The Kanohi Akaku was a type of Kanohi mask with the power of X-Ray Vision. The Great Akaku allowed its user to see through opaque objects. Many Great Akaku were fitted with an assemblage of three lenses over the right eye that provided telescopic vision, which complemented the mask's power. Akaku could be created from Kanoka disks with the regeneration and teleport powers. The Akaku Nuva was a more powerful version of the Akaku.
The Akaku was the Great Mask of X-Ray Vision. It allowed the user to see through walls and discover that which was hidden.1
The Kanohi Akaku was the Great Mask of X-Ray Vision. It allowed the user to see through walls and discover that which was hidden.2
The Kanohi Akaku was the Mask of X-ray Vision, which allowed the wearer to see through solid objects. Many Akaku were fitted with special lenses that allowed for telescopic vision as well.3
Akaku were created from Kanoka disks with the regeneration and teleport powers.4
Telescopic vision was built into the Akaku, even powerless ones worn by Matoran.5 This telescoping eye was a mechanical enhancement that allowed the user to see better, since vision was important to how the mask was used.6
Users of the Akaku were able to control how many layers of material they saw through.7
- Greg Farshtey didn't see much difference in power level between the Great Ruru and Akaku.8