The Archives of Metru Nui

The Archives of Onu-MetruOnu-MetruThe deep archive-city that made mining and historical records preservation the beating heart of Metru Nui. were the central repository of MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. knowledge 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. specimens within Metru NuiMetru NuiThe city beneath Mata Nui functions as the Great Spirit's brain, housing the Matoran whose labor keeps the god alive.. Maintained by the ArchivistArchivistA Matoran keeper of records and relics, the Archivist held one of Metru Nui's deadliest jobs. Corps under the authority of the Chief ArchivistArchivistA Matoran keeper of records and relics, the Archivist held one of Metru Nui's deadliest jobs. and the oversight of TuragaTuragaFormer Toa who fulfilled their destiny and transformed into leaders. Turaga wield Noble Kanohi masks and weakened elemental powers, guiding their communities. DumeDumeDume is a Turaga of Fire and the former ruler of Metru Nui, distinguished by his red and black coloring and the Noble Kanohi Kiril, the Mask of Regeneration. As a member of the Turaga of Metru Nui, he wields a Staff of Office and commands a weakened mastery of Fire. He later resides on the reformed Spherus Magna., the facility extended through multiple subterranean levels beneath the Onu-MetruOnu-MetruThe deep archive-city that made mining and historical records preservation the beating heart of Metru Nui. district. It combined the functions of a library, a containment vault, and a research site.

Foundation in Onu-Metru#

The Archives extended deep beneath Onu-MetruOnu-MetruThe deep archive-city that made mining and historical records preservation the beating heart of Metru Nui. and functioned as the Matoran UniverseMatoran UniverseA civilization of biomechanical beings living inside a colossal robot, destroyed when Teridax seized control.'s central body of preserved knowledge. The Onu-MatoranOnu-MatoranEarth-wielding Matoran of the deep who adapted to darkness and built the Matoran Universe's defensive cavalry., well-adapted to low light, staffed the facility and worked among catalogued 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. specimens, ancient artifacts, and stored Kanoka disk data. The subterranean placement reflected both the working preferences of the Onu-MatoranOnu-MatoranEarth-wielding Matoran of the deep who adapted to darkness and built the Matoran Universe's defensive cavalry. and the practical need to keep volatile holdings away from the city above.

Authority over the Archives ran through the Chief ArchivistArchivistA Matoran keeper of records and relics, the Archivist held one of Metru Nui's deadliest jobs., who held day-to-day control over access and classification, with final authority resting with TuragaTuragaFormer Toa who fulfilled their destiny and transformed into leaders. Turaga wield Noble Kanohi masks and weakened elemental powers, guiding their communities. DumeDumeDume is a Turaga of Fire and the former ruler of Metru Nui, distinguished by his red and black coloring and the Noble Kanohi Kiril, the Mask of Regeneration. As a member of the Turaga of Metru Nui, he wields a Staff of Office and commands a weakened mastery of Fire. He later resides on the reformed Spherus Magna.. Each entrance to the facility was secured by a rotating three-lever lock whose combination changed daily and was known only to the VahkiVahkiMetru Nui's mechanical law enforcement squads, designed to maintain rigid order but ultimately undermined by chaos beyond their programming. and guards on duty. The arrangement allowed access to be controlled without requiring a shared key system.

The internal layout combined maintenance tunnels, specimen wings, and data chambers, with lower levels that were poorly mapped and rarely visited. The Onu-MatoranOnu-MatoranEarth-wielding Matoran of the deep who adapted to darkness and built the Matoran Universe's defensive cavalry. NuparuNuparuAn Onu-Matoran engineer from Metru Nui who built the Boxor and rose to become a Toa of Earth despite no warrior destiny. discovered a sea leak in these lower tunnels during the events surrounding the missing Great Disk of Onu-MetruOnu-MetruThe deep archive-city that made mining and historical records preservation the beating heart of Metru Nui., demonstrating the scale of the facility and the limits of its monitoring. The Archives operated on the principle stated by the ArchivistArchivistA Matoran keeper of records and relics, the Archivist held one of Metru Nui's deadliest jobs. Corps and recorded in Trial by FireThe Quest for the Great Disks and the Burning of the King RootThe Toa Metru's hunt for the six Great Kanoka Disks across the districts of Metru Nui and their assault on the Morbuzakh's central core in the Great Furnace of Ta-Metru.: if a MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. had to ask what was behind a door, they were not meant to open it.

Structure and Contents#

Stasis tubes formed the core containment system within the Archives. Each tube held a single 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. specimen, with the more dangerous occupants confined to the lower levels. The facility's holdings included BohrokBohrokHive-minded mechanical creatures designed to reshape worlds, the Bohrok represent a threat the Toa Mata never expected. specimens, the Onu-MetruOnu-MetruThe deep archive-city that made mining and historical records preservation the beating heart of Metru Nui. Great Disk, and a wide range of 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. used both for study and as living records of the Matoran UniverseMatoran UniverseA civilization of biomechanical beings living inside a colossal robot, destroyed when Teridax seized control.'s biological diversity.

Kanoka disks held a central role in the Archives' storage system. The disks were not passive data carriers but active artifacts with effects ranging from teleportation to shielding, and their archival use required careful classification. The Onu-MetruOnu-MetruThe deep archive-city that made mining and historical records preservation the beating heart of Metru Nui. Great Disk, vital to the Coliseum games, was among the most significant pieces held within the facility.

Security relied on the combination of restricted access, rotating locks, and VahkiVahkiMetru Nui's mechanical law enforcement squads, designed to maintain rigid order but ultimately undermined by chaos beyond their programming. patrols. The system was effective under normal conditions but depended on the structural integrity of the surrounding facility. When the Great Cataclysm breached the dome above Metru NuiMetru NuiThe city beneath Mata Nui functions as the Great Spirit's brain, housing the Matoran whose labor keeps the god alive., the security framework collapsed alongside the architecture it had been designed to protect.

The Great Cataclysm and Its Aftermath#

The Great CataclysmThe Great CataclysmThe day Makuta Teridax put the Great Spirit to sleep, the Great Spirit Robot fell from the sky, Metru Nui flooded, and Voya Nui tore loose from the Southern Continent. caused widespread damage throughout the Archives. Stasis tubes shattered across multiple levels, releasing RahkshiRahkshiArmor suits powered by parasitic Kraata, Rahkshi were Teridax's most effective soldiers and among Bionicle's most visually iconic early enemies., MuakaMuakaTiger-like predators of Ko-Wahi with claws, teeth, and a taste for anything that moves., and other contained 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. into the corridors. The RahkshiRahkshiArmor suits powered by parasitic Kraata, Rahkshi were Teridax's most effective soldiers and among Bionicle's most visually iconic early enemies. operated with their established efficiency, while loose MuakaMuakaTiger-like predators of Ko-Wahi with claws, teeth, and a taste for anything that moves. and other predators ranged through the lower levels. Surviving traces of these creatures persisted in the deeper tunnels long afterward, including evidence detected during KapuraKapuraKapura was a red Matoran of Fire who served as a member of the Ta-Koro Guard and formerly as part of the Chronicler's Company. A native of Metru Nui, he later worked as a Vat Controller there, wearing a powerless Ruru on Mata Nui and a powerless Pakari on Metru Nui, and ultimately settled on Bota Magna on Spherus Magna.'s later sweeps through the area.

Among the creatures that may have been disturbed by the breach was the Archives Beast, an unidentified 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. confined in a sealed chamber in the lower levels. The Beast had previously been encountered by 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. and 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 remained in its cell at the time of the disaster. Whether it escaped during the collapse is not recorded in any surviving inventory.

Many MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. were lost during the initial collapse and the follow-up sweeps. KapuraKapuraKapura was a red Matoran of Fire who served as a member of the Ta-Koro Guard and formerly as part of the Chronicler's Company. A native of Metru Nui, he later worked as a Vat Controller there, wearing a powerless Ruru on Mata Nui and a powerless Pakari on Metru Nui, and ultimately settled on Bota Magna on Spherus Magna. became separated from his companions on more than one occasion while exploring the lower levels, including during events documented in the 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. era. The VahkiVahkiMetru Nui's mechanical law enforcement squads, designed to maintain rigid order but ultimately undermined by chaos beyond their programming. patrols had ceased after the Cataclysm, and the Rahaga later recaptured only what they could locate. Significant sections of the Archives remained unsearched, and rumours persisted of dormant BohrokBohrokHive-minded mechanical creatures designed to reshape worlds, the Bohrok represent a threat the Toa Mata never expected. nests beneath the foundations.

The Staff of ArtakhaArtakhaArtakha was the master craftsman of the Matoran Universe, ruler of a hidden island, and the forger of the Toa Mata, the Avohkii, and the Kraahkan. was eventually used to restore the Archives' structure. The artifact rebuilt the damaged walls and returned the surviving specimens to their stasis tubes, allowing the Toa Hagah and RahagaToa Hagah and RahagaThe Toa Hagah were appointed to guard Makuta Teridax, mutated into hybrid warriors, and mysteriously restored. to resume containment operations.

Refuge of the Rahaga#

The Rahaga arrived in Metru NuiMetru NuiThe city beneath Mata Nui functions as the Great Spirit's brain, housing the Matoran whose labor keeps the god alive. carrying the AvohkiiAvohkiiThe Avohkii is the Mask of Light, a golden mask that granted its wearer the power of Light and the ability to spread understanding. It was worn by Toa Takanuva., the Great Mask of Light, after escaping the VisorakVisorak (Rahi)Spider-like Rahi employed by the Brotherhood of Makuta whose name meant 'Stealers of Life' and whose swarms threatened the Matoran Universe.. The damaged Archives provided shelter while they regrouped. The maze of broken tubes, dormant stasis fields, and disconnected sectors offered cover, and the group used the facility as a working base while studying the AvohkiiAvohkiiThe Avohkii is the Mask of Light, a golden mask that granted its wearer the power of Light and the ability to spread understanding. It was worn by Toa Takanuva. and planning the city's defence.

TakanuvaTakanuvaHidden among the Ta-Matoran as Takua, the disguised Av-Matoran who became Takanuva was the sole Toa of Light produced in the Matoran Universe's full history. later joined the Rahaga in the Archives, where the Dweller in the DeepDweller in the DeepThe Dweller in the Deep was a colossal Rahi inhabiting the waters beneath Ga-Metru's Great Temple, encountered only once by Toa Metru Nokama. had taken up residence in the lower pits. The creature targeted TakanuvaTakanuvaHidden among the Ta-Matoran as Takua, the disguised Av-Matoran who became Takanuva was the sole Toa of Light produced in the Matoran Universe's full history. on his arrival, sensing the Light he carried. The Rahaga were unable to prevent the attack, though all members of the party survived the encounter.

During this period, the Archives functioned as a base of operations for early resistance within the city. The Rahaga monitored movements across Onu-MetruOnu-MetruThe deep archive-city that made mining and historical records preservation the beating heart of Metru Nui., coordinated with KapuraKapuraKapura was a red Matoran of Fire who served as a member of the Ta-Koro Guard and formerly as part of the Chronicler's Company. A native of Metru Nui, he later worked as a Vat Controller there, wearing a powerless Ruru on Mata Nui and a powerless Pakari on Metru Nui, and ultimately settled on Bota Magna on Spherus Magna., and worked to recapture loose 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. where possible. The facility's role as a contained, defensible space made it valuable until the situation in Metru NuiMetru NuiThe city beneath Mata Nui functions as the Great Spirit's brain, housing the Matoran whose labor keeps the god alive. shifted again.

Use During the Reign of Shadows#

After TeridaxTeridaxTeridax orchestrated a thousand-year scheme that ended with him occupying the Great Spirit Robot itself before his death on Bara Magna. seized control of the Matoran UniverseMatoran UniverseA civilization of biomechanical beings living inside a colossal robot, destroyed when Teridax seized control., the Archives became a refuge for MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. and fugitives sheltering from the RahkshiRahkshiArmor suits powered by parasitic Kraata, Rahkshi were Teridax's most effective soldiers and among Bionicle's most visually iconic early enemies.. Broken stasis tubes, free-roaming 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., and forgotten passages offered concealment to those evading the new regime.

It was during this period that 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. located Toa TuyetTuyetA Toa of Water caught in the Order's machinations, Tuyet turned from peer-seeker to rebel-schemer. in the lower levels. TuyetTuyetA Toa of Water caught in the Order's machinations, Tuyet turned from peer-seeker to rebel-schemer., long believed lost, had been hiding within the Archives. HafuHafuHafu was a Po-Matoran Carver of Po-Koro, recognized as a Master Carver, who served in the Chronicler's Company and survived the Reign of Shadows. and KapuraKapuraKapura was a red Matoran of Fire who served as a member of the Ta-Koro Guard and formerly as part of the Chronicler's Company. A native of Metru Nui, he later worked as a Vat Controller there, wearing a powerless Ruru on Mata Nui and a powerless Pakari on Metru Nui, and ultimately settled on Bota Magna on Spherus Magna. joined 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. to assess her account. HafuHafuHafu was a Po-Matoran Carver of Po-Koro, recognized as a Master Carver, who served in the Chronicler's Company and survived the Reign of Shadows. questioned TuyetTuyetA Toa of Water caught in the Order's machinations, Tuyet turned from peer-seeker to rebel-schemer.'s claims, recalling only fragments of the history surrounding Toa 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., while KapuraKapuraKapura was a red Matoran of Fire who served as a member of the Ta-Koro Guard and formerly as part of the Chronicler's Company. A native of Metru Nui, he later worked as a Vat Controller there, wearing a powerless Ruru on Mata Nui and a powerless Pakari on Metru Nui, and ultimately settled on Bota Magna on Spherus Magna. confirmed that NidhikiNidhikiOnce a guardian of Metru Nui, Nidhiki traded his Toa honor for Dark Hunter gold and paid the price. had been consumed and 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. killed in defence of the MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body.. TuyetTuyetA Toa of Water caught in the Order's machinations, Tuyet turned from peer-seeker to rebel-schemer. produced a fist-sized crystal from her pouch, claiming it was a weapon capable of acting against the MakutaMakuta (Species)Shadowy Antidermis beings and the Brotherhood's elite, Makuta commanded darkness and shaped the Matoran Universe's fate..

During the same encounter, Tren KromTren KromThe first purely organic creation of the Great Beings, exiled to a stone island after surrendering the core of the Matoran Universe to Mata Nui. made his presence known. He had taken possession of 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.'s body and announced himself with the words, "You are at the end of your journey... the end of all journeys, Toa. And my name is Tren KromTren KromThe first purely organic creation of the Great Beings, exiled to a stone island after surrendering the core of the Matoran Universe to Mata Nui.." Tren KromTren KromTren Krom maintained the Matoran Universe before Mata Nui's activation and spent the following hundred millennia fused to a cave on a remote island. then departed the Archives in 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.'s form, marking one of the most significant escapes from the facility during the 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. era.

Restoration and Abandonment#

The Toa HagahToa HagahElite Toa teams appointed by the Brotherhood of Makuta to serve as personal guardians, later rebelling against their creators. were assigned to stabilise the Archives following the use of the Staff of ArtakhaArtakhaArtakha was the master craftsman of the Matoran Universe, ruler of a hidden island, and the forger of the Toa Mata, the Avohkii, and the Kraahkan.. They patrolled Onu-MetruOnu-MetruThe deep archive-city that made mining and historical records preservation the beating heart of Metru Nui. and oversaw the recovery effort, working alongside the surviving Archivists to log damage, seal breaches, and prevent further losses. The restoration was extensive but not complete, with several sections never fully resecured.

When the Matoran UniverseMatoran UniverseA civilization of biomechanical beings living inside a colossal robot, destroyed when Teridax seized control. collapsed and the surviving population reached Spherus MagnaSpherus MagnaA desert world of ancient conflict that became the merger point of the Matoran Universe and Bionicle's true endpoint., the Archives were decommissioned. The catalogued artifacts, records, and surviving 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. were relocated to a new repository constructed on the surface of the reunited planet. VezonVezonHe started as a weapon misfire and a throwaway joke, and the canon spent four years quietly turning him into its most useful expendable asset.'s accidental arrival on Spherus MagnaSpherus MagnaA desert world of ancient conflict that became the merger point of the Matoran Universe and Bionicle's true endpoint., as recorded in the 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. account, marked one of the earliest contacts between the two settings. The new Archives replaced the Metru NuiMetru NuiThe city beneath Mata Nui functions as the Great Spirit's brain, housing the Matoran whose labor keeps the god alive. facility entirely, and the original site was left empty.

Unresolved Records#

Several entries in the Archives remain incomplete. The Two-Headed TarakavaTarakavaHuge lizard-like Rahi with powerful forelegs, hunted in pairs across Mata Nui and Metru Nui., which 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. nearly freed during 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 search for the Great Disks, does not appear in any later inventory. Whether the creature escaped during the Great Cataclysm or was recovered during the Toa HagahToa HagahElite Toa teams appointed by the Brotherhood of Makuta to serve as personal guardians, later rebelling against their creators.'s restoration is not recorded. The Archives BeastThe Archives BeastAn unidentified shapeshifting Rahi confined in the lower levels of the Great Archives, capable of mimicking empty rooms and driven off only by extreme cold. likewise vanishes from the record after 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 encounter with it.

The presence of Tren KromTren KromThe first purely organic creation of the Great Beings, exiled to a stone island after surrendering the core of the Matoran Universe to Mata Nui. within 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.'s body during the 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. encounter raises questions that other records do not resolve. Other accounts treat Tren KromTren KromTren Krom maintained the Matoran Universe before Mata Nui's activation and spent the following hundred millennia fused to a cave on a remote island. as confined to his island and physically untransportable, including BrutakaBrutakaBrutaka guarded the Kanohi Ignika on Voya Nui, betrayed the Order during the Piraka incursion, served time in the Pit, and later led the Federation of Fear strike team.'s direct observation of him in Federation of FearFederation of FearAn Order of Mata Nui strike team of imprisoned villains, led by Brutaka, rescued Makuta Miserix from the volcanic prison of Artidax to install him as the figurehead of the coming war against the Brotherhood., which described him as a writhing mass of tentacles. How Tren KromTren KromTren Krom maintained the Matoran Universe before Mata Nui's activation and spent the following hundred millennia fused to a cave on a remote island. projected himself or transferred consciousness across that distance is not addressed in the surviving record.

Legacy of the Facility#

The Archives served as both repository and warning. Catalogued among the broader holdings were items and creatures that the ArchivistArchivistA Matoran keeper of records and relics, the Archivist held one of Metru Nui's deadliest jobs. Corps preferred to contain rather than understand. The lower levels remained the most opaque section of the facility throughout its operational history, and MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. who entered them did not always return.

Comparable sites elsewhere in the Matoran UniverseMatoran UniverseA civilization of biomechanical beings living inside a colossal robot, destroyed when Teridax seized control. drew on the same containment philosophy. KarzahniKarzahniA region of the Matoran Universe built by the Great Beings as a Matoran repair facility, ruined by the failures of its overseer.'s realm, the holdings of the Dark Hunters, and the eventual fragmentation of Tren KromTren KromThe first purely organic creation of the Great Beings, exiled to a stone island after surrendering the core of the Matoran Universe to Mata Nui. all reflected the principle that certain entities were too dangerous to destroy and too valuable to release. The Archives of Onu-MetruOnu-MetruThe deep archive-city that made mining and historical records preservation the beating heart of Metru Nui. stood as the original and most extensive application of that principle within the Matoran UniverseMatoran UniverseA civilization of biomechanical beings living inside a colossal robot, destroyed when Teridax seized control..