The Kanohi Huna was the Mask of Concealment. While in its Great form, it gave its user the power to turn completely invisible and grant them visual indetectability, but they still cast a shadow. The only difference between its Great and Noble forms was that the Noble form had a shorter duration of power, unlike the Great, which could last longer. A Huna-wearer could only be detected by someone seeing their shadow or the usage of an Arthron, Elda or Rode. Huna were carved out of a mixture of the following Kanohi on Metru Nui: * Enlargement * Contraction * Freezing