Zetian

Zetian is a Turaga of ice.

Matoran
He was a Matoran guard in an unknown village on an unknown island, but was not from Tyrveryx.

Toa
As a Toa of Ice, he protected his homeland and was joined by the five Toa from his team, until they were sent to respond a call for help from their predecessors as Turaga of Tyrveryx. They helped defeat the unknown threat and half of the team, an unnamed Toa of Plantlife, Zetian and an unnamed Toa of Stone remained behind to protect and guide the Matoran as Turaga, while the other Toa, a Toa of Fire, a Toa of Water and a Toa of Iron headed home to become Turaga there. In the 3,000 years that followed, Zetian, his fellow Turaga and the Matoran had only to worry about occasional Rahi attack, untila few months ago. Makuta Gorast had became bored on Destral and decided to conquer a few islands to cheer herself up. So, she teleported to the islets around Valmai, but they were uninhabited, so she attacked Tyrveryx with a small army of Mana-Ko, which were trapped inside a cave by the Matoran. Then, Gorast attacked the Matoran villages, destroying them all, only to find the Matoran were already evacuated. Then, however, Gorast freed her Mana Ko, and with their help, captured all on the island but five Matoran and Zetian. She had Mana Ko rip the Turaga of Plantlife to pieces with their claws, and Matoran who tried to struggle out suffered the same fate. In the end, one hundred and fifty-two out of two hundred and ninety-six Matoran remained.