Ketar
Ketar is an Elemental Creature of Stone native to Okoto, bearing neon yellow, silver, and brown coloration. Armed with crystal blades, Ketar is devoted to protecting the Region of Stone and aiding the Toa in their missions on the island.

Ketar is the Creature of Stone, the physical embodiment of that element. Millennia ago, when OkotoOkotoOkoto is a world whose known inhabitants include the Toa, the Mask makers, and the Protectors. was first created, Ketar and the five other Elemental Creatures were formed from the island's elements. Ketar took its place among the others as one of seven such beings: Agil the Creature of Light, Akida the Creature of Water, Ikir the Creature of Fire, Melum the Creature of Ice, Terak the Creature of Earth, and Uxar the Creature of Jungle.
When the Protectors of Okoto set out to obtain Elemental Crystals capable of powering the Golden Masks that would later be worn by the Toa, the Protector Kerato received his crystal from Ketar.
Ketar was destined to unite with Pohatu, Master of Stone, but the two shared the weakest bond of any Toa and Creature. Umarak the Hunter observed this and singled out the Creature of Stone as his target while seeking the Mask of Control. Inside the Labyrinth of Control, where the mask lay hidden in a chamber that required all six Toa united with their Creatures to open, Pohatu hesitated to unite with Ketar. Umarak seized the moment, forcibly uniting with the Creature of Stone and entering the chamber to claim the mask.
At the edge of the Labyrinth, Umarak threw Ketar from a cliff, forcing Pohatu to choose between rescuing the Creature and reclaiming the mask. Pohatu chose to save Ketar, and Umarak escaped with the Mask of Control. The Toa then departed the Labyrinth to return to Okoto.
Sources
- WikiKetar, Bionicle Fandom wiki cross-reference
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Followed from this entry
Also in Stone

The Golden Mask of Stone
The Golden Mask of Stone was the elemental Kanohi forged by Ekimu for Pohatu, Master of Stone, recovered from a temple in the Region of Stone, stolen by a pair of Skull Scorpios in the city's graveyard, and repaired by Ekimu.

Ako
Ako was a young villager from the Region of Stone on Okoto, in the 2015 reboot continuity, who was carried off with Oda to the Skull Raiders' underground city and rescued by Ekimu and the Toa.

The Elemental Sandstone Blaster
The Elemental Sandstone Blaster was the close-range melee and sand-blast weapon carried by Nilkuu, Protector of Stone, in the 2015 reboot story, and the tool he used to free a villager and a giant snake from Skull Spider control.
Kerato, Ancient Protector of Stone of Okoto
Protector of Stone in BIONICLE's 2015 reboot, who followed Ekimu to Capital City when the first age ended, went to Ketar for the crystal of Stone, and left an office that reached Nilkuu.
Melea, Stone Villager of Okoto
Melea was a villager from the Region of Stone whose nephews Ako and Oda vanished during her family's relocation to the City of the Mask Makers, forcing Ekimu and the Toa into a rescue against the Skull Raiders.
Mentioned in18 entries
Agil, Creature of Light
Agil was the hawk-like Elemental Creature of Light from the 2016 reboot story, bonded to Ekimu, who spied on Umarak for the Mask Maker and merged with him to free the Toa from the Destroyer's shadow.
Gali, Master of Water: The Toa Who Closed the Rift
Gali of Okoto, from the 2015 reboot, was the Master of Water of the Toa, the team's mediator at the City of the Mask Makers, and the Toa pulled into the Shadow Realm who came back knowing how to banish Makuta again.
Kerato, Ancient Protector of Stone of Okoto
Protector of Stone in BIONICLE's 2015 reboot, who followed Ekimu to Capital City when the first age ended, went to Ketar for the crystal of Stone, and left an office that reached Nilkuu.
Kopaka, Master of Ice: The Chivalrous Toa of Okoto
Kopaka of Okoto, in the 2015 reboot continuity, was the Master of Ice summoned by the Protectors, the cold perfectionist who found his Golden Mask with Izotor and clashed with Tahu over who should lead.
Lewa, Master of Jungle: The Daredevil Toa of Okoto
Lewa of Okoto was the Master of Jungle summoned by the Protectors, the rebellious flier who quested for the Mask of Jungle in the Region of Jungle and bonded with Uxar in the second wave.
Onua, Master of Earth: The Sage Toa of Okoto
Onua of Okoto was the Master of Earth summoned by the Protectors, the quiet sage who separated Tahu and Kopaka at the Ancient City and felled the Lord of Skull Spiders with his Earthquake Hammer.
Onua, Uniter of Earth
Onua's second-stage form on Okoto, the Uniter of Earth, equipped with the Drill Hammer and the Unity Mask of Earth, paired with Terak the Creature of Earth for the campaign that hunted the Mask of Control.
Pohatu, Master of Stone: The Stubborn Toa of Okoto
Pohatu of Okoto was the Master of Stone summoned by the Protectors, the stubborn sandstorm-rider guided by Nilkuu through the Region of Stone whose hesitation at the Labyrinth cost the team the Mask of Control.
Region of Jungle
The rainforest region of Okoto, home of the Jungle Tribe and the Protector of Jungle, ground over which Lewa sought the Golden Mask of Jungle and bonded with Uxar, and the coast from which the Labyrinth of Control rose offshore.
Tahu, Master of Fire: Leader of the Toa of Okoto
Tahu of Okoto was the Master of Fire summoned by the Protectors, the hot-tempered would-be leader of the Toa who opened the Labyrinth of Control and held the line at the Black Volcano.
The Elemental Creatures of Okoto
The six elemental animals of Okoto, partnered with the Toa to recover the Mask of Control, joined by Agil the Creature of Light at Ekimu's side. Part of the 2015 to 2016 reboot continuity.
The Golden Unity Masks of Okoto
The Golden Masks of Unity from the 2015 reboot, guarded by the Elemental Creatures and used by the Toa to unite with them in the hunt for the Mask of Control and the final battle with Makuta.
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