Gelu
Gelu is a Glatorian of the Ice Tribe, native to Bota Magna, who formerly served as a secondary Glatorian for the city of Iconox. White and dark blue in color, he wields an Ice Slicer and a Thornax Launcher and resides on the reformed Spherus Magna.

Gelu was a GlatorianGlatorianTribal warriors of Spherus Magna who settled disputes through arena combat, until the Skrall conquest enslaved most of them. of the Ice TribeIce TribeOne of Bara Magna's six major tribes, the Ice Tribe produced legendary Glatorian like Strakk and survived the Shattering intact. who served as the secondary Glatorian of the village of IconoxIconoxIconox is a village of the Ice Tribe, situated in the White Quartz Mountains.. He carried an Ice SlicerIce SlicerGelu's no-frills melee blade on Bara Magna, taken when Vorox captured him. and a Thornax LauncherThornax LauncherThe Thornax Launcher was a scrap-built projectile weapon produced by Agori engineers, firing Thornax fruit and standard across Glatorian and Skrall ranks. into combat.
In one arena match, Gelu fought the Fire Tribe Glatorian AckarAckarVeteran Glatorian of the Fire Tribe and prime fighter for Vulcanus, Ackar served from the Core War through the defence of Spherus Magna. and lost. The defeat obligated Iconox to send a shipment of the valuable metal exsidian to the village of VulcanusVulcanusThe Fire Tribe's settlement on Bara Magna, caught between resources and threats. as payment, a job for which the Glatorian StrakkStrakkA profit-driven Glatorian mercenary from the Ice Tribe who fought in Bara Magna's arenas before joining Mata Nui's cause. was contracted to guard the carriage.
While running an escort mission across the Dunes of Treason, Gelu guided a small caravan and was attacked by a group of SkrallSkrallA black-armored warrior species from Spherus Magna that dominated northern Bara Magna under Tuma's rule.. He fired his Thornax Launcher to keep them at bay, and when an extremely bright object falling from the sky to the east distracted the Skrall, Gelu and the caravan escaped into the Wastelands.
Gelu later fought the Bone HunterBone HunterDesert nomads of Bara Magna who raided for survival until their alliance with the Skrall nearly conquered the continent. Fero and recovered a detailed map of Vulcanus. He brought it to the Agori RaanuRaanuRaanu is an Agori of the Fire Tribe, distinguished by his dark red and yellow-orange coloration, who served as the leader of Vulcanus and the Fire Tribe on Spherus Magna. He wielded a Flame Blade and Fire Shield as his tools of office. Following the reformation of the planet, Raanu continued to reside on the restored Spherus Magna., and the two concluded that the Bone Hunters were planning a raid on the village. Gelu and Ackar then traveled to the exiled Glatorian MalumMalumFire Tribe Glatorian banished from Vulcanus for trying to kill Strakk in the arena, who took over a Vorox pack in the wastelands of Bara Magna. to ask for his aid; Malum at first refused, but agreed to send his Vorox against a Bone Hunter camp once Ackar revealed that Bone Hunters were behind the threat.
After the reformation of Spherus MagnaSpherus MagnaA desert world of ancient conflict that became the merger point of the Matoran Universe and Bionicle's true endpoint., Gelu acted as a guide for the Toa OrdeOrdeOrde is a blue and gold Toa of Psionics of the Matoran species who resides on Spherus Magna. He wields a mace and formerly served as a member of Orde's Toa Team. and ChiaraChiaraChiara is a blue and white Toa and former Vo-Matoran who wields the element of Lightning and possesses the power of Stealth. She carries a spear and wears the Great Volitak, replacing the Powerless Volitak she wore as a Matoran, and serves as a Protector of Matoran on Bota Magna, Spherus Magna. on a journey across difficult terrain, a role the ToaToa (2001)Biomechanical heroes bonded to elemental powers and masks. Not born, but chosen and transformed. 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. had arranged. Gelu clashed with Orde over the Toa's use of his elemental power, and the two were interrupted only when Chiara hurled a bolt of electricity between them. The group then continued on to complete their mission.
Gallery

Images via BIONICLE Wiki (Biosector01)
Sources
- WikiGelu, Bionicle Fandom wiki cross-reference
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Followed from this entry

Strakk
A profit-driven Glatorian mercenary from the Ice Tribe who fought in Bara Magna's arenas before joining Mata Nui's cause.

Iconox
Iconox is a village of the Ice Tribe, situated in the White Quartz Mountains.

Raanu
Raanu is an Agori of the Fire Tribe, distinguished by his dark red and yellow-orange coloration, who served as the leader of Vulcanus and the Fire Tribe on Spherus Magna. He wielded a Flame Blade and Fire Shield as his tools of office. Following the reformation of the planet, Raanu continued to reside on the restored Spherus Magna.

Malum
Fire Tribe Glatorian banished from Vulcanus for trying to kill Strakk in the arena, who took over a Vorox pack in the wastelands of Bara Magna.

Thornax Launcher
The Thornax Launcher was a scrap-built projectile weapon produced by Agori engineers, firing Thornax fruit and standard across Glatorian and Skrall ranks.
Chiara
Chiara is a blue and white Toa and former Vo-Matoran who wields the element of Lightning and possesses the power of Stealth. She carries a spear and wears the Great Volitak, replacing the Powerless Volitak she wore as a Matoran, and serves as a Protector of Matoran on Bota Magna, Spherus Magna.
Mentioned in22 entries
Ackar
Veteran Glatorian of the Fire Tribe and prime fighter for Vulcanus, Ackar served from the Core War through the defence of Spherus Magna.
Angonce
The Great Being who named Mata Nui, stayed out of the Baterra project, was said to have lingered on Bara Magna to watch the Agori, and raced too late to stop Marendar when the Toa reached Spherus Magna.
Atero
The free city at the heart of Bara Magna, home to the Arena Magna and the Great Tournament, destroyed by Tuma and the Skrall during the opening match.
Bone Hunters: the Agori who left the rock tribe and became desert raiders
Bone hunters are a nomadic tribe of Bara Magna raiders descended from rock tribe Agori. Left out of the social system after the Shattering, they took what they needed by theft and by force.
Certavus
Certavus was a famed Glatorian of the Ice Tribe, a Great Tournament champion and the author of the Book of Certavus, a collection of his fighting secrets.
Exsidian
Exsidian was the tough, golden metal mined by the Ice Tribe near Iconox, prized for resisting sand and rust, and the cargo that drove the events of The Crossing.
Fero
A veteran Bone Hunter who rode the rock steed Skirmix, led a raid on Vulcanus, and fled the Battle of Roxtus before the Skrall lost.
How Bionicle Ended: the Generation 1 Story's Final Chapter Explained
How the original BIONICLE story finished in 2010. Mata Nui fought Teridax for the last time above Bara Magna, Spherus Magna was made whole again, and a run of online serials carried on until the story stopped in 2011.
Jungle Tribe
The Jungle Tribe of Tesara originated in Bota Magna, weathered the Shattering, and sent Gresh and Vastus into the Bara Magna arena system.
Kabrua
Kabrua led an organised Vorox society on Bota Magna, kept the speech and intelligence his desert kin had lost, and hunted a Toa expedition for sport.
The Battle of Bara Magna
Teridax brought the Great Spirit Robot to Bara Magna, and Mata Nui rose to meet him in the ancient Prototype Robot, in the battle that ended the Matoran Universe and reformed Spherus Magna.
The Crossing
The Bara Magna serial in which Strakk, Gresh, Kirbold, and Tarduk carried an exsidian shipment from Iconox to Vulcanus along the dangerous northern route and uncovered the first Skrall and Vorox confrontations of the empire era.
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