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"Pohatu lost track of how far they walked. He was beginning to wonder if they would be able to find their way out again, then reminded himself that Kopaka's Mask of X-Ray Vision would show them the way."
— Narrator, Tales of the Masks
|Title||Kanohi Nuva of X-Ray Vision|
|Powers||Enhanced X-Ray Vision|
|Bearers||The Toa Nuva|
The Akaku Nuva is the Kanohi Nuva Mask of X-Ray Vision, created when a destined Kanohi Akaku is dipped in Energized Protodermis. It allows its user and those nearby to see through objects and illusions. They are fitted with a telescopic lens to give the user(s) enhanced viewing. For some reason, this mask's power cannot pierce certain materials, such as Karda Nui's mist and the Metru Nui dome. The only beings able to use this mask are Toa Nuva.
- Toa Nuva Tahu - Former secondary mask; destroyed during the sinking of Ta-Koro
- Toa Nuva Gali - Secondary mask
- Toa Nuva Lewa - Secondary mask
- Toa Nuva Pohatu - Secondary mask
- Toa Nuva Onua - Secondary mask
- Toa Nuva Kopaka - Primary mask
|A normal Akaku Nuva|
|An Akaku Nuva, adjusted for an aerial environment via the Adaptive Armor.|
- When Kopaka was a Toa Nuva without an Adaptive Armor the telescopic lens were on the right side of his mask, but when he was given the Adaptive Armor the lens are on the left side of his mask.
|Legendary||Ignika | Vahi | Mask of Creation|
|Great/Noble||Hau | Kaukau | Miru | Kakama | Pakari | Akaku | Aki | Rua|
Huna | Rau | Mahiki | Komau | Ruru | Matatu
Calix | Elda | Suletu | Sanok | Kadin | Iden
Arthron | Faxon | Zatth | Garai | Volitak | Tryna
Jutlin | Avsa | Felnas | Mohtrek | Shelek | Crast | Mask of Mutation | Mask of Scavenging
Pehkui | Mask of Clairvoyance | Kualsi | Mask of Emulation | Mask of Growth | Mask of Rahi Control
Avohkii | Kraahkan | Mask of Light and Shadow
Mask of Psychometry | Rode | Olmak | Mask of Charisma
Olisi | Kiril | Mask of Intangibility | Mask of Possibilities | Mask of Elemental Energy
|Nuva||Hau Nuva | Kaukau Nuva | Miru Nuva | Kakama Nuva | Pakari Nuva | Akaku Nuva | Aki Nuva | Rua Nuva|
|Others||Golden Kanohi | Infected Kanohi | Mask of Victory | Other Kanohi|
|Characters | Sapient Species | Locations | Flora | Creatures | Rahi | Objects | Powers | Vehicles | Society | Events|
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