Onu-Matoran
Earth-wielding Matoran of the deep who adapted to darkness and built the Matoran Universe's defensive cavalry.

Onu-MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. were the true MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. of Earth, and they spent most of their existence in darkness. Their eyes evolved to handle low light without strain, which meant bright sunlight on the surface would temporarily blind them. This vulnerability was more than flavor text: 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. used it tactically during the RahkshiRahkshiArmor suits powered by parasitic Kraata, Rahkshi were Teridax's most effective soldiers and among Bionicle's most visually iconic early enemies. assault on the Archives, as his knowledge of how Onu-MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. adapt to light gave him a tactical edge in the fight. Beyond that adaptation, they were known for exceptional strength and durability, and their core virtues were Duty and Destiny, expressed through the principle of Prosperity.
The Archives and Underground Life#
In Metru NuiMetru NuiThe city beneath Mata Nui functions as the Great Spirit's brain, housing the Matoran whose labor keeps the god alive., Onu-MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. filled most roles in the city's deep infrastructure. They typically started out as miners, extracting protodermis and other materials from the networks beneath the city, then advanced into positions within the Archives. Characters like NuparuNuparuAn Onu-Matoran engineer from Metru Nui who built the Boxor and rose to become a Toa of Earth despite no warrior destiny. and TaipuTaipuTaipu is a black and tan Onu-Matoran of the element of Earth who resides on Spherus Magna. A miner by trade, he wields a pickaxe and wears the Kanohi Pakari. perfectly exemplify this career trajectory. TaipuTaipuTaipu is a black and tan Onu-Matoran of the element of Earth who resides on Spherus Magna. A miner by trade, he wields a pickaxe and wears the Kanohi Pakari. spent his life in the Metru NuiMetru NuiThe city beneath Mata Nui functions as the Great Spirit's brain, housing the Matoran whose labor keeps the god alive. Archives or deep in mines, working comfortably in absolute darkness that other MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. found forbidding. The ArchivistArchivistA Matoran keeper of records and relics, the Archivist held one of Metru Nui's deadliest jobs. himself, also Onu-MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body., oversaw cataloging of deceased 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. in BIONICLEBIONICLE: Matoran AdventuresA 2002 GBA platformer where you play as one of six Matoran fighting Bohrok across Mata Nui's islands. Legends 10: Swamp of SecretsSwamp of SecretsThe Swamp of Secrets was the mutagen-saturated wetland that filled the floor of Karda Nui after the Great Cataclysm, serving as a Brotherhood stronghold until the Energy Storms.. Their comfort underground made them invaluable for work that would exhaust other MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body.. The darkness wasn't a prison for them. It was home.
Mata NuiMata NuiBuilt by the Great Beings to restore Spherus Magna, Mata Nui sustained an entire civilisation inside his body, was deposed by Teridax, and reclaimed his purpose as a mortal on Bara Magna.: The Ussalry Era#
When the MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. reached Mata NuiMata NuiBuilt by the Great Beings to restore Spherus Magna, Mata Nui sustained an entire civilisation inside his body, was deposed by Teridax, and reclaimed his purpose as a mortal on Bara Magna., Onu-MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. shifted into new roles, balancing two occupations. They operated the protodermis and lightstone mines that sustained the island's infrastructure, but they also formed the UssalryUssalryOnu-Koro's branch of the Mata Nui Military, made up of Onu-Matoran riders mounted on tamed Ussal crabs and led by High Commander Onepu., a mounted cavalry that rode massive UssalUssalSix-legged crustacean Rahi domesticated across Metru Nui and Mata Nui for cargo, mining, and sport. Backbone of Matoran labor. crabs across the cavern terrain of Onu-WahiOnu-WahiThe underground kingdom of Mata Nui, home to the Onu-Matoran and Toa Onua.. This defense force was unique to them, built on the land's topology and their deep bond with the Ussals. The UssalryUssalryOnu-Koro's branch of the Mata Nui Military, made up of Onu-Matoran riders mounted on tamed Ussal crabs and led by High Commander Onepu. became Onu-WahiOnu-WahiThe underground kingdom of Mata Nui, home to the Onu-Matoran and Toa Onua.'s military identity.
The Exodus#
After the Battle of Bara MagnaBara MagnaA desert world of tribal warfare and scarce resources, one of three landmasses that formed Spherus Magna. and the structural collapse of the Great Spirit Robot, all Onu-MatoranMatoranThe most abundant species in the Matoran Universe, chosen by Mata Nui to inhabit and maintain his cosmic body. evacuated the Matoran UniverseMatoran UniverseA civilization of biomechanical beings living inside a colossal robot, destroyed when Teridax seized control. for Spherus MagnaSpherus MagnaA desert world of ancient conflict that became the merger point of the Matoran Universe and Bionicle's true endpoint.. Their long centuries of underground existence had finally ended. They brought their tradition of strength and duty into a new world, adapting to surface dwelling where darkness was no longer their native state but an aberration.
Compiled from primary sources by Lore Fortress editorial. Reviewed by Joe Garratt, Editor-in-Chief.
Sources
- SerialReign of Shadows — Greg Farshtey serial
- BookBIONICLE Adventures 3: The Darkness Below — Scholastic BIONICLE Adventures
- WikiOnu-Matoran — Biosector01
- BookBIONICLE Adventures 1: Mystery of Metru Nui — Scholastic BIONICLE Adventures
- BookBIONICLE Legends 10: Swamp of Secrets — BIONICLE Legends series
Spotted a factual error or a primary source we missed? Email a correction. Every flagged claim gets reviewed.
Related entries
Taipu
Taipu is a black and tan Onu-Matoran of the element of Earth who resides on Spherus Magna. A miner by trade, he wields a pickaxe and wears the Kanohi Pakari.
Ussalry
Onu-Koro's branch of the Mata Nui Military, made up of Onu-Matoran riders mounted on tamed Ussal crabs and led by High Commander Onepu.
Rahi
The Rahi were the biomechanical wildlife of the Matoran Universe, built largely by the Brotherhood of Makuta, ranging from background fauna to engineered war beasts.
Swamp of Secrets
The Swamp of Secrets was the mutagen-saturated wetland that filled the floor of Karda Nui after the Great Cataclysm, serving as a Brotherhood stronghold until the Energy Storms.
Ussal
Six-legged crustacean Rahi domesticated across Metru Nui and Mata Nui for cargo, mining, and sport. Backbone of Matoran labor.
Onua
Onua 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.
Mentioned in128 entries
Archives Mole
Small, harmless burrowing Rahi engineered by the Makuta, originally native to Po-Metru and forced into the shadowy recesses of the Onu-Metru Archives, where their cooperative behaviour built living ladders and bridges through the lower levels.
Azibo
Azibo was an Onu-Matoran prospector of Onu-Koro whose discovery of the Great Sundial at the bottom of Mine Shaft B opened a concealed passage into Mangaia.
Bio
The smallest of the three Matoran measurement units, equal to the height of a standard Matoran and roughly 1.37 metres, from which every larger Matoran-Universe distance is built.
Black Spike Mountains
The mountain range north of the Bara Magna desert that served as the Skrall homeland after the Shattering, became Baterra hunting ground, and was destroyed when the Mata Nui robot fell upon it.
Bordakh
The Vahki model assigned to Ga-Metru, the Bordakh patrolled the canals and schools of the academic district and carried Staffs of Loyalty that turned any Matoran they struck into a willing informant against their own friends.
Boxor
Built by Nuparu from a salvaged Gahlok shell, the Boxor was the first Matoran-engineered combat machine and a key resistance asset against the Bohrok swarms.
Cavern of Light
The Cavern of Light was the principal Lightstone source on Mata Nui, sealed behind a single Onu-Matoran key and central to the island's illumination infrastructure.
Charms
Small carved stones inscribed with the Three Virtues, the six Principles, and the six Kohlii Skills, used as keys to the six Wahi temples on the island of Mata Nui.
Chief Archivist
The unnamed Onu-Matoran who oversaw the Archives of Metru Nui as head of the Archivist Corps and reported directly to Turaga Dume.
City of the Lost
The first appearance of Mahri Nui in the Quest for the Mask of Life, the airweed harvest that kept the underwater city alive, Defilak's submarine expedition into the Black Water, and the arrival of the Barraki on the doorstep of the Matoran settlement.
Defilak's Submarine
Defilak's Submarine was an underwater craft built by the Mahri Nui inventor Defilak in the shape of a Takea Shark, the only purpose-built Matoran vehicle to descend into the Black Water during the Mask of Life campaign, and the vessel destroyed by Pridak's Takea school on its first operational voyage.
Dosne
Dosne was an Onu-Matoran of Onu-Metru who became the Mining Captain of Onu-Koro on Mata Nui, evacuated the village during the Rahkshi attack, and later returned to Metru Nui before evacuating to Spherus Magna.
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