Dumaltri are a form of Matoran , only found on Kardrakon Nui . They are one of the only places that have never had any Toa, and have been left for dead by almost all the Great Beings . Expected to die off, the Matoran of Kardrakon Nui thrived for thousands of years, evolving into the tall beings they are now. They are strong enough that they can attack the Rahkshi the Makuta placed on the island, and often use them for armor.