Viomi

The Kanohi Viomi allows the wearer to become intangible and pass through solod objects. Also know as the Mask of Intangibility.

Great

 * Toa Kamahn Kynika
 * Toa Tritau (mutated)

Noble

 * Shahli; formerly; transformed when she became a Toa
 * Moratu; formerly; transformed when he became a Toa
 * Ronzo
 * Aku

Trivia

 * The Mask of Intangibility is a real mask in the Bionicle universe. I just made up what my idea of it's looks and name