The Kanohi Huna was the Mask of Concealment. The Great Huna could make its user invisible, although he or she would still cast a shadow. The noble version of this mask had the same effect but with a shorter duration.
The Great Kanohi Huna allowed its user to turn invisible, although the user would still cast a shadow.
When Vakama turned invisible, the disk launcher he carried turned invisible as well. However, it turned visible as soon as he let go of it.
Huna were created from Kanoka disks with the enlarge, shrink, and freeze powers.