri and Stelt continued to live in the Great Spirit Robot’s remains.