Koro

The Koros were the six MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. villages established on the island of Mata NuiMata Nui (Location)An island created by accident on the Great Spirit's face, home to the Matoran for a thousand years. by the Toa MetruToa Metru and Toa HordikaSix Matoran elevated by Lhikan to save their city, mutated by Visorak venom, and restored in time to deliver the population to safety. following the Great RescueThe Great RescueThe campaign that brought the mutated Toa Metru back into Visorak-occupied Metru Nui to recover the sealed Matoran spheres, find Keetongu, and break the hordes' grip on the city long enough to evacuate every Matoran to the surface of Mata Nui.. Each Koro corresponded to one of the six elemental MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. tribes, was guided by a TuragaTuragaFormer Toa who fulfilled their destiny and transformed into leaders. Turaga wield Noble Kanohi masks and weakened elemental powers, guiding their communities., and was anchored by a SuvaSuvaSuva were the sacred shrines of Matoran civilisation, holding Toa Stones, Kanohi, and Nuva symbols across Mata Nui, Metru Nui, and beyond. shrine linked to the region's ToaToa (2001)Biomechanical heroes bonded to elemental powers and masks. Not born, but chosen and transformed..

Establishment after the Great Rescue#

When the Toa MetruToa Metru and Toa HordikaSix Matoran elevated by Lhikan to save their city, mutated by Visorak venom, and restored in time to deliver the population to safety. completed the Great RescueThe Great RescueThe campaign that brought the mutated Toa Metru back into Visorak-occupied Metru Nui to recover the sealed Matoran spheres, find Keetongu, and break the hordes' grip on the city long enough to evacuate every Matoran to the surface of Mata Nui. and transported the MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. Spheres to Mata NuiMata Nui (Location)An island created by accident on the Great Spirit's face, home to the Matoran for a thousand years., the six Toa divided to scout the island for settlement sites suited to each elemental tribe. NokamaNokamaNokama served as Toa Metru of Water, endured the Hordika mutation, and led Ga-Koro and later Ga-Metru as Turaga through three eras. remained at the landing beach, which was suited to the Ga-MatoranGa-MatoranThe Water-element Matoran of Ga-Metru and Ga-Koro, exclusively female, who taught the schools of Metru Nui and crewed the boats and bridges of the Mata Nui coast. and became the site of Ga-KoroGa-KoroGa-Koro is a village on the island of Mata Nui, inhabited by the Ga-Matoran and associated with both Nokama and Gali. The settlement was formerly under the power of Teridax.. PohatuPohatuPohatu was the Toa Mata and Toa Nuva of Stone, guardian of Po-Wahi, whose speed and steady humour anchored the team through every era of the Matoran Universe. moved inland to the rocky plateaus that would become Po-WahiPo-WahiPo-Wahi is a region of the island of Mata Nui, inhabited by Po-Matoran and Rahi. The territory formerly fell under the control of Teridax.; OnuaOnuaOnua was the Toa Mata and Toa Nuva of Earth, a quiet, deliberate warrior whose patience and underground mastery anchored his team across the Matoran Universe. descended into the underground territory of Onu-WahiOnu-WahiThe underground kingdom of Mata Nui, home to the Onu-Matoran and Toa Onua.; TahuTahu (2001)Tahu was the Toa Mata of Fire and leader of the team, from his first landing on Ta-Wahi Beach to the destruction of Teridax's Rahkshi army on Bara Magna with the Golden Armor. ascended toward the Mangai VolcanoMangai VolcanoThe central volcano of Ta-Wahi, formed by Mata Nui's damaged camouflage systems and used by Teridax as cover for his hidden lair Mangaia.; KopakaKopakaKopaka was the Toa Nuva of Ice, deputy commander of the Toa Mata, and one of the six warriors crafted on Artakha to defend the Matoran Universe. traveled north to the snowfields of Ko-WahiKo-WahiKo-Wahi is a region situated directly above Ko-Metru, inhabited by Matoran, Turaga, Toa, and Rahi. It was formerly under the control of Teridax.; and MatauMatauA former Le-Metru test driver who became a Toa Metru, Matau wielded air, illusion, and shape-shifting before sacrificing his Toa power to wake the sleeping Matoran. made his way through the jungle of Le-WahiLe-WahiLe-Wahi is a region on the island of Mata Nui, inhabited by the Le-Matoran and Rahi. Formerly subject to the power of Teridax, the region is no longer under that influence.. Each Toa marked the site of his chosen Koro and laid the foundations of its SuvaSuvaSuva were the sacred shrines of Matoran civilisation, holding Toa Stones, Kanohi, and Nuva symbols across Mata Nui, Metru Nui, and beyond..

Following the Toa MetruMetruIn the Matoran language a metru was a single district of Metru Nui; the city was divided into six such districts, one for each element, and the term covered both the place and the elemental community that lived in it.'s transformation into TuragaTuragaFormer Toa who fulfilled their destiny and transformed into leaders. Turaga wield Noble Kanohi masks and weakened elemental powers, guiding their communities., they retained authority over the new settlements and applied their knowledge of Metru NuiMetru NuiThe city beneath Mata Nui functions as the Great Spirit's brain, housing the Matoran whose labor keeps the god alive. to the planning of the villages. VakamaVakamaA Ta-Metru maskmaker transformed into the Toa Metru of Fire, leader of his team through the Visorak war, and Turaga of Ta-Koro for a thousand years., OnewaOnewaOnewa served as Toa Metru of Stone, led Po-Koro through the Dark Time, and constructed the Metru Nui statue honoring the fallen Toa Mahri Matoro., NokamaNokamaNokama served as Toa Metru of Water, endured the Hordika mutation, and led Ga-Koro and later Ga-Metru as Turaga through three eras., WhenuaWhenuaToa Metru of Earth and later Turaga of Onu-Koro, formerly an Onu-Metru archivist whose career in the Archives shaped his role across the rescue of Metru Nui and the long residency on Mata Nui., NujuNujuNuju served as a Ko-Metru seer, Toa Metru of Ice, and Turaga of Ko-Koro who spoke only in bird calls translated by Matoro., and MatauMatauA former Le-Metru test driver who became a Toa Metru, Matau wielded air, illusion, and shape-shifting before sacrificing his Toa power to wake the sleeping Matoran. directed construction, mediated disputes, and preserved the cultural memory of the MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. homeland.

The Six Primary Koros#

Ta-KoroTa-KoroTa-Koro was a settlement located in Ta-Wahi, home to the Ta-Matoran, Tahu, and Vakama, and formerly connected to Teridax. The settlement was ultimately destroyed. was situated in a lava crater near the Mangai VolcanoMangai VolcanoThe central volcano of Ta-Wahi, formed by Mata Nui's damaged camouflage systems and used by Teridax as cover for his hidden lair Mangaia., chosen by VakamaVakamaA Ta-Metru maskmaker transformed into the Toa Metru of Fire, leader of his team through the Visorak war, and Turaga of Ta-Koro for a thousand years. for its defensible high ground. Its stone towers were designed to withstand ash storms and RahiRahiThe Rahi were the biomechanical wildlife of the Matoran Universe, built largely by the Brotherhood of Makuta, ranging from background fauna to engineered war beasts. incursions. The Ta-Koro GuardTa-Koro GuardThe Ta-Koro Guard was the largest standing Matoran fighting force on Mata Nui, captained by Jaller and active from the early Rahi conflicts through the return to Metru Nui., under the command of Captain JallerJallerJaller served as Captain of the Ta-Koro Guard, led the Toa Inika to Voya Nui, and commanded the Toa Mahri through the recovery of the Mask of Life., patrolled the approaches. Within the village stood the Wall of HistoryWall of HistoryA series of inscribed walls in Ta-Koro that recorded Matoran life on Mata Nui, maintained by successive Chroniclers and destroyed when the Bohrok cleansed the island., on which VakamaVakamaA Ta-Metru maskmaker transformed into the Toa Metru of Fire, leader of his team through the Visorak war, and Turaga of Ta-Koro for a thousand years.'s prophetic visions were carved.

Ga-KoroGa-KoroGa-Koro is a village on the island of Mata Nui, inhabited by the Ga-Matoran and associated with both Nokama and Gali. The settlement was formerly under the power of Teridax. was built on stilts over Lake NahoLake NahoThe primary water body of Ga-Wahi, named after a fallen Toa who never lived to see his namesake outlast the island itself. at the original MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. landing site. Its structures were woven from driftwood and sealed coral. Ga-MatoranGa-MatoranThe Water-element Matoran of Ga-Metru and Ga-Koro, exclusively female, who taught the schools of Metru Nui and crewed the boats and bridges of the Mata Nui coast. such as MackuMackuMacku was a Ga-Matoran of Metru Nui and later Ga-Koro, attendant to Turaga Nokama, Kolhii partner to Hahli at the championship at Ta-Koro, and a member of the Chronicler's Company. and HahliHahliA Ga-Matoran scholar who rose to become Chronicler of Mata Nui, then Toa Inika, then Toa Mahri of Water during the final crises of the Matoran Universe. navigated the surrounding waters by canoe to fish and recover KanokaKanoka DisksMetru Nui's most versatile artifact: flying disks equally at home in sport, combat, and crafting.. The village's SuvaSuvaSuva were the sacred shrines of Matoran civilisation, holding Toa Stones, Kanohi, and Nuva symbols across Mata Nui, Metru Nui, and beyond. stood at the lake's edge, partially submerged.

Po-KoroPo-KoroPo-Koro was the Po-Matoran village in Po-Wahi, led by Turaga Onewa and guarded by Toa Pohatu, reached through a single statue-lined road called the Path of Prophecies. sat amid the desert wasteland of Po-WahiPo-WahiPo-Wahi is a region of the island of Mata Nui, inhabited by Po-Matoran and Rahi. The territory formerly fell under the control of Teridax.. Its MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. were sculptors and athletes whose lives revolved around stonework and the sport of KolhiiKolhiiKolhii was the inter-village athletic contest of Mata Nui, descended from the earlier Akilini of Metru Nui and played by all six Koro until the island's evacuation.. Le-KoroLe-KoroLe-Koro is a village situated within Le-Wahi, inhabited by the Le-Matoran and home to Turaga Matau and Toa Lewa. The settlement was once held under the control of Teridax. was constructed in the canopy of Le-WahiLe-WahiLe-Wahi is a region on the island of Mata Nui, inhabited by the Le-Matoran and Rahi. Formerly subject to the power of Teridax, the region is no longer under that influence., with platforms and tree-bridges linked by woven cable. Ko-KoroKo-KoroKo-Koro is a location in Ko-Wahi, home to the Ko-Matoran and associated with both Nuju and Kopaka. Its exact size is unknown. was a settlement of frost-laced towers in the high reaches of Ko-WahiKo-WahiKo-Wahi is a region situated directly above Ko-Metru, inhabited by Matoran, Turaga, Toa, and Rahi. It was formerly under the control of Teridax., built for stillness and inhabited by scholars. Onu-KoroOnu-KoroOnu-Koro was the earth engineers' city, where underground isolation created one of Mata Nui's most self-sufficient settlements, until the Bohrok came. lay deep underground, lit by lightstonesLightstoneGlowing crystals that powered Onu-Koro's mines and revealed secrets beneath Mata Nui. and connected to the ArchivesThe Archives of Metru NuiThe Archives of Onu-Metru were the central repository of Matoran knowledge and Rahi specimens, maintained by the Archivist Corps beneath the city's surface. beneath Metru NuiMetru NuiThe city beneath Mata Nui functions as the Great Spirit's brain, housing the Matoran whose labor keeps the god alive. by the Po-WahiPo-WahiPo-Wahi is a region of the island of Mata Nui, inhabited by Po-Matoran and Rahi. The territory formerly fell under the control of Teridax. tunnels.

Each Koro held a SuvaSuvaSuva were the sacred shrines of Matoran civilisation, holding Toa Stones, Kanohi, and Nuva symbols across Mata Nui, Metru Nui, and beyond. at its centre. The SuvaSuvaSuva were the sacred shrines of Matoran civilisation, holding Toa Stones, Kanohi, and Nuva symbols across Mata Nui, Metru Nui, and beyond. was both shrine and conduit. In Ga-MetruGa-MetruGa-Metru is a district of Metru Nui, home to the Ga-Matoran and the Bordakh., a SuvaSuvaSuva were the sacred shrines of Matoran civilisation, holding Toa Stones, Kanohi, and Nuva symbols across Mata Nui, Metru Nui, and beyond. had activated upon receiving six Toa StonesToa StonesSmall stones charged with a portion of a Toa's power, used to awaken the dormant Toa Power within a destined Matoran and elevate them into a Toa. to power the transformation of the MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. chosen by LhikanLhikanToa of Fire, leader of the Toa Mangai, and the last Toa of Metru Nui, who surrendered his Toa Power to create the Toa Metru and died defending Vakama., as recorded in BIONICLE Adventures 4: Legends of Metru NuiLegends of Metru NuiLhikan's capture by Nidhiki and Krekka, the awakening of the six Toa Metru, the discovery that Turaga Dume had been replaced by Teridax, the Coliseum betrayal, and the duel above the Silver Sea that ended with the city sealed and the Matoran asleep.. On Mata NuiMata Nui (Location)An island created by accident on the Great Spirit's face, home to the Matoran for a thousand years., each Koro's SuvaSuvaSuva were the sacred shrines of Matoran civilisation, holding Toa Stones, Kanohi, and Nuva symbols across Mata Nui, Metru Nui, and beyond. served as the bond between its MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. and the ToaToa (2001)Biomechanical heroes bonded to elemental powers and masks. Not born, but chosen and transformed. of their element.

Elements and Regional Isolation#

The Koros developed in relative isolation from one another. Each was shaped by the environment of its WahiWahiThe Matoran word for region. The six Wahi of Mata Nui were the six elemental territories that made up the island before the Bohrok cleared its surface. and accumulated distinct architectural conventions, customs, and even regional dialects of the Matoran LanguageMatoran LanguageThe written and spoken language of the Matoran Universe, with its own alphabet, measurements, and regional dialects.. Po-MatoranPo-MatoranThe Stone-element Matoran of Po-Metru and Po-Koro, carvers and quarry workers, the most athletic of the Matoran types and the population behind the Kohlii and Akilini circuits. became expert quarriers and stoneworkers. Onu-MatoranOnu-MatoranEarth-wielding Matoran of the deep who adapted to darkness and built the Matoran Universe's defensive cavalry. mastered tunnel navigation and the operation of UssalUssalSix-legged crustacean Rahi domesticated across Metru Nui and Mata Nui for cargo, mining, and sport. Backbone of Matoran labor. crab transports. Ga-MatoranGa-MatoranThe Water-element Matoran of Ga-Metru and Ga-Koro, exclusively female, who taught the schools of Metru Nui and crewed the boats and bridges of the Mata Nui coast. developed an enduring tradition of maritime craft.

Inter-Koro travel was rare. The TuragaTuragaFormer Toa who fulfilled their destiny and transformed into leaders. Turaga wield Noble Kanohi masks and weakened elemental powers, guiding their communities. met as a council on matters of shared concern, but no central authority and no standing inter-Koro army existed. The defensive posture of each village was calibrated for the RahiRahiThe Rahi were the biomechanical wildlife of the Matoran Universe, built largely by the Brotherhood of Makuta, ranging from background fauna to engineered war beasts. of its region rather than for coordinated external assault. When LewaLewaToa of Air, member of the Toa Mata and Toa Nuva, whose career was marked by repeated possession, body theft, and aerial campaigns from Le-Wahi to Karda Nui. carried JallerJallerJaller served as Captain of the Ta-Koro Guard, led the Toa Inika to Voya Nui, and commanded the Toa Mahri through the recovery of the Mask of Life. and TakuaTakuaAn Av-Matoran hidden on Mata Nui as a Ta-Matoran, who gathered the Toa Stones, served as Chronicler, and ultimately accepted the Avohkii to become Takanuva, the Toa of Light. toward Ko-KoroKo-KoroKo-Koro is a location in Ko-Wahi, home to the Ko-Matoran and associated with both Nuju and Kopaka. Its exact size is unknown. on a GukkoGukkoA large, swift bird-like Rahi domesticated by the Le-Matoran as the mount of the Gukko Force, the second-largest Matoran military unit on Mata Nui. during the events of the Mask of Light, the flight crossed several regions that the two MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. had never previously seen.

This decentralised structure preserved MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. life through the years following the Great RescueThe Great RescueThe campaign that brought the mutated Toa Metru back into Visorak-occupied Metru Nui to recover the sealed Matoran spheres, find Keetongu, and break the hordes' grip on the city long enough to evacuate every Matoran to the surface of Mata Nui. but offered limited adaptability under coordinated attack.

The Bohrok Invasion#

When the BahragBahragCahdok and Gahdok were the twin queens of the Bohrok, sealed in a Protodermis cage by the Toa Mata and later released to finish their cleansing of Mata Nui. queens awoke, they released the BohrokBohrokHive-minded mechanical creatures designed to reshape worlds, the Bohrok represent a threat the Toa Mata never expected. swarms across Mata NuiMata Nui (Location)An island created by accident on the Great Spirit's face, home to the Matoran for a thousand years.. The TahnokTahnokFire-element Bohrok swarms from Mata Nui, controlled by krana and armed with Fire Shields., PahrakPahrakStone-aligned Bohrok swarm units that forced the Toa Mata to realize they couldn't win through isolated victories., LehvakLehvakAcid-wielding Bohrok that dissolve obstacles as easily as enemies., GahlokGahlokWater-element Bohrok swarms that flooded Mata Nui's aquatic zones with relentless purpose., KohrakKohrakIce-wielding Bohrok from the 2002 original wave, the foundational design for all subsequent Bohrok variants., and NuhvokNuhvokThe earth-dwelling Bohrok whose rigid nature made them dangerously predictable. struck each of the six WahiWahiThe Matoran word for region. The six Wahi of Mata Nui were the six elemental territories that made up the island before the Bohrok cleared its surface. in synchronised waves, overwhelming local defences before coordinated resistance could form. JallerJallerJaller served as Captain of the Ta-Koro Guard, led the Toa Inika to Voya Nui, and commanded the Toa Mahri through the recovery of the Mask of Life. later observed that the simultaneous RahkshiRahkshiArmor suits powered by parasitic Kraata, Rahkshi were Teridax's most effective soldiers and among Bionicle's most visually iconic early enemies. attack on Metru NuiMetru NuiThe city beneath Mata Nui functions as the Great Spirit's brain, housing the Matoran whose labor keeps the god alive. had been the principal reason the swarms reached the surface so successfully.

By the conclusion of the BohrokBohrokHive-minded mechanical creatures designed to reshape worlds, the Bohrok represent a threat the Toa Mata never expected. campaign, every Koro had sustained severe damage. Ta-KoroTa-KoroTa-Koro was a settlement located in Ta-Wahi, home to the Ta-Matoran, Tahu, and Vakama, and formerly connected to Teridax. The settlement was ultimately destroyed. was buried under ash from a MangaiMangai VolcanoThe central volcano of Ta-Wahi, formed by Mata Nui's damaged camouflage systems and used by Teridax as cover for his hidden lair Mangaia. eruption. Ga-KoroGa-KoroGa-Koro is a village on the island of Mata Nui, inhabited by the Ga-Matoran and associated with both Nokama and Gali. The settlement was formerly under the power of Teridax. was largely submerged. Po-KoroPo-KoroPo-Koro was the Po-Matoran village in Po-Wahi, led by Turaga Onewa and guarded by Toa Pohatu, reached through a single statue-lined road called the Path of Prophecies.'s stone walls were flattened. Onu-KoroOnu-KoroOnu-Koro was the earth engineers' city, where underground isolation created one of Mata Nui's most self-sufficient settlements, until the Bohrok came.'s tunnels were collapsed and sealed. Le-KoroLe-KoroLe-Koro is a village situated within Le-Wahi, inhabited by the Le-Matoran and home to Turaga Matau and Toa Lewa. The settlement was once held under the control of Teridax.'s canopy platforms were broken. Ko-KoroKo-KoroKo-Koro is a location in Ko-Wahi, home to the Ko-Matoran and associated with both Nuju and Kopaka. Its exact size is unknown.'s ice sculptures were reduced to bare rock. The SuvaSuvaSuva were the sacred shrines of Matoran civilisation, holding Toa Stones, Kanohi, and Nuva symbols across Mata Nui, Metru Nui, and beyond. of each village were among the structures damaged or destroyed.

Many MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. survived by fleeing into the wilderness. GaardusGaardusA Ta-Matoran turned living weapon by exiled Nynrah Ghosts, Gaardus survived his tormentors, the fall of the Matoran universe, and his own resurrection aboard the Red Star to become the most reluctant teleporter in the reformed world., a former Le-MatoranLe-MatoranGreen-powered Matoran obsessed with thrills and transport. They're basically Bionicle's daredevils., withdrew into the jungle after refusing the KranaKranaThe small organic symbiotes that controlled the Bohrok, produced in eight breeds plus a mutated variant, and the actual living component of every swarm-class chassis. sent to control his village. Following the Toa Mata's victory over the BahragBahragCahdok and Gahdok were the twin queens of the Bohrok, sealed in a Protodermis cage by the Toa Mata and later released to finish their cleansing of Mata Nui. and their transformation into the Toa NuvaToa NuvaThe form the Toa Mata took after stepping into the Energized Protodermis beneath the Bahrag, with new masks, new tools, and the elemental scale to fight Karda Nui., the Koros were rebuilt under the direction of the TuragaTuragaFormer Toa who fulfilled their destiny and transformed into leaders. Turaga wield Noble Kanohi masks and weakened elemental powers, guiding their communities..

A Note on De-Koro#

De-KoroDe-KoroDe-Koro was the De-Matoran settlement on the Tren Krom Peninsula, kept intentionally quiet because loud noise could injure its acoustically sensitive residents. was a canonical settlement of the De-MatoranDe-MatoranMatoran with Sonics powers who valued silence so deeply that they didn't welcome Toa and the conflict they bring., the MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. of Sonics. It was located on the Tren Krom PeninsulaThe Tren Krom PeninsulaThe Tren Krom Peninsula was a rocky strip of the Northern Continent ruled by Makuta Gorast, riddled with acid falls and Razor Crystal cliffs, and home to Ko, Ta, and De-Matoran villages., not on the island of Mata NuiMata Nui (Location)An island created by accident on the Great Spirit's face, home to the Matoran for a thousand years., and was home to figures including KrakuaKrakuaA Toa of Sonics from De-Koro who served the Order of Mata Nui and delivered a devastating prophecy to Vakama.. De-KoroDe-KoroDe-Koro was the De-Matoran settlement on the Tren Krom Peninsula, kept intentionally quiet because loud noise could injure its acoustically sensitive residents. was not part of the six-Koro Mata NuiMata Nui (Location)An island created by accident on the Great Spirit's face, home to the Matoran for a thousand years. system.

No canonical seventh Mata NuiMata Nui (Location)An island created by accident on the Great Spirit's face, home to the Matoran for a thousand years. Koro for outcasts existed. The Koro structure on Mata NuiMata Nui (Location)An island created by accident on the Great Spirit's face, home to the Matoran for a thousand years. was constrained to the six elemental tribes resident on the island, paired with one TuragaTuragaFormer Toa who fulfilled their destiny and transformed into leaders. Turaga wield Noble Kanohi masks and weakened elemental powers, guiding their communities. and one ToaToa (2001)Biomechanical heroes bonded to elemental powers and masks. Not born, but chosen and transformed. per region.

Inconsistencies in the Surviving Record#

The interval between the Toa MetruToa Metru and Toa HordikaSix Matoran elevated by Lhikan to save their city, mutated by Visorak venom, and restored in time to deliver the population to safety.'s freeing of the MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. from their canisters and the operational founding of the Koros is imprecisely documented. BIONICLE Adventures 6: Maze of Shadows implies that the Toa scouted Koro sites while the MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. were still in recovery, suggesting that initial construction overlapped with the awakening period.

Population and architectural descriptions of Po-KoroPo-KoroPo-Koro was the Po-Matoran village in Po-Wahi, led by Turaga Onewa and guarded by Toa Pohatu, reached through a single statue-lined road called the Path of Prophecies. vary across sources. Some accounts describe it as a loose collection of scavenged-material huts, while BIONICLE Chronicles 2: Beware the BohrokThe Bohrok WarThe campaign of the Toa Mata against the six Bohrok swarms on the island of Mata Nui, ending in the sealing of the Bahrag and the Toa's transformation into the Toa Nuva. depicts it as a large settlement with organised defences against PahrakPahrakStone-aligned Bohrok swarm units that forced the Toa Mata to realize they couldn't win through isolated victories. assaults and a population active in agriculture and KolhiiKolhiiKolhii was the inter-village athletic contest of Mata Nui, descended from the earlier Akilini of Metru Nui and played by all six Koro until the island's evacuation.. The extent of Po-KoroPo-KoroPo-Koro was the Po-Matoran village in Po-Wahi, led by Turaga Onewa and guarded by Toa Pohatu, reached through a single statue-lined road called the Path of Prophecies.'s reconstruction by the time of the RahkshiRahkshiArmor suits powered by parasitic Kraata, Rahkshi were Teridax's most effective soldiers and among Bionicle's most visually iconic early enemies. attacks is similarly uncertain. BIONICLE Chronicles 4: Tales of the MasksThe Quests for the Kanohi NuvaThe six expeditions through which the Toa Nuva recovered their Great Masks of Power after the Bohrok-Kal crisis, told to the council that decided whether they had earned the truth about Metru Nui. depicts KopakaKopakaKopaka was the Toa Nuva of Ice, deputy commander of the Toa Mata, and one of the six warriors crafted on Artakha to defend the Matoran Universe. delivering the Hau NuvaHau NuvaThe Hau Nuva was the Toa Nuva variant of the Mask of Shielding, capable of protecting both wearer and nearby allies from anticipated physical attack. to OnewaOnewaOnewa served as Toa Metru of Stone, led Po-Koro through the Dark Time, and constructed the Metru Nui statue honoring the fallen Toa Mahri Matoro. in Po-KoroPo-KoroPo-Koro was the Po-Matoran village in Po-Wahi, led by Turaga Onewa and guarded by Toa Pohatu, reached through a single statue-lined road called the Path of Prophecies. without comment on the state of repairs.

These gaps are products of fragmentary records rather than canonical contradiction.

Significance#

The Koros served as the structural and cultural foundation of MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. life on Mata NuiMata Nui (Location)An island created by accident on the Great Spirit's face, home to the Matoran for a thousand years. for the millennium between the Great RescueThe Great RescueThe campaign that brought the mutated Toa Metru back into Visorak-occupied Metru Nui to recover the sealed Matoran spheres, find Keetongu, and break the hordes' grip on the city long enough to evacuate every Matoran to the surface of Mata Nui. and the eventual return to Metru NuiMetru NuiThe city beneath Mata Nui functions as the Great Spirit's brain, housing the Matoran whose labor keeps the god alive.. Their establishment restored a familiar civic structure to a population that had endured imprisonment in canisters and the loss of all prior memory. Each Koro functioned as a centre of survival, governance, and the preservation of elemental tradition.

The BohrokBohrokHive-minded mechanical creatures designed to reshape worlds, the Bohrok represent a threat the Toa Mata never expected. invasion marked the end of the relatively stable era the Koros had defined. Reign of ShadowsReign of ShadowsThe year Teridax ruled the Matoran Universe from inside Mata Nui's body, and the scattered resistance plots that ran against him until the Great Spirit returned from Bara Magna. later records TahuTahu (2001)Tahu was the Toa Mata of Fire and leader of the team, from his first landing on Ta-Wahi Beach to the destruction of Teridax's Rahkshi army on Bara Magna with the Golden Armor. sitting in the ruins of KarzahniKarzahniA region of the Matoran Universe built by the Great Beings as a Matoran repair facility, ruined by the failures of its overseer. with the Ko-MatoranKo-MatoranIce Matoran who were quiet scholars and star-watchers, built to survive the frozen peaks of Ko-Wahi. refugee KopekeKopekeKopeke was a Ko-Matoran ice carver of Ko-Koro who served in the Chronicler's Company at Kini-Nui and was later elected the third Chronicler of the Matoran Universe., a scene that placed the loss of the Koros within the longer pattern of devastation that followed TeridaxTeridaxTeridax orchestrated a thousand-year scheme that ended with him occupying the Great Spirit Robot itself before his death on Bara Magna.'s takeover. The ToaThe Toa: Heroes of the Matoran UniverseThe Toa were biomechanical guardians sworn to protect the Matoran, bound by a strict code and defined by sacrifice across every age of the universe. Nuva's role shifted in the post-BohrokBohrokHive-minded mechanical creatures designed to reshape worlds, the Bohrok represent a threat the Toa Mata never expected. period from village protectors to mobile defenders of the MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. people as a whole. By the time of KopakaKopakaKopaka was the Toa Nuva of Ice, deputy commander of the Toa Mata, and one of the six warriors crafted on Artakha to defend the Matoran Universe.'s return to the AgoriAgoriThe villager species of Bara Magna, organised by tribe and settlement, who governed their villages and arranged the Glatorian arena system. and MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. encampment with KarzahniKarzahniA region of the Matoran Universe built by the Great Beings as a Matoran repair facility, ruined by the failures of its overseer.'s body, the era of the Koros as static settlements had ended.