"The great Toa is the same in body, in strength, and in speed. But his mind is gone. He has been attacked by the Makuta and enslaved by evil. His Great Mask of Power has been replaced with an infected mask, and the only way to bring him back is to take it off."
— Turaga Matau, Mata Nui Online Game
|Powers||Grants a Makuta control over wearer|
Bearer gains Mask Power
|Bearers||Toa Lewa (formerly)|
Many Rahi (formerly)
Some Matoran (formerly)
Infected Kanohi are Kanohi that have been tainted and corrupted by Kraata. The infection was sometimes referred to as the Madness on Mata Nui. An Infected Kanohi appears rusted and pitted. All masks but Legendary Masks are vulnerable to this infection. Although Makuta can infect masks themselves, they prefer to leave it to Kraata.
An infected Kanohi wearer is placed under the control of the Makuta who infected the mask. While infected, the user is still able to access their mask's power. For an Infected Kanohi to be cleansed, it requires the combined Elemental Powers of six Toa.
During the Great War on Mata Nui, Makuta Teridax fitted many Rahi with infected masks and had them guard the Kanohi and harass the Matoran. However, the Toa Mata succeeded in liberating most of them. When Teridax first confronted the Toa Mata in his Matoran form, his Kanohi Kraahkan took the form of an infected Kanohi Hau.
When the Rahkshi assaulted Mata Nui, Shadow Kraata were responsible for the infection of several Matoran.
- Toa Mata Lewa - Formerly; since removed
- Many different types of Rahi - Formerly; since uninfected
- Some Matoran of Mata Nui - Formerly; since uninfected
The infected Kanohi are notable for being the only BIONICLE masks that were hand-painted, and were only molded in the shape of a Hau. Two of these masks were available in the Muaka & Kane-Ra set, and sometimes (but very rarely) appeared in the randomly selected Kanohi packs of 2001.
- Since his Kanohi Kraahkan was taken from him, in the Toa Empire Alternate Universe Teridax wears a Kanohi Hau that appears infected.
|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|
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