Zyglak
Zyglak are a species of dark red, dark blue, and white creatures who are amphibious and wield spears and knives in combat. Formerly confined to the Pit, the Zyglak now inhabit Spherus Magna.

The Zyglak are a reptilian race sometimes called "the Great Beings' mistakes." Notoriously violent and destructive, they hated the Great Spirit 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. and anything associated with him. The savage outcasts were known for being virtually invulnerable to the elemental powers of ToaToa (2001)Biomechanical heroes bonded to elemental powers and masks. Not born, but chosen and transformed.. They are amphibious, capable of swimming and surviving underwater, and fight with spears and knives. The Zyglak could construct their own boats, building rough vessels slapped together from remnants and wreckage and barely seaworthy, which they crewed in raiding bands.
A tribe of Zyglak set up residence in the Cord beneath Mahri Nui when its tunnel walls began to crack and water flooded the small space. There the Toa InikaToa Inika: six Matoran struck by lightningSix Matoran of Metru Nui chased the Toa Nuva to Voya Nui and were struck by lightning from the red star. That strike made them the Toa Inika. battled them while searching for the Mask of Life, eventually deciding to take their chances in the open ocean rather than remain. When an energy wave from the Ignika changed the Toa Inika into the Toa MahriToa Mahri: The Toa Who Saved the UniverseThe Toa Mahri were the water breathing form of the sixth Toa team, transformed by the Mask of Life on the way down to the drowned city of Mahri Nui. They fought the Barraki for the mask and recovered it at the cost of one of their own., Zyglak were among the creatures present at the scene.
The Zyglak became the new residents of the PitThe PitThe Order of Mata Nui's maximum-security underwater prison where the Barraki warlords were held until catastrophe broke their chains. after it was sealed shut. When the prison was reopened, Kalmah and Takadox of the BarrakiThe BarrakiSix warlords who built an empire spanning most of the Matoran Universe, fell to a Brotherhood strike, and spent millennia imprisoned in the Pit. fled from Zyglak who had been hiding inside; Takadox tricked Nocturn into believing the Zyglak had insulted him, and Nocturn attacked the creatures. The Zyglak came hunting for the three re-imprisoned Barraki. They also surrounded the captured Vezon, who found them immune to his wit and charm before he was abruptly snatched away. A Zyglak was later among the beings rendered down by the Skakdi in the energized protodermis ritual that produced a new lifeform.
Gallery

Images via BIONICLE Wiki (Biosector01)
Sources
- WikiZyglak, Bionicle Fandom wiki cross-reference
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Followed from this entry
Toa Mahri: The Toa Who Saved the Universe
The Toa Mahri were the water breathing form of the sixth Toa team, transformed by the Mask of Life on the way down to the drowned city of Mahri Nui. They fought the Barraki for the mask and recovered it at the cost of one of their own.

Toa Inika: six Matoran struck by lightning
Six Matoran of Metru Nui chased the Toa Nuva to Voya Nui and were struck by lightning from the red star. That strike made them the Toa Inika.

The Barraki
Six warlords who built an empire spanning most of the Matoran Universe, fell to a Brotherhood strike, and spent millennia imprisoned in the Pit.

Mata Nui
Built 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 Pit
The Order of Mata Nui's maximum-security underwater prison where the Barraki warlords were held until catastrophe broke their chains.
Toa (2001)
Biomechanical heroes bonded to elemental powers and masks. Not born, but chosen and transformed.
Mentioned in30 entries
Brutaka
Brutaka guarded the Kanohi Ignika on Voya Nui, betrayed the Order during the Piraka incursion, was mutated in the Pit, and later led the Order's strike team to free Miserix.
Chamber of Life
The Chamber of Life was the vault beneath the Lake of Lava of Mount Valmai on Voya Nui where the Kanohi Ignika, the Mask of Life, lay hidden.
Kalmah
A red-and-black Barraki warlord of the League of Six Kingdoms, imprisoned in the Pit and mutated into permanent aquatic form.
Kanohi Mask of Possibilities
A Great Kanohi that altered probability for its wearer, borne by the Toa of Lightning Nikila on the doomed first mission of the Toa Cordak.
Krana
The small organic creatures that controlled the Bohrok, made in eight types plus a mutated variant, without which no Bohrok could serve the swarm.
Krekka's Species
Krekka's species, informally called bruisers, were a heavily built lower class of Stelt's hierarchy employed as guards, servants and labourers.
Mutagen
Pit Mutagen was a power-source energy that leaked into the waters of The Pit during the Great Cataclysm and mutated almost every being exposed to it.
Nocturn
Nocturn was an amphibious prisoner of the Pit who served as Ehlek's lieutenant and briefly held the Mask of Life before its recovery.
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.
Reign of Shadows
The 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.
Sahmad and the Hunt for Annona: The Iron Tribe Slaver's Last Pursuit
The last survivor of the Iron Tribe tracked the dream-eater Annona across Bara Magna and onto Aqua Magna, ending the entity that had ended his people.
Sapient Species of the Matoran Universe and Spherus Magna
The sapient species ranged from Matoran and Toa to Vortixx, Skakdi, Zyglak, and the tribes of Spherus Magna, each defined by distinct biology and role.
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