Kopaka stepped away from Pohatu and activated the power of his mask, enabling him to peer through tons of stones into the network of caves within Mount Ihu. It was the work of moments to find a cavern in which there was a lone Kanohi Hau Nuva, the Mask of Shielding.
— Narration, BIONICLE Chronicles 4: Tales of the Masks
Akaku Nuva
Nuva Mask of X-Ray Vision/Mask of Vision
Power(s)Gave user(s) enhanced X-Ray Vison
Notable Wearer(s)The Toa Nuva
Pronunciationah-KAH-koo NOO-vah

The Akaku Nuva was the Kanohi Nuva Mask of X-Ray Vision, created when a destined Kanohi Akaku was dipped in Energized Protodermis and transformed. The Akaku Nuva gave its user and those nearby the power to see through solid objects and illusions. Akaku Nuva were fitted with telescopic lens to give the user(s) enhanced viewing. For some reason, this mask's power could not pierce the mist in Karda Nui or the domes of the Matoran Universe. The only beings able to activate this mask's power were Toa Nuva.

Example Usage[]

In BIONICLE Chronicles 4: Tales of the Masks, Kopaka used his Akaku Nuva to see through the side of Mount Ihu to locate a Hau Nuva.

Known Wearers[]


Akaku Nuva View

The view through an Akaku Nuva's eyepiece, as shown in Mask of Light.

Set Information[]

Akaku Nuva: The Great Mask of X-Ray Vision--Allows the user and those close by to see through walls and discover that which is concealed by physical means or illusion.[1]
  • A white Akaku Nuva was released in 2002 as part of the Kopaka Nuva canister set. The Akaku Nuva was also released in red, blue, green, brown, and black as part of the Mask Packs, representing the Kanohi Nuva collected by the other Toa Nuva. It also came in a pearl silver version to indicate the depowered form of Kopaka Nuva.
  • A white Akaku Nuva was released in 2008 with the Kopaka Nuva Phantoka set to represent the sky-adapted form his mask and armor assumed.


  • When Kopaka's Akaku Nuva changed into a sky-adapted form, its telescopic lens shifted to the left eye, as opposed to its usual right side.


Legendary Kanohi
VahiIgnikaMask of Creation
Great/Noble Kanohi
Toa Mata HauKaukauMiruKakamaPakariAkaku (AkiRua)
Toa Metru HunaRauMahikiKomauRuruMatatu
Toa Inika CalixEldaSuletuSanokKadinIden
Toa Mahri ArthronFaxonZatthGaraiVolitakTryna
Toa Hagah PehkuiMask of ClairvoyanceKualsiMask of EmulationMask of GrowthMask of Rahi Control
Karda Nui Makuta JutlinAvsaFelnasMohtrekShelekCrast
Other Kanohi Infected KanohiGolden KanohiCopper Mask of VictoryMask of Elemental Energy
AvohkiiKraahkanMask of Light and ShadowKirilOlisiRodeOlmak
Mask of IntangibilityMask of PossibilitiesMask of Psychometry
Mask of MutationMask of CharismaMask of HealingMask of Scavenging
Mask of AdaptationMask of AgingMask of Biomechanics
Mask of ConjuringMask of FusionMask of Incomprehension
Mask of ReboundingMask of Sensory AptitudeMask of Undeath
Kanohi Nuva
Toa Nuva Hau NuvaKaukau NuvaMiru NuvaKakama NuvaPakari NuvaAkaku Nuva (Aki NuvaRua Nuva)
KanohiKranaKanohi NuvaKrana-KalKraataKanokaRhotukaZamor SpheresSquidsGolden Armor