The discovery of the Matoran's former home, the great city of Metru Nui, starts this Prequel arc which focuses on the Turaga's past as the Toa Metru, tasked with saving the denizens of the city of from the coming disaster when Makuta initiates his Evil Plan.
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- All Webbed Up: Prior to the Toa Metru's transformation into Toa Hordika.
- Badass Bookworm: Nokama (teacher), Whenua (historian), and Nuju (scholar) are self-evident, although even the other three's jobs call for a level of academic knowledge (Matau is a test pilot, while Vakama and Onewa are artisans).
- Beast Man: The Toa Hordika due to the titular Hordika Venom making them half-rahi.
- Contrasting Sequel Protagonist: Towards the Toa Mata/Nuva
- The Toa Mata/Nuva were born as Toa and were trained by the Order of Mata Nui, while the Toa Metru were regular Matoran citizens with mundane lives who became Toa.
- The Toa Nuva transformation made the Toa Mata stronger than before, looks majestic and is permanent (except for Tahu), while the Toa Hordika made the Toa Metru weaker, look rather horrifying and was temporary.
- Caped Mecha: In the movies, the Turaga are depicted with robes.
- Dual Wielding: All of them in both of their Toa forms, except for Vakama Metru, who holds a single disk launcher.
- Hero with Bad Publicity: Thanks to Makuta-disguised-as-Dume making them look like chumps, the Matoran of Metru Nui turn against them.
- How Do I Shot Web?: Learning how to use their mask powers, since even mask-maker Vakama was unaware of what powers the masks posessed.
- Let's Split Up, Gang!:
- To find the Great Disks, the Toa Metru split into three teams of two: Vakama and Onewa, Matau and Nokama, and Nuju and Whenua.
- After retrieving the Great Disks and being rejeced by the false Turaga Dume, they're split up again: Nuju, Whenua, and Onewa are captured while Vakama, Nokama, and Matau are forced to go on the run.
- The Mentor: All of them to their respective Toa Mata/Nuva.
- Miniature Senior Citizens: Upon becoming Turaga, they become a lot shorter than their Toa or Matoran forms. However since all Matoran also shrank when they were in the spheres, they ended up just slightly taller than the rest of them (except Whenua, who was the shortest among them).
- Mr. Exposition: As Turaga. Eventually deconstructed as the Toa Nuva start wondering why they have a handy legend to pull out whenever a new enemy emerges.
- Out of Job, Into the Plot: The plot kicks off when they are all interrupted in their various professions by Toa Lhikan, who hands them Toa stones and tells them the city is counting on them.
- Staff of Authority: Each of the Turaga gets one when they gave up their Toa Powers. The staffs are transformed versions of their original Toa Tools.
- Superpowered Evil Side: The Hordika mutations, though Vakama took it farther than the others.
- Took a Level in Badass: Unlike the Toa Mata/Nuva, who were born Toa and trained by the Order of Mata Nui, and the Toa Inika/Mahri, who were all Matoran who survived for 1000 years on the island of Mata Nui against wild Rahi, the Bohrok swarms, and the Rahkshi while also relying on the wisdom of past generation of Toa; the Toa Metru were all originally simple Matoran workers who lived pretty mundane lives. Then they got their powers, and through a series of events they were shaped into a group of heroes who went so far as to stand against this universe's equivalent of Satan and landed him one of his biggest setbacks ever in his plan to dominate the Matoran universe.
- Transformation Trauma: The Hordika mutations took a considerable toll on the Toa, though some took it worse than others and Vakama took it hardest of all.
- The Unchosen One: They eventually learn that Makuta implanted their names into Lhikan's mind to keep him from creating the "true" Toa Metru, which causes no small amount of angst for them since the reason they failed to save the Matoran the first time could easily be chalked up to them simply not being destined for it. Thankfully, Vakama learns it was actually part of a Batman Gambit by Mata Nui.
Vakama started life as a simple mask maker before becoming a Toa. He struggled with insecurity and self-doubt in his role, and had strange visions of the future well. Eventually, he overcame his issues, and used the wisdom of his past to become a kind and encouraging Turaga.
- Abnormal Ammo: Vakama has a launcher for the Kanoka Disks that are common in Metru Nui.
- Broken Ace: He rises from humble beginnings as a simple mask-maker, leads the Toa Metru against some of the greatest threats the city of Metru Nui ever faced, creates a Kanohi on par with one made by the Great Beings, defeats the Visorak horde, outwits and outplays both the Shadowed One and Makuta Teridax, and lives to tell about. He's also a Failure Knight who had to watch his home be reduced to ruin, his Matoran friends imprisoned and lose their memories, unable to save his mentor and idol from a Heroic Sacrifice, turned into a Beast Man along with his team because of his own recklessness, temporarily betrayed what he stood for in the midst of insanity, and ultimately had to pass the torch to others to defeat Makuta once and for all.
- Character Development: Probably the most in-depth in the entire storyline. He went from cripplingly self-doubting rookie to bitter loner with hurt pride to wise leader.
- Classical Anti-Hero: In Legends of Metru Nui and to a lesser extent much of the first third of Adventures. He's constantly crippled by doubt that he's capable of being a Toa and leader.
- A Day in the Limelight: The novel Time Trap, which is almost entirely about him, with the other Metru getting a line or two at best.
- David vs. Goliath: He has no real outlandish battle powers aside from his fire and mask, just creativity, his disk launcher and a few neat tricks, but is able go toe-to-toe with much bigger and powerful enemies. To date, in his brief tenure as a Toa, he effectively defeated Makuta singlehandedly without his elemental powers (Makuta claimed that he had the flu from absorbing Nivawk, Nidhiki and Krekka), later had an even fight with him using just his fire powers, and defeated the living dead Sentrakh while being turned to stone. Then there's when he holds both Makuta and the Shadowed One at bay by threatening to turn them to ash in seconds.
- Deadpan Snarker: His response to the Karzahni's proud proclamation that it was reborn?"Well, good for you."
- Did You Just Punch Out Cthulhu?: Defeated Makuta by throwing rocks at him. Also managed to badly injure Sentrakh, no mean feat at all.
- Failure Knight: It starts during the Toa Metru arc, but it really shows up during the Toa Hordika arc. This doesn't do well for his mental state at all.
- FaceHeel Turn: He joins Roodaka to gain command of the Visorak. He ends up going a bit farther than he wanted and needed to be reminded of his original motive.
- Guile Hero: Vakama's wit has been key to his major victories as a Toa; most notably both triumphs against Teridax and the Toa Hordika's defeat of Roodaka. That's also not getting into how he managed to sow the seeds of the Dark Hunter-Brotherhood war in a bid to escape with the Mask of Time.
- Heroic BSoD: Vakama gets pushed so close to the Despair Event Horizon (due to his increasing hopelessness over rescuing the Matoran, his own guilt over causing the mutation of his team, and the possibility that he wasn't even meant to be a Toa in the first place he readily accepts Roodaka's offer of command of the Visorak Horde just to gain any opportunity to fulfil his team's duty.
- Invisibility Cloak: His Kanohi Huna, Mask of Concealment. It doesn't conceal his shadow, however.
- Jetpack: Vakama Metru's Disk Launcher doubles as one. He only learns this after a Brainwashed and Crazy Nokama knocks him off a ledge.
- The Dark Side Will Make You Forget: Becomes Roodaka's lieutenant for the purpose of saving his friends but ends up nearly killing Matau.
- The Leader: Aside from a few grumblings from Onewa at the beginning, he is unambiguously seen as the leader of the Toa Metru.
- Leeroy Jenkins: Vakama when the Hordika arc starts, as he grows increasingly more impatient with failing to rescue the Matoran and starts taking more pronounced risks, to the worry and annoyance of the others.
- Psychic Dreams for Everyone: Vakama commonly has visions, and why hasn't really been explained.
- Red Eyes, Take Warning: Inverted, Vakama gets green eyes when during his FaceHeel Turn, but gets his original red eyes back in his HeelFace Turn.
- Sacred Flames: The Sacred Fire is a continuously burning fire that Turaga Vakama purportedly uses to divine prophecies, although in reality it's a cover for the visions he continues to receive. The fire itself does help him concentrate, however.
- Secret Secret-Keeper: He learned about the Order of Mata Nui (albeit only the existence of the organization and not its actual name) shortly before he became a Turaga, but didn't share the knowledge with anyone.
- Staring Down Cthulhu: He does this to Teridax, who (almost) admits that Vakama is a Worthy Opponent.
- Took a Level in Badass: Part of his massive Character Development, as detailed above. He started his time as a Toa struggling with his insecurities and his leadership responsibilities. Towards the end of his tenure, he develops Nerves of Steel big enough to emerge victorious from a skirmish with Sentrakh and force Makuta to temporarily surrender according to his terms.
- Ultimate Blacksmith: Specifically a "mask-smith". He was one of the best mask-makers in Metru Nui before becoming a Toa, and would use that ability to forge the Mask of Time from the Great Disks.
- What the Hell, Hero?: The inevitable result of his Leeroy Jenkins attitude that ends with the Toa Metru all mutated, but it's heavily deconstructed as the resulting scorn from his fellows coupled with his own self-loathing and fragile mental state brought on by the Hordika venom drives him into a full FaceHeel Turn, horrifying his fellow Toa.
- When Elders Attack: Turaga Vakama whacks a Rahkshi on the head with his Firestaff, though it really doesn't do much and it looks more confused than anything else.
Nokama enjoyed life as a teacher before becoming a Toa. She is peaceful and wise as one would expect, but also rather talkative and rather uncompromising in her beliefs.
- Epic Flail: Nokama's Hydro Blades.
- Informed Flaw: She's been said to insist on doing things her way. This doesn't come up much. However, Vakama does note in Time Trap that even she, one of the most level-headed Toa, would have insisted on fighting Teridax rather than compromising with him.
- Nice Guy: Easily the nicest of the Toa Metru overall.
- Number Two: To Vakama. It is acknowledged that she could capably lead the Toa Metru, but she has decided that it is Vakama's destiny to take the role. She does take the reins during Vakama's temporary FaceHeel Turn.
- Prongs of Poseidon: Turaga Nokama's Trident.
- Screw the Rules, I'm Doing What's Right!: At the beginning of Legends, she tells Jaller the truth about Mata Nui dying, disregarding Dume's orders not to.
- Spin to Deflect Stuff: Nokama Metru used her Hydro Blades this way.
- Translator Microbes: Her Kanohi Rau, Mask of Translation.
- Speaks Fluent Animal: It also translates Rahi-speak at Toa level.
- You Fight Like a Cow: She does this to three Rahkshi, shortly before dishing out a Curb-Stomp Battle.
Matau was just as impulsive and quick-witted as one would expect of someone who worked as a test driver. While glory-seeking and vain as a Toa, he eventually wisened into a respectable Turaga, though his humourous streak certainly never left.
- Butt-Monkey: In the movies, he has a tendency of crashing into things and is often a butt of the joke.
- Chainsaw Good: Matau's Kau Kau Staff, which is basically a Simple Staff with a buzzsaw on the head.
- Character Development: Had a high opinion of himself before getting over it. He's come to regret his constant whining when he discovered it drove Vakama to undergo a FaceHeel Turn.
- Cool Sword: Matau Metru's Aero Slicers, Matau Hordika's Fang Blades
- Glory Seeker: His main goal as a Toa was to gain recognition.
- Jumped at the Call: Was the most excited of the Toa Metru to become a "toa-hero".
- Master of Illusion: His Kanohi Mahiki, Mask of Illusion. At Toa level, it resembles Shapeshifting, but Greg Farshtey says that you only look like you're shapeshifting, as your physical form doesn't change.
- "Not So Different" Remark: Before his Character Development, his Glory Seeker behavior is similar to Makuta Teridax's reasons for heroism, according to Greg.
- Paper-Thin Disguise: Possible downplayed example. Despite having a rather useful mask power, in Legends of Metru Nui its shown that theres a glow in his head when he uses it, and yet Nidhiki and Krekka get tricked. But what makes this ambiguous is that we dont know if this is actually like that or just for the audience.
- Pride: Had a high opinion of himself until he realized the consequences of his attitude.
- Running Gag: Him crashing into things in the movies.
- Shapeshifting Trickster: Uses his shapeshifting powers to trick Nidhiki and Krekka into a fight.
- Ship Tease: With Nokama, though Word of God claims instances of Matau flirting with her is in Canon Discontinuity.
- Voice Changeling: The Mahiki allows him to change his voice to help with the illusions he creates.
- Watch Out for That Tree!: A Running Gag in Legends of Metru Nui for Matau slamming into solid objects.
- Winged Humanoid: Matau Metru with his Aero Slicers as wings.
Onewa was one of the best carvers in Metru Nui prior to becoming a Toa. While a courageous wise-cracker, he was also rather impulsive and pessimistic. Thankfully, he mellowed out as a Turaga, and was celebrated for his skill at settling disputes, earning the nickname "the Referee".
- Always Someone Better: Onewa was this to Ahkmou, leading to the latter's bitterness and resentment.
- Character Development: As a Matoran and Toa, Onewa was one of the most grouchy of any BIONICLE characters. Since then, he's mellowed out and has even become a sort of referee when arguments broke out.
- Contrasting Sequel Protagonist: With Pohatu, the previous year's Toa of Stone. While Pohatu is friendly and optimistic, Onewa is rather unfriendly and doesn't get along well with his team's leader.
- Deadpan Snarker: Goodness gracious, is he ever, particularly around Vakama.
- Drop the Hammer: Turaga Onewa's Stone Hammer.
- Epic Flail: Toa Onewa's Proto Pitons and Claw Clubs.
- Foreshadowing: During the climb to the Great Disk, Onewa has the horrifying thought that they might not have been meant to be Toa. Later, he's the one who discovers the evidence that Makuta forced Lhikan to choose them over the correct candidates. Thankfully they are the correct Toa Metru after all.
- Mind Control: His Kanohi Komau, Mask of Mind Control (but the control only lasts as long as he keeps his focus). He can also, when angry enough, unleash a devastating mental assault on his enemy (but again, it only lasts as long as he keeps his focus).
- "The Reason You Suck" Speech: Delivers a brutal one to Mavrah for his obsessive and hypocritical treatment of his Rahi friends and callousness towards the near-death of his former friend Whenua.
- Took a Level in Kindness: Onewa was a short-tempered jerk as a Matoran and Toa; as a Turaga he's mellowed into a Reasonable Authority Figure.
- Unstoppable Rage: Upon seeing Krahka transported into the Zone of Shadows, he promptly buries the Kahgarak that trapped her in a ton of stone.
- What the Hell, Hero?: He's prone to dishing these out, including a doozy to Vakama in Web of the Visorak.
Witty and quick to voice his dislike for anything, Nuju, as other scholars, stressed the importance of looking toward the future. As a Turaga, he speaks solely in the tongue of flying Rahi, feeling that only those willing to put forth the effort to understand him are worth his time.
- Animal Talk: Nuju, learned as a Toa Hordika from Kualus and used as a Turaga. Specifically, it's bird talk.
- Beware the Quiet Ones: Even before starting to speak in Animal Talk, Nuju didn't speak much. However, he's never been someone to mess with.
- Cool Sword: Nuju Hordika's Hordika Teeth.
- Despair Event Horizon: It's said that he was hit the hardest when news of Matoro's death came.
- Elective Unintelligible: As a Turaga, Nuju chooses to solely to speak in the bird language taught to him by Kualus. He had Matoro be his Translator Buddy most of the time.
- Goggles Do Something Unusual: Built into Toa Nuju's mask by Vakama when they were Matoran. It senses heat.
- Mind over Matter: His Kanohi Matatu, Mask of Telekinesis.
- OOC Is Serious Business: Upon hearing news of Matoro's death, speaks the Matoran language to announce it.
- Powerful Pick: Turaga Nuju's Ice Pick.
- Tricked-Out Shoes: Nuju Metru's Crystal Spikes could be used as snowshoes.
Before becoming a Toa, Whenua worked in an enormous museum called the Archives. Thus, he greatly believes in the importance of learning from the past, which put him at odds with the future-minded Nuju.
- Badass Bookworm: He constantly displays an excellent knowledge of Rahi, as well as being quite badass.
- Bifurcated Weapon: Whenua Metru's Earthshock Drills, which can be joined at the tips for greater piercing power.
- Flat Character: Doesn't have much consistent characterization other than "learning from the past is the way to live your life."
- Miniature Senior Citizens: More so than the other Turaga, as they were at least the size of the diminished Matoran. Whenua, on the other hand, became the shortest member among the entire cast before the Voya Nui saga.
- Night-Vision Goggles: His Kanohi Ruru, Mask of Night Vision.
- Pile Bunker: Whenua Hordika's Thumpers.
- Secret-Keeper: He, Onepu, Dume, and the Chief Archivist were the only ones who knew about the secret Rahi experiment. This comes back to bite him (almost literally) when it turns out that Mavrah isn't actually dead.
- This Is a Drill: Whenua's Earthshock Drills (as a Toa Metru) and "Drill of Onua" (as a Turaga).
- True Companions: With Onewa, as "earth and stone are brothers".
Nuhrii was Vakama's mask-making mentor, who grew jealous when the student surpassed the master. He planned to forge the Great Disk he found into a mask unlike any other.
- Amnesiac Dissonance: Downplayed, because he was never a true villain and took a few levels in kindness even before his amnesia. However, he's a much better Matoran on Mata Nui than he ever was on Metru Nui, where he was a bit of a Jerkass.
- Green-Eyed Monster: To Vakama, who didn't take well to how Vakama Surpassed the Teacher.
- Took a Level in Kindness: Goes from happily fleeing with Ahkmou to sitting on the latter when he tries it again.
Vhisola was incredibly possessive of Nokama, and got jealous anytime she hung out with anyone else. Once Nokama became a Toa, her jealousy reached a apex, and she sought the Great Disk to get even with her.
- Clingy Jealous Girl: Platonic example, for Nokama.
- Yandere: A somewhat downplayed and evidently platonic example. Vhisola isn't actively murderous or psychotic, but is still incredibly possessive of Nokama and perfectly willing to allow the Toa Metru to fail as long as she gets her teacher all to herself.
Orkahm was Matau's rival back on Le-Metru. Slow, meticulous, and unimaginative, he had a particular distaste for Matau's recklessness.
- And Then What?: It's never been elaborated on what Orkahm planned to do with his Great Disk.
- Stereotype Flip: "Slow, meticulous, and unimaginative" are not traits typical of a Le-Matoran.
- Ungrateful Bastard: Averted. While he does express to Matau after being rescued he never liked him for his recklessness and that he's certain becoming a Toa won't change any of that, he still honestly thanks Matau for saving him.
Ehrye was a mere errand boy for the seers and scholars of the Knowledge Towers, longing to join them, but lacking the patience and quietness to do so. He thought the Great Disk would be his key to joining them for real.
- Motor Mouth: One of several reasons he stood out like a sore thumb amongst the generally taciturn Ko-Matoran.
- Stereotype Flip: An impatient loudmouth who doesn't fit in with the rest of the quiet, studious Ko-Matoran. In fact, it was the simple fact his personality was so at odds that prevented him from being given a Knowledge Tower of his own.
A hardheaded Archivist who wanted to make his mark in the Archives, above all else.
- The Unfettered: A negative example: he's so consumed by his objective that he can ignore what actually matters.
- Token Good Teammate: He's easily the best out of the six Matoran, being at worst a bit eccentric and ambitious.
Selfish and amoral, Ahkmou was the traitor who allied with the Dark Hunters in the quest for the Great Disks out of jealousy. He was lost in the mass exodus from Metru Nui to Mata Nui, until Makuta found him and spun a web of lies to sway him on his side. He caused an epidemic in Po-Koro by selling infected Kohlii balls.
- Always Second Best: To Onewa.
- Ascended Extra: Twice over. His first major story role was as a secondary antagonist in the Mata Nui Online Game and his second was as a minor character in the Metru Nui storyline. Lorewise however, he's perhaps one of the most important Matoran in the story, for all the wrong reasons.
- Dirty Coward: Each time he's featured he runs away at the first sign of trouble.
- Evil Has a Bad Sense of Humor: Downplayed, since a) he's not really evil and b) it doesn't come up too much, but Onewa isn't very impressed with his "breath" joke.
- Failed a Spot Check: He's amusingly captured by Onewa when he walks right into him at the chute station.
- Green-Eyed Monster: To Onewa.
- It's All About Me: Everything Ahkmou does is in his self-interest.
- Jerkass: Even before being corrupted by Makuta, it's shown that Ahkmou wasn't a very pleasant fellow.
- Puppet King: He doesn't have much real power as "Turaga" other than enforcing Teridax's will, making him more of a Mouth of Sauron than anything.
- Secret-Keeper: Not by choice, but since he retained his memories of Metru Nui the Turaga forced him to keep his mouth shut about it.
- Snake Oil Salesman: He fell into this niche on Mata Nui, trying to sell various scam items to other Matoran. This turned sinister after it became clear that Teridax had subverted him, as he distributed Kohlii balls corrupted with the Makuta's power in order to drive Po-Koro's people to insanity.
- Stereotype Flip: The standard Po-Matoran is a stouthearted and dependable Boisterous Bruiser, while Ahkmou is a cowardly, deceitful traitor.
- Token Evil Teammate: While the other Great Disk Matoran weren't exactly upstanding people, they at least weren't as outright antagonistic as Ahkmou.
- Welcome Back, Traitor: Downplayed. He returns to Po-Koro even after his allegiance to Teridax was more common knowledge during the Bohrok crisis. He was mostly ignored because he didn't do anything during that time, apparently scared back into relative safety by his master's disappearance and from fear of the Bohrok.
DumeVoiced by: Gerard Plunkett, Armando Réndiz (Latin American Spanish)
The Turaga of Metru Nui, Dume was stubborn and not as close to the Matoran as other Turaga were, but nonetheless fiercely devoted to his city's protection. Makuta briefly captured and posed as him for his Evil Plan, but the Toa Metru eventually rescued him, and he resumed leadership of his city.
- An Offer You Can't Refuse: Subverted with the one that Vezok made him. It nearly got him killed, but he refused to allow the Dark Hunters to take root in Metru Nui.
- Good Is Not Nice: Dume is definitely good, but his distance to his people is not in his favour. It causes a serious problem at the beginning of Legends when he refuses to tell the Matoran what's going on, prompting Jaller to organise a mass strike until they give in.
- Grumpy Old Man: Dume can be surly and obstinate, especially when disagreeing with others.
- Mr. Fixit: His Kanohi Kiril allows him to regenerate and restore any inorganic material in his sight, up to and including Metru Nui itself. It can also heal the mechanical parts of other living beings.
- Noodle Incident: He saved the life of a Matoran Crafter called Lhikan 17,500 years before the Great Cataclysm.
- Old Soldier: When a small group of Visorak try to reinvade, Dume is right there in the thick of it with the Rahaga and Keetongu to stop them.
- Reasonable Authority Figure: We don't get to see much of it due to either Dume being usurped or the city being in times of crisis, but there's a reason he's been the leader of Metru Nui for so long.
LhikanVoiced by: Michael Dobson; Carlos Segundo (As a Toa), Francisco Colmenero (As a Turaga) (Latin American Spanish)
A well-respected veteran Toa of Fire. One of the last protectors of Metru Nui before the Great Cataclysm, and disappeared just before the Toa Metru were created.
- Barrier Warrior: His Mask of Shielding.
- Bling of War: His armour and mask were golden, instead of the usual fire red.
- The Captain: Was the leader of the Toa Mangai. Keyword is "was", as each one was systematically killed or, in the case of Nidhiki and Tuyet, made a FaceHeel Turn. By the time of the Metru Nui Saga, he was the only one left. He also at one point led a 300 toa army against an invading army of Dark Hunters. However they disbanded soon afterwards.
- Cain and Abel: With Nidhiki. Lhikan didn't take kindly to Nidhiki's attempted betrayal of the city to the Dark Hunters and had him banished from the city with them, and when they meet again centuries later Nidhiki's an insectoid monster who's all too eager to pay Lhikan back with interest.
- Cool Sword: His Fire Greatswords not only have multiple functions, but acts as a meta call-back to Toa Tahu's Magma Swords.
- Deathly Unmasking: Lhikan doffs his mask before dying from Taking the Bullet meant for Vakama.
- Dual Wielding: Comes with two Fire Greatswords.
- Eccentric Mentor: To Nuju, Whenua, and Onewa.
- Experienced Protagonist: By the time we meet him, he's already been a Toa for over six thousand years. Even by these people's standards, that's pretty impressive.
- Expy: Set-wise, he's pretty much Tahu with all of the good bits (His original Golden Kanohi Hau, Nuva-style armor and his Nuva form's swords).
- Famed in Story: The Matoran in Metru Nui looked up to him, and he also earned a certain amount of Villain Respect from the Dark Hunters.
- He also was this to the Matoran once they reached Mata Nui without their memories, remembered thanks to Vakama's stories as the fictional Ta-Matoran "Lhii the Surfer".
- I Let Gwen Stacy Die: Was this to Vakama, who Lhikan saved by surrendering himself to the Dark Hunters. He himself also felt this way about his original Toa team, who told him to escape while they held the line against an armada of Frostelus.
- Iron Woobie: After he answered The Call, he became a member of a team of heroic protectors for Metru Nui and became the hero who saved Metru Nui from the Dark Hunters and gave the middle finger to the Shadowed One. This would be a great gig if he wasn't a part of a different hero team's tragic backstory, as eight of his teammates were killed (including his Not-Girlfriend Naho) and two of them turned traitor. Even before that, he was the Sole Survivor of his original Toa team back when he was just a rookie, and he couldn't even fulfill his comrades' last wish to escape with their most important possession, a tablet containing information about the Brotherhood of Makuta, because it was stolen by thieves who would become Dark Hunters. Despite all of this, Lhikan does what needs to be done, helps save Metru Nui by becoming The Mentor to Vakama, and ends up Legendary in the Sequel.
- Legendary in the Sequel: Well, from flashback to present.
- Luckily, My Shield Will Protect Me: His swords can combine and form a shield, which doubles as a surfboard.
- The Paragon: Was seen and revered as such by the population of Metru Nui, both as the leader of the Toa Mangai and eventually the city's sole remaining protector due to his actions and victory during the Toa-Dark Hunter War. After Dume began to become more of a recluse really Makuta having replaced him, Lhikan stepped in to take a more active role in governing as well as protecting the Matoran, which only further endeared the people to him.
- Simple Staff: Gains one as a Turaga.
- Sky Surfing: With his Fire Greatswords.
- Taking the Bullet: For Vakama when fighting Teridax.
- We Used to Be Friends: He and Nidhiki were once on the same Toa team. It's turned particularly venomous by the time of the Metru Nui storyline too.
- Lhikan: You lost the right to call me "Brother" long ago!
Most Vahki were destroyed in the Great Cataclysm, but those who survived had their programming warped in a power surge, leading them to decide that law could be best kept if there were nobody alive to break it. However, they got wiped out in the Visorak invasion, and after the Matoran returned to the city a thousand years later the Turaga elected not to rebuild them.
There are six main models of Vahki, one for each district: Zadakh, Rorzakh, Bordakh, Nuurakh, Vorzakh, and Keerakh. There are also two special models for emergencies, the Kraahu and Kranua. Also of note were the Kralhi, a previous attempt at robotic law enforcers that were a failure, some of which fled dismantlement and became an obstacle against the Toa Metru.
- A.I. Is a Crapshoot:
- After the Great Cataclysm, an energy surge caused the Vahki's speech processors to slow down and made them think that eliminating anything alive was best in preserving the law.
- The Kralhi were this to a lesser extent, as while they fought back against being shut down their primary directive of protecting Matoran was still in place; Mavrah discovered as long as he didn't make any moves to shut them down, they would follow his orders to the letter (if somewhat reluctantly at times).
- Bubble Gun: The Kralhi fought trouble by shooting bubbles from their tails which drained the energy from its targets. The problem was that it left Matoran too drained to work, which was rather counterintuitive to the goal of making trouble-makers work again.
- Big Brother Is Watching: It's often implied, and the Rorzakh and Keerakh explicitly have this as part of their powersets.
- Black-and-White Morality: Well, they are machines.
- Clockwork Creature: Though not technically animals, their systems were predominantly clockwork.
- Detachment Combat: Kraahu; they often detach their legs in six different directions, while the other parts monitored the area.
- Dual Wielding: Each Vahki wields two staffs.
- Elective Unintelligible: They can speak the Matoran language, but high pitched so that others could not hear. At least prior to the Great Cataclysm.
- Flawed Prototype: The Kralhi. They were powerful and effective enforcers, but their main method of stopping troublemakers was ill-suited to leaving them in ready condition to do remedial work. They were set to be retired...but they didn't like the idea of being turned off and scrapped and fought back, fleeing into hiding.
- Flight: Prior to the Great Cataclysm.
- Hunting the Most Dangerous Game: The Kralhi under Marvah were a little too eager to hunt down the Toa Metru, and the one that was told by Mavrah to bring them to him alive (as he thought they were under orders from Dume to bring him back to the city) went to tell the others with body movement Mavrah could only describe as "disappointment".
- Mecha-Mooks: They are security robots mass-produced in Ta-Metru and Po-Metru. The straightest example of this in the entire series, as they 100% mechanical and 0% biological.
- Elite Mooks: Kraahu and Kranua.
- Mind Manipulation: All the main models had built-in staffs that fired bolts of energy that messed with lawbreakers' heads, rather than physically harming them. This changed after the Great Cataclysm, where their staffs became capable of firing bolts of energy capable of destroying targets.
- Charm Person: Bordak's Staffs of Loyalty, causes the target to act as an agent for the Bordakh.
- Compelling Voice: Nuurakh's Staffs of Command: fills the target's head with a single, overriding command
- Hypno Fool: Zadakh's Staff of Suggestion: causes the target to be more susceptible to following suggestions.
- Phlebotinum-Induced Stupidity: Vorzakh's Staffs of Erasing: erases the victim's memory, leaving motor functions intact.
- Seeing Through Another's Eyes: Rorzakh's Staffs of Presence: allows the Rorzakh to track the target's movements and behaviors from a distance.
- Standard Status Effects (Confusion): Keerakh's Staffs of Confusion: scrambles the victim's sense of time and place.
- Pulling Themselves Together: The broken-down Vahki attempt this after being nearly destroyed the Great Cataclysm, though it didn't stop the Visorak from eventually destroying them all.
- Run or Die: The tagline for the Vahki was a Never Say "Die" version: "Surrender or run".
- Scary Scorpions: The Krahli looked the part, in a Four-Legged Insect kind of way.
- Secret Police: They claim to enforce the law, but instead, Matoran are disappearing...
- Simple Staff: Subverted; their staffs have a wide variety of abilities and they aren't really staffs, despite the name.
- Super-Persistent Predator: Rorzahk were famous for this, more likely to chase a target halfway across Metru Nui than give up. An urban legend supposedly claimed that Rorzahk once plunged into a mine shaft - in freefall - to catch a lawbreaker.
- Super Smoke: Kranua. More like sand than smoke, but same principle.
- Transforming Mecha: Could switch between humanoid and insectoid configurations.
- Zeroth Law Rebellion: After the Great Cataclysm and the resulting power surge that fries most of the Vahki, the remaining Vahki decide that there would be no more disorder in Metru Nui if there were nothing left alive.
Makuta created this monstrous plant as part of his plan otherthrow Metru Nui. Taking root in the Great Furnace of Ta-Metru, the Morbuzakh spread its vines throughout the city to terrorize the Matoran into Makuta's clutches.
- Combat Tentacles: Well, combat vines, but close enough.
- Fantastic Flora: It was an enormous mass of vines that took nourishment from heat and flame. It was sentient, communicated via telepathy, and sensed the world by reading chemicals that reacted to motion in the air.
- Feed It with Fire: It fed off of fire and heat, hence why its king root grew in the Great Furnace. Because of this, it was weak to ice and cold, and barely touched Ko-Metru. The Toa Metru slayed it by using the Great Disks to encase its king root in an energy bubble, severing it from its food source.
- Filler Villain: It was defeated pretty quickly once the Toa Metru completed their quest for the Great Disks. It's telling that said quest was reduced to a montage in Legends of Metru Nui, and the Morbuzakh was in turn relegated to a mere cameo.
- Green Thumb: It is a plant monster after all.
- Snake Talk: As his quote indicates.
- Spike Shooter: It could grow and launch thorns at enemies.
- Toyless Toyline Character: Surprisingly, averted! The Offical German BIONICLE Magazine came pakaged with, of all things, a sponge toy representing the Morbuzakh's vines.
The Makuta created a prototype plant monster before the Morbuzakh, but the creature was too ambitious to serve him and was abandoned. The Karzahni was bred with an expiration date, and grew desperate for any means to defy its fate and take revenge on Makuta. Thus, when the Toa Metru encountered it when trying to find a cure for their poisoned comrade, Nokama, it arranged a deal to cure Nokama itself in exchange for some Energized Protodermis.
- Ambition Is Evil: Relatively speaking, anyway. It was too intelligent and powerful to be content with Makuta's role for it.
- Back from the Dead: After its attempt to transform itself went poorly, a single shoot eventually sprouted from a log and was fed by the Silver Sea, growing Karzahni back.
- Fantastic Flora: Just like it successor, it was a giant sentient plant (though more a "moss monster" than "vine monster") created for the purpose of capturing the Matoran of Metru Nui...except it was less interested in "capturing" them and more on "killing them and destroying the city."
- Flawed Super Prototype: Lacked the Morbuzakh's need to feed off of fire and heat since it no problems surviving inside the tunnels between Mata Nui and Metru Nui and also lacked its vulnerability to cold and ice, which it proved by casually shattering the ice Nuju tried to cover it with, but it was abandoned for being too powerful, too intelligent, and, what Makuta disliked most, too ambitious to be content as a mere servant."[in response to being mistaken for the Morbuzakh] No. I am what the Morbuzakh wished it could be."
- Green Thumb: Just like its successor. It's more moss than vines, though.
- Healing Hands: It was able to give Nokama a temporary cure for her poison, and eventually gave her a permanent cure once the Toa Metru fulfilled their end of the bargain.
- HeelFace Turn: A Downplayed example; it joined the good guys less out of a desire to do good and more to save itself and take revenge on Makuta.
- Kill 'Em All: Is rather upfront with the Toa Metru about the fact that if it were up to it, it would have killed the Matoran population of Metru Nui and brought the city down to rubble for no better purpose than the fact it wanted nothing but their destruction, rather than their loyalty or servitude like Makuta.
- Kill It with Ice: Averted. That weakness was added to the Morbuzakh in order to better control it. The Karzhahni was immune to the cold, as it proved to Nuju by casually shattered the layer of frost he coated it with it while chiding him about thinking he was weak like its successor.
- Named After Someone Famous: It was named after Karzahni, a legendary figure who would appear much later in the saga, as an In-Universe example of Names to Run Away from Really Fast.
- Noodle Incident: It mentions that a member of the Order of Mata Nui told it about the organization before they died. Presumably, the Karzahni didn't just ask nicely.
- Snake Talk: Similar to the Morbuzakh, though the Karzahni was a little better about it and saved it only for moments of extreme emotion.
- Wrong Genre Savvy: It assumed that it was destined for transformation by Energized Protodermis. It was wrong, though it wasn't like it had many other options otherwise.
- Your Days Are Numbered: Naturally, its main motivation was to defy this."We are all dying here, Toa. I merely intend to make sure I die last."
- Ambition Is Evil: The Shadowed One considers any Dark Hunter who dreams of someday taking over the organization (especially the most effective ones in missions) as the most dangerous.
- An Arm and a Leg: A common punishment for poor work, at least until the Shadowed One figured it was getting ludicrous.
- Battle Trophy: Several Dark Hunters often keep pieces of their foes as trophies or take their armor and weapons for themselves, such as Gatherer and Primal. The latter actually refuses to take missions that don't promise the chance for a good trophy.
- Code Name: Most Dark Hunters go by code names to maintain secrecy.
- Every Man Has His Price: If the Shadowed One deems the price worth it, his Hunters will take on any mission no matter how dangerous.
- Evil Versus Evil: The Brotherhood/Dark Hunter War.
- FaceHeel Turn: Nidhiki, along with several minor Hunters such as Savage and Spinner were once Toa, and Firedracax, Gatherer, Phantom, and Subterranean were once Matoran. Some of them didn't necessarily choose this willingly, however, as many were either shunned for their transformations and had nowhere to go, joined the Hunters for justified revenge, or were captured and transformed by the Hunters.
- Killed Off for Real: Several, such as Ancient and Guardian.
- Murder, Inc.: It's not their only purpose, but yes, they are basically one of these.
- Nothing Is Scarier: The Recorder, an entity that has only been described as a dark and twisted creature, always by the Shadowed One's side to record everything he says and does. It lacks a set, nothing is known about it's personality, and no history is given about this inexplicable being.
- Only in It for the Money: If the price is right, they'll do just about anything. That said, the Shadowed One will allow operatives to indulge in personal desires (such as revenge) as long as they don't compromise the mission objectives, and he himself hasn't always separated personal reasons from business sense.
- Resignations Not Accepted: When new recruits are brought to the island of Odina, they must first pass tests ranging from physical to psychological. Those who fail...are allowed to leave alive, as they're originally brought to Odina without knowing its location. Once one joins, however, it's a life job, and renegades and traitors are hunted down without mercy to be killed or brought back in order to keep Dark Hunter secrets from leaking out.
- Ultimate Job Security: Several Dark Hunters are insubordinate enough that if it wasn't for their ruthless efficiency while on the job they would have been executed or worse long ago. The Shadowed One contents himself with merely punishments for sufficient failure ("dismemberment and replacement" of body parts is a favored tactic) and assigning them partnerships with Dark Hunters whose brawn and loyalty trump their intelligence (it worked with Nidhiki, but some like Vanisher tended to have their partners "accidentally" die during their first missions together).
- Was Once a Man: Several of them were once Matoran, Toa, or otherwise mutated by accidents or experiments or were grievously wounded and rebuilt.
"The Shadowed One"
- Bad Boss: Given that his underlings are rogues and murderers, he kind of has to be, since it's the only way to keep them in line.
- Berserk Button:
"I dislike a traitor, but I despise an incompetent one."
- The Shadowed One takes his pride as a leader very seriously. Any Dark Hunter who fails or is too disobedient will die. A Dark Hunter who dares betray him will wish for death. Should anyone kill one of his Hunters, he'll make them pay, and if that someone has an army, he'll declare war! The Toa-Dark Hunter War started because he became so obsessed with gaining a power base in Metru Nui that, combined with the constant failure of his Hunters to sabotage the city, he finally decided to wage full-on war with the city.
- Failure and treachery in particular gets under his skin, since they both reflect on his stature as a leader. But what he hates above all is a traitor who couldn't even succeed in doing it right.
- Blade on a Stick: His Staff of Protodermis, which creates crystallized Protodermis to restrain his foes.
- Control Freak: Has shades of it, considering he sees disobedience as grounds to warrant killing someone. Justified though, considering the fact that a good chunk of his organization is made up of cutthroats who wouldn't hesitate to jump on any perceived weakness to kill him.
- Eye Beams: The Shadowed One's eye lasers can disintegrate almost anyone.note
- Faux Affably Evil: The Shadowed One can put on a polite facade easily. When the Piraka originally rebelled against him, he gives no show of anger as they tremble before him, remaining completely calm and saying nothing. He then smiles...and just when Vezok begins to feel safe, he shoots Zaktan with his Eye Beams with the full intent of killing him and showing the others the price of treachery.
- For the Evulz: Half the reason The Shadowed One does something cruel is because he's sending a message to his enemies or his subordinates. The other half is just because he gets a good laugh out of other people's suffering.
- From Nobody to Nightmare: He started off as just a resident of a bleak, icy realm, and carved out a living with his co-founder Ancient in hiring out his services to anyone willing to pay, and his services consisting of any job Matoran or the Brotherhood of Makuta saw as being unwilling to do. One civil war in his realm later, and he and Ancient finally decided the universe had a place for a band of mercenaries willing to do anything for the right price.
- Implacable Man: He endured Rapid Aging after being thrown into Voporak's time field, and still rules the Dark Hunters no worse for the wear.
- I Owe You My Life: Admits that he does owe Sentrakh his life after the Dark Hunter took him away from Metru Nui and returned him safely to Odina despite his injuries. In what is possibly the closest the Shadowed One will ever come to a Pet the Dog moment, he admits that this act is what will be the ultimate reason behind the day when he finally "frees Sentrakh of his empty existence".
- No Name Given: The Shadowed One's true name is lost to time. The only person who knows what it is aside from himself would be Ancient and that's a secret Ancient took to the grave.
- Pride: His major Fatal Flaw, and closely linked to his second in Wrath. The Shadowed One sees himself as the master manipulator of the universe and reinforces it in his mind by his merciless iron control of the Dark Hunters and his ruthless dealings across the universe. Anything that threatens that control, be it defiance from his enemies or treachery or even disobedience from his own Hunters, is enough to send him into a killing or torturing spree to reassert his dominance. He nearly chokes one of his scribes to death simply for claiming, in attempting to appeal to his ego, that he is "second only to Makuta." This was before he even started the Brotherhood-Dark Hunter War.The Shadowed One: Understand this, scribbler I am second to no one! Least of all that scheming, arrogant, walking scrap of shadow....
- Red Eyes, Take Warning: They even glow before he shoots his disintegrating Eye Beams.
- The Starscream: Deliberately invoked by the Shadowed One, who specifically hired a Dark Hunter codenamed "Darkness" to constantly watch him, and kill him if he ever shows a sign of weakness.
- Unknown Rival: To Makuta Teridax. The Shadowed One despises even the insinuation that he is "second-best" to Teridax, yet Makuta can't even be bothered to consider him a real threat. Makuta's final words to him in Time Trap all but states that he views the Shadowed One as an annoyance desperately trying to get his attention by interfering with his plans.
- Virtue Is Weakness: The Shadowed One looks down on things like friendship and honor, seeing them at worst as shackles that hold one back, and at best tools to manipulate suckers to his side.
- Where I Was Born and Razed: While he doesn't claim direct responsibility, he mentions that his and Ancient's homeland was consumed by civil war that's heavily implied to have been caused by the residents trying to hire out their services (which they were happy to oblige and even often betrayed their employers to new ones if they got better offers). Then there's the fact he and Ancient drove off and killed the native population of Odina to make it the Dark Hunter home base.
- You Have Failed Me: The Shadowed One does not tolerate failure, to the point of having a Dark Hunter, conveniently codenamed "Eliminator", with the specific task of eliminating any Hunter that fails their mission, and finishing the mission himself.
SentrakhThe results of experiments to make more obedient Dark Hunters, Sentrakh is the Shadowed One's undead bodyguard, having no existence beyond serving him.
- Casting a Shadow: Though not Elemental Powers, he can cloak a target in darkness.
- Eldritch Abomination: Even without being undead, his Combo Platter Powers lean towards this.
- Empty Shell: He has no existence beyond serving the Shadowed One. The Shadowed One has considered rewarding him with a Mercy Kill, and that's unlikely to happen anytime soon.
- Laser-Guided Amnesia: He can both induce this and suffers from it as a result of the experiments done to make him loyal. Apparently, his amnesia went much further than simple "forget who you are", because the Shadowed One cites the time spent reeducating him as the main reason the experiments were discontinued.
- The Needless: Mentioned in passing during Time Trap that he has no need to eat or sleep due to his "condition."
- Only Friend: To the Shadowed One, and that's because the Shadowed One knows he quite literally can't betray him.
- Our Zombies Are Different: He's said to inhabit a "shadow state between life and death". Vakama even expressed the private belief after their battle he wasn't even sure if Sentrakh could die, despite the Dark Hunter being rendered seemingly unconscious from an explosion of Energized Protodermis and not knowing of his full condition.
- Taken for Granite: He has the ability to petrify those he's in physical contact with, as he shows to Vakama to the Toa's almost fatal regret.
- Underestimating Badassery: Does this to Vakama, who promptly shrinks him and then indulges in the trope himself, as being smaller doesn't remove Sentrakh's ability to start turning Vakama to stone via physical contact.
- "Instant Death" Radius: Anyone who steps into his time field is rapidly aged until they eventually die, all in a matter of seconds. Keep in mind this is also a world where the average lifespan of a person is usually measured in thousands of years.
- Logical Weakness: Only one weakness was ever exploited against Voporak, which was taking away air via a vacuum (since no amount of time would create air where there was none and even he needed to breathe). Teridax thought of this approach during his battle with The Shadowed One.
- Power Incontinence: While he can consciously choose what his temporal field effects with no problem, should he be rendered unconscious it will keep going without pause and age anything that touches him. This nearly killed the Shadowed One when Makuta threw him at the unconscious Voporak and he started going through Rapid Aging.
- Time Master: Voporak can willingly give off a temporal force field that drastically ages anything thrown at him, this power becoming extremely potent through touch. His abilities however have no effect on the Mask of Time itself. Voporak is also sensitive to fluctuations in the fabric of time, allowing him to sense the use of and track the Kanohi Vahi. His Rhotuka has the ability to distort an opponents sense of time, knocking their perception of time backwards by several seconds and distracting them so he could get within range of using his Touch of Death.
- Walking Wasteland: The aforementioned time-dilation field makes him able to annihilate entire areas by simply walking around in them.
- Whatever Happened to the Mouse?: We never find out what happens to him after he steals the Vahi in Destiny War.
NidhikiVoiced by: Paul Dobson, Arturo Mercado (Latin American Spanish)
Nidhiki was once a Toa of Air alongside Lhikan, until the shadowy Lariska convinced him to betray Metru Nui to the Dark Hunters. Lhikan turned the tables and had Nidhiki banished, where his reputation as a traitor ensured he wasn't trusted for any real missions. His attempts to buy passage and start anew were met with horrible mutation, ensuring he wouldn't be anything but a Dark Hunter.
- All for Nothing: Even if he had successfully betrayed Metru Nui to the Dark Hunters, they never would have let him rule the city. The Shadowed One would have had Lariska finish him off the instant they didn't need him anymore.
- Ambition Is Evil: It certainly is when it involves selling out the city you're protecting and the rest of the Toa.
- Blood Knight: Nidhiki enjoyed a good fight.
- Brains and Brawn: The brain to Krekka's brawn.
- Cain and Abel: Nidhiki, with Toa Lhikan. He look a lot of pleasure out of capturing Lhikan when he finally returned to Metru Nui.
- The Corruptible: Lariska convinced him to turn his back on his former friends for power, and whatever goodness and regret he had was lost after Roodaka mutated him.
- Cruel Mercy: Lhikan unintentionally did this to him when he banished him with the Dark Hunters, and the Shadowed One did this intentionally when he was mutated after he tried to leave the Dark Hunters.
- FaceHeel Turn: Turncloaks after Lariska convinces him that the war is futile. He actually seems somewhat regretful for it...but Roodaka's mutation puts an end to any hope of redemption.
- Fallen Hero: He was once a Toa who defended Metru Nui from harm for a thousand years. He was always flawed, but he did genuinely do the right thing because it was his duty, and spends quite a bit of time after reminiscing how good it felt. After his transformation, however, the last good bit of him died.
- Fatal Flaw: Ambition and selfishness. They costed him his friendship with Lhikan, the respect of Metru Nui, and eventually his very form as a Toa of Air.
- Had to Be Sharp: Since he first became a Toa on the incredibly unpleasant Tren Krom Peninsula, he had to learn to be a pragmatic sort.
- Invisibility Cloak: Toa Nidhiki's Mask of Stealth had near-invisibility.
- Karmic Transformation: Nidhiki being mutated into a insect-like being, the very thing he feared.
- Killed Off for Real: As he was absorbed into Teridax, he could not be revived aboard the Red Star.
- Mysterious Mercenary Pursuer: Him and Krekka, to the Toa Metru.
- Perception Filter: In practice, this was Toa Nidhikis mask power. In contrast to the complete invisibility granted by a Huna, his Kanohi Volitak offers partial invisibility as well as reduced sound, making him all around harder to notice.
- Power Pincers: After his mutation.
- Rewarded as a Traitor Deserves: "Well, I'll find a place where they need a Toa, and aren't too particular about that kind. And if Lhikan or one of those Metru Nui heroes tries to take it away from me, I'll make them regret the day they put on a Kanohi. All I need is for Roodaka to help me get what I deserve..." Next thing he knew, Roodaka did just that.
- Sinister Scythe: He wielded an Air Scythe as a Toa.
- Teeth-Clenched Teamwork: Hated working with Krekka, and if the Shadowed One didn't make it clear that he would be punished if Krekka was somehow killed during a mission, Nidhiki would have let him die or done the deed himself a long time ago.
- That Man Is Dead: Whatever was left of the Toa hero Nidhiki used to be after betraying Metru Nui died after his mutation by Roodaka.No one spoke of a word of mourning for the Toa who had just died ... and no one spoke a word of welcome for the Dark Hunter that had just been born.
- The Starscream: Schemed to betray Metru Nui to the Dark Hunters, which failed and got him sent off the island with them. Schemed to escape life as a Dark Hunter and become a Toa somewhere else, which failed and got him mutated. Schemed to take revenge on the Shadowed One for his mutation and find a way to conquer the Dark Hunters for himself, which ultimately didn't pan out because he got killed and absorbed by Makuta before he could make it happen.
- Virtue Is Weakness: Mocks Lhikan for willingly surrendering himself out of the belief he would spare Vakama's life when he made no indication he would. He drops Vakama into the lava forge anyways, and it's only Lhikan's reflexes that save the future Toa of Fire from certain death.
- We Used to Be Friends: With Lhikan. Nidhiki's little act of treachery put rest to any of that.
- Why Did It Have to Be Snakes?: Nidhiki was afraid of insects as a Toa, making his mutation an ironic one.
- You Can't Go Home Again: His betrayal left him banished from Metru Nui, and his mutation meant he would never again be welcomed in the lands of Matoran.The Shadowed One: You are a monster, Nidhiki. Matoran seeing you would run screaming. You will never be cheered, never be admired, never be hailed as a savior by the crowds. What are you now? A Toa of Nightmares? A hero, Nidhiki, or a horror? No, I think you will find your place is now, and forevermore, with the Dark Hunters. For who else would have you?
KrekkaVoiced by: Michael Dobson, Jorge Santos (Latin American Spanish)
Krekka's brute strength saw him through many battles, and his monumental stupidity ensured he had no thoughts of disloyalty. Thus, he was frequently partnered with Nidhiki to keep a lid on the ex-Toa's ambitions.
- Brains and Brawn: The brawn to Nidhiki's brain.
- The Brute: Oh yeah.
- Dumb Muscle: Though shockingly, he's not the dumbest Dark Hunter. That title goes to Airwatcher.
- Eye Scream: On the receiving end of this, courtesy of Gorast.
- Flying Brick: Well, he can fly, and he's a Mighty Glacier, so yeah.
- Killed Off for Real: The same situation as Nidhiki.
- Mighty Glacier: Very slow in both mind and body, but very powerful.
- Mysterious Mercenary Pursuer: Him and Nidhiki, to the Toa Metru.
- Remembered I Could Fly: Has forgotten at least once that he could fly, requiring Nidhiki to point it out to him.
- Shoulder Cannon: His shoulder-mounted Disk Launcher.
- Super Strength: Not a rare ability in-universe, but Krekka was so inhumanly strong that Makuta Gorast cited a punch from him as one of the strongest blows she'd ever received. Which is notable as the other incident she mentions is being on the wrong end of a Tahtorak charge.
- Teeth-Clenched Teamwork: Averted on his end of the partnership with Nidhiki. Krekka was usually perfectly fine with following Nidhiki's lead on missions despite knowing of the ex-Toa's dislike of him, save when Nidhiki started scheming for his own profit.
Lariska is the energetic and deadly Dark Hunter who convinced Nidhiki to betray Metru Nui.
- Artificial Limbs: Her left arm is robotic after a punishment from the Shadowed One.
- Badass BoastLariska: (to Hakann) First lesson, Rahi bones. Don't turn your back on an enemy until you're sure she's stopped breathing. And don't turn your back on a Dark Hunter until her body has rotted in the sun and her armor's been scattered to the winds."
- Badass Normal: Despite lacking any major powers, her agility, stealth, tracking skills, and accuracy with throwing knifes make her one of the most dangerous Dark Hunters. She defeated Hakann during his "initiation" match and if he hadn't acquitted himself well during it the Shadowed One likely wouldn't have hesitated in letting her slit his throat.
- Dark Action Girl: A ruthless assassin and mercenary.
- Genki Girl: If she's not busy with a mission (and even sometimes if she is), she'll spontaneously flip and twirl about.
- Knife Nut: She's got at least three.
- Poisoned Weapons: To the point that the blades are stained green.
- Noodle Incident: Whatever it is she did that caused The Shadowed One to punish her badly enough to replace her arm with a purely mechanical one.
- Toyless Toyline Character: What we do know about her appearance is that she has blue and green armor and a completely robotic arm.
The horde eventually disbanded after Sidorak's death, on the orders of Toa Vakama (who was at that point their general). The Brotherhood was able to bring some Visorak back under their control, but with Makuta's plan coming to fruitition the Order of Mata Nui took the step of eradicating the species. Makuta recreated them soon afterwards, though. With his demise, the fate of the horde remains unknown.
The Visorak breeds are Keelerak, Vohtarak, Boggarak, Roporak, Suukorak, Oohnorak, and elite Kahgarak.
- Barbarian Tribe: As seen in Web of Shadows, they aren't exactly... civilized.
- The Berserker: Vohtarak can make charges described as this, becoming invulnerable.
- The Corruption: Hordika Venom causes anyone afflicted by it to become an animalistic Beast Man. Assuming they don't just kill you first.
- Energy Absorption: Roporak's disruptor Rhotuka.
- Everything's Better with Spinning: All Visorak can launch Rhotuka Spinners from their backs; Keelerak can also spin like buzzsaws.
- Four-Legged Insect: With the exception of some Kahgarak, all Visorak have four limbs.
- Giant Spiders: They're a little larger than the average Toa.
- Hollywood Acid: Keelerak's acid Rhotuka.
- Invisibility Cloak: Roporak can camouflage.
- The Man Behind the Monsters: Sidorak and Roodaka, later the Brotherhood as a whole.
- Mooks: The primary enemies of the second half of Adventures, but they're upstaged by the Rahkshi and the Skakdi for the Brotherhood, though still present.
- Elite Mooks: Kahgarak, being larger and more powerful than other Visorak.
- Proud Warrior Race Guys: It doesn't come across a lot, but it's there; they believe themselves quite superior to all other Rahi and Toa.
- Spiders Are Scary: They are seriously unnerving in Web of Shadows.
- The Swarm: Their name means "poisonous scourge".
- Teleporters and Transporters: Kahgarak's Rhotuka can open portals to a pocket dimension of darkness.
- Theme Naming: It's subtle, but the six main breeds incorperate the elemental prefix in their names. (Keelerak, Vohtarak, Boggarak, Roporak, Suukorak, Oohnorak is the Odd Name Out; it's name vaguely has the Onu syllable in it)
- Voice Changeling: Oohnorak can mimic voices.
SidorakVoiced by: Paul Dobson, Rubén Moya (Latin American Spanish)
- Butt-Monkey: Post-death. You'd think with the revelation that the Red Star was a Respawn Point for dead Matoran Universe inhabitants would give him another chance to prove himself, but nope! Apparently the damage was too severe to revive him.
- Characterization Marches On: Early material portrayed him as a competent, capable warlord who's flaw was being too preoccupied with his conquests to notice Roodaka scheming against him. He would then go on to be a cowered and incompetent who only achieved his prior reputation by stealing credit for the successes of his subordinates.
- Deader Than Dead: The Red Star revives most people in the Matoran universe when killed, outside of special circumstances. His skull being crushed by Keetongu left Sidorak's body beyond repair.
- Family-Unfriendly Death: Keetongu crushed him so badly, the Red Star couldn't bring him back.
- Feet of Clay: He makes himself out to be a decorated and powerful commander, but is more and more revealed to be a pompous buffoon who takes credit for others' accomplishments to climb the ladder.
- Frontline General: One of his positive qualities is that he is a skilled commander who prefers leading his hordes in their conquest directly (at least in the initial stages of occupation). However, this tendency is just as much a coping mechanism since deep down he feels he didn't properly earn the title of Visorak King since he took credit for Roodaka's victory over the Toa Hagah, so he throws himself into the front lines to always appear as a leader to the horde.
- Glory Hound: Obsessed with earning power and prestige to the point he'd gladly take credit for other people's accomplishments, like how he did with Roodaka's capture and mutation of the Toa Hagah to become the King of the Visorak Horde with her as his viceroy. One wonders if that played a role in her planned betrayal and his death.
- Imperial Stormtrooper Marksmanship Academy: He was a lousy shot, repeatedly missing the large Keetongu even before the Rahi noticed him and began intentionally dodging.
- Personality Powers: As someone who works best as a commander, his Rhotuka Spinner power makes his targets loyal to him for 24 hours, and his Herding Blade can signal commands to his armies.
- Smug Snake: Big time. Most of his "accomplishments" are him taking the credit from others, and isn't as powerful as one may think.
- Sword Beam: He can fire one from his Herding Blade.
- We Can Rule Together in Unholy Matrimony: Sidorak to Roodaka. She strings him along until she's set things up so she could say I Can Rule Alone.
RoodakaVoiced by: Kathleen Barr, Rebeca Patiño (Latin American Spanish)
- Baleful Polymorph: Her Rhotuka Spinner's power produces permanent grotesque transformations in her victims that only reversible by another hit from them. She transformed Nidhiki from a Toa into his insectoid appearance and turned all of the Toa Hagah into the Rahaga though she was forced to reverse it during the Order-Brotherhood War.
- The Baroness: Softer example, but her portrayal in Web of Shadows definitely had some of this to it, and in general she's very devoted to Makuta and wears black armour.
- Boobs of Steel: Quite Literally, and the only Bionicle set that does this. She's also a deadly fighter.
- Boxed Crook: When the Dark Hunters and Brotherhood finally catch on to her double-crossing, she's captured by the Order and made to serve in exchange for protection.
- Casting a Shadow: Non-elemental shadow powers.
- The Chessmaster: During Adventures she arranges the FaceHeel Turn of Vakama and manipulates Sidorak and the horde with ease. After Adventures however, she loses her touch.
- The Corrupter: Almost successfully convinces Vakama to perform a complete FaceHeel Turn, although he was also poisoned with The Corruption at the time.
- Dark Action Girl: Despite being a schemer, she's also very capable in a fight, as shown when fighting Krakha and physically overpowering her despite her abilities. There's also the fact she defeated four of Toa Hagah by herself and turned them into Rahaga.
- Double Reverse Quadruple Agent: Sells information on the Dark Hunters and the Brotherhood to each other.
- Femme Fatalons: She's described as having claws, and then there's her weapon, the Catcher Claws.
- Hoist by His Own Petard: Roodaka manipulates the emotionally vulnerable Vakama and convinces him to desert his comrades, appointing him General of the horde. When Vakama regains his senses, he takes full advantage of his appointment to get the Visorak to desert her.
- Lady Macbeth: Well, not "marriage", but she's easily the more sociopathic and effective between her and Sidorak.
- Manipulative Bitch: The lady double-crossed both the Dark Hunters and the Brotherhood, to say nothing of her manipulations regarding Sidorak and Vakama.
- More Deadly Than the Male: Admittedly, this is mainly due to Sidorak being a complete incompetent, but the female race of the Vortixx is known for being considered much deadlier and cunning than the males of the species.
- Ordered to Die: Roodaka demonstrates her authority over the Visorak to Vakama by ordering a few Visorak to jump off a cliff.
- Personality Powers: Roodaka loves nothing more than to torture and cause misery in others while watching them. Her Rhotuka Spinner, thus, induces monstrous, permanent transformations on her victims that leaves them recoiling in horror.
- Planet of Copyhats: Roodaka's a female leader, therefore her home island is a matriarchy. She plays all sides, therefore her people sell weapons to everyone (though at least they're open about their neutrality). Apparently, even the males of her race look like her.
- Rewarded as a Traitor Deserves: After Roodaka engineered Sidorak's death, the Visorak were only too happy to follow Vakama's order to abandon her.
- Shoot the Messenger: Roodaka does this to the Visorak who tells her of the Toa Hordika's escape.
- The Starscream: To Sidorak. He was always a pawn in her long game to being seen as the perfect minion to Makuta.
- Tertiary Sexual Characteristics: She is the only BIONICLE character whose set and movie appearances featured a curvy figure, including a claw piece on her hips to suggest a curvacious caboose, and...
- Non-Mammal Mammaries: Her set in particular features Rahkshi heads as her *ahem* assets.
- The Vamp: Her... persuasion of Vakama has this touch to it initially.
The most powerful trump card of the Visorak horde, the Zivon was a giant insectoid/crustacean Rahi used as their final solution to very difficult foes. Normally living within the Zone of Darkness, the Rhotuka spinners of the Kahgarak would summon the Zivon into the world to annihilate the enemy before being sent back, though not before taking its fill in the victory feast provided by its fellow Visorak...preferably with about a third of them as the main course.
- All Webbed Up: It can fire webbing from its legs to entrap foes and leave them easy pickings.
- Animalistic Abomination: Its presence certainly gives off this vibe, being a giant mish-mash of insectoid/crustacean creatures that lives in a dimension without light that terrifies even the Giant Spiders that have conquered entire islands.
- Beware My Stinger Tail: Powerful enough to punch through the thick hide of the Tahtorak, though the lizard responded by ripping it off.
- Big Creepy-Crawlies: It has the head of a Visorak (spider), the legs and major body of a massive lobster or crab, and the claws and stinger tail of a scorpion all on a creature that dwarfs buildings.
- Big Eater: According to Bomonga, the Zivon's idea of a victory feast involves consuming about a third of the spider horde it fights alongside.
- Godzilla Threshold: The Visorak consider its summoning this, since the Zivon's main meal is Visorak and that one way or another, a lot of them are going to end up dead by the end of it.
- Hollywood Darkness: Averted by its home dimension of the Zone of Darkness. When Whenua and Bomonga get trapped there, Whenua (who's used to low-light conditions), can't see anything and its only through sound and touch does he know Bomonga is with him him. The Zivon itself is so used to the total darkness that it knows when a dimensional portal opens because it appears like a giant glowing beacon, and it's completely unaffected by a smoke cover that Vakama tries to throw up at one point and just keeps going unimpeded.
- Kaiju: Well over thirty feet tall and capable of throwing down with other massive Rahi like the Tahtorak.
- Nigh-Invulnerable: Its shell is incredibly hard, to the point it No Sells everything short of attacks from the similarly giant Tahtorak. Even then, the Zivon shrugs off strikes that include getting tossed through the air, smacked with a building, and slammed headfirst into the ground with barely any ill effects aside from slight disorientation. It takes the Tahtorak ripping the Zivon's stinger off to finally elicit a true scream of pain.
- Scary Scorpions: It resembles one with it's massive pincers and stinger tail.
- Sealed Evil in a Can: Its usually spends time trapped in the Zone of Darkness, and once its job is done it gets sent right back in. It doesn't seem to mind as long as it gets fed, however.
- Sense Loss Sadness: Its four Rhotuka spinners can cause blindness, deafness, muteness, and numbness.
- The Artifact: The two released Toa Hagah sets were originally intended to be Toa versions of Dume and Nidhiki before being converted into Norik and Iruini. As this change occurred fairly late in the development process, the two retain some of Dume's and Nidhiki's design hallmarks. Norik's mask happens to be shaped like Dume's Kanohi Kiril, but it is a functionally different mask altogether called the Kanohi Pehkui. Meanwhile, Iruini's Kanohi Kualsi has facial fins reminiscent of those found on Nidhiki's mutated face. These design relationships have absolutely no bearing on the narrative.
- Blade on a Stick: All are equipped with these in both forms, such as Norik's Lava Spear and Iruini's Cyclone Spear (though the Rahaga versions are closer to Simple Staffs).
- Bling-Bling-BANG!: Their armor is said to be forged from precious metals.
- Bodyguarding a Badass: Did this for Makuta. There were other Hagah teams that did the same for other Makuta.
- Lotus-Eater Machine: Makuta stuck them in one for a little while.
- Luckily, My Shield Will Protect Me: They have Rhotuka Launching Shields in their Toa forms in addition to spears.
- Praetorian Guard: to Makuta, and there were other Toa Hagah teams that performed similar duties.
- The Team:
NorikVoiced by: French Tickner, César Izaguirre (Latin American Spanish)
Norik is a celebrated hero who prefers to lead by example rather than words. As a Rahaga, he focused on catching reptilian Rahi, using his staff to distract and his Rhotuka to snare.
- Incredible Shrinking Man: His Kanohi Pehkui, Mask of Diminishment.
- Lava Adds Awesome: His Lava Spear.
- The Leader: Of the Hagah, and served as a mentor to Vakama and the other Hordika. Pity Vakama wasn't in the mood to listen...
IruiniVoiced by: Trevor Devall, Ricardo Tejedo (Latin American Spanish)
Iruini was often at odds with the others for feeling that more time should be spent on smaller dangers. As a Rahaga, he focused on climbing Rahi, using his staff to hypnotize and his Rhotuka to snag.
- Boisterous Bruiser: Like most Toa of Air.
- Changed My Mind, Kid: Iruini defected from the Toa Hagah over a dispute, but returned to rescue them when they were captured for opposing the Makuta, unfortunately, it wasn't enough to stop them from being mutated.
- The Cynic: Unlike the others, he doesn't believe in Keetongu.
- Teleporters and Transporters: His Kanohi Kualsi, Mask of Quick Travel.
Kualus is determined and wise, having learned the language of flying Rahi. As a Rahaga, he could play his staff like a flute to commune with flying Rahi, and his Rhotuka could latch onto them and pull them to him.
- Animal Talk: Used by Kualus, specifically bird talk.
- The Beastmaster: His Mask of Rahi Control.
- Eccentric Mentor: To Nuju.
- Speaks Fluent Animal: Kualus to birds.
- Zen Survivor: He definitely fulfills this trope.
GaakiVoiced by: Kathleen Barr, Joana Brito (Latin American Spanish)
Gaaki is a feisty hero determined to prove herself. As a Rahaga, she focused on aquatic Rahi, using her staff to bait the waters and her Rhotuka to bring targets to the surface.
Pouks is a straightforward, boisterous fellow who believes in the direct approach. As a Rahaga, he focused on large land Rahi, using his staff to leave an invisible track mark and his Rhotuka to bolo them by the legs.
- Boisterous Bruiser: It's not diminished as a Rahaga either.
- Casual Danger Dialogue: Spends his encounter with Krahka insulting her movements.
- Power Copying: His Mask of Emulation.
- You Fight Like a Cow: Even when Krahka has him in her coils, he continues simultaneously insulting her and praising her.
BomongaVoiced by: Scott McNeil, José María Negri (Latin American Spanish)
Bomonga is known for his silence and incredible patience. As a Rahaga, he focused on insects and nocturnal Rahi, using his staff to read seismic activity and his Rhotuka to silently hold his target in place.
- Badass Normal: In comparison to other giant creatures when he joins their ranks using his Mask of Growth, he's far weaker. He compensates with his knowledge of pressure points.
- Combat Pragmatist: He has to be when tangling with other giant creatures.
- Genius Bruiser: Manages to make up for his lack of strength with leverage and pressure points.
- The Quiet One: It certainly helped for his Rahi catching.
- Sizeshifter: His Mask of Growth.
- Super Strength: Averted. His strength remains the same even when he grows.
KikanaloThese large, canyon-dwelling herbivores liked to dig up Protodermis with their horns and tusks. While often brushed off as dumb beasts, they're actually gentle and smart, though they're plently able to defend themselves with stampedes and sonic roars.
- Horse of a Different Color: Toa could ride them.
- In a Single Bound: This is how they stampede.
- Make Me Wanna Shout: Their sonic roars are capable of blowing away Vahki squads when used in tandem.
- Underestimating Badassery: As noted above, they're not just big, dumb animals-they're big, smart animals with sonic roars.
- All Your Powers Combined: Her best-known form is a Shapeshifter Mash Up of all six Toa Metru.
- Confusion Fu: A big part of how she fights. She uses her Shapeshifting liberally to take on different forms with different powers to overwhelm her enemies.
- How Do I Shot Web?: Averted by her Required Secondary Powers; copying an opponent not gives her access to their powers, but also some of their memories too, meaning she already has a basic grasp on their capabilities and how to use them.
- Imposter Forgot One Detail: Tried to use Nuju's form to trick the Toa Metru into a trap, but by this point, having wised after she tricked them by impersonating Whenua, they got her to reveal herself by exploiting the fact she didn't know about how much Nuju didn't like Matau.
- Last of Her Kind: According to Pouks, the other Krahka were victims of the Visorak.
- Multi-Armed and Dangerous: Her merged Toa Metru form.
- Power Copying: In additional to shapeshifting into her targets, she also gains their powers as well as their memories.
- Shapeshifter Default Form: She seems to prefer using Toa Metru Nokama's form slightly more than anyone else's, if only for interacting with others.
- Shapeshifter Mash Up: Again, the Toa Metru form.
- Shapeshifting: Form, powers, memories...she's still not quite there on mannerisms though.
- Talking Animal: Once she gains enough memories from the Toa Metru to fully understand how to talk. At first, all she could do was just use words she heard and rearrange them into sentences.
- Troll: She's occasionally turned into a copy of the very person she's having a conversation with for no real reason aside from her own amusement.
- Worthy Opponent: Eventually grows to see the Toa Metru this way.
NivawkA hawk-like Rahi specimen Makuta employed as a spy during his coup on Metru Nui
- Feathered Fiend: It's certainly very fiendish in appearance.
- Giant Flyer: Larger than a Toa. Its absorption makes Makuta into one.
- Kidnapping Bird of Prey: It's strong enough to carry a Matoran and possibly a Toa, and hunts this way.
- Killed Off for Real: Teridax absorbed the one he used like with Nidhiki and Krekka.
- Butt-Monkey: Keeps getting subdued and transported around the universe, simply for the entertainment of the guy relocating the poor sap. This ultimately results in the Ultimate Showdown of Ultimate Destiny with whoever the resident badass happens to be. All the while he demands to know how he hell he got there.
- Contest Winner Cameo: Designed by Justin Lamb, it later became suprisingly prominent in Adventures.
- Horse of a Different Color: His species were used as mounts by Keetongu's species as well as the Skakdi.
- Kaiju: He's forty feet tall.
- Madness Mantra: It's constant demands for an answer come off like this.
- Talking Animal: He can speak Matoran, though all he does is demand the answer of how to get home.
- Ultimate Showdown of Ultimate Destiny: Tahtorak kept being pit against other giant monsters, such as Zivon, Kardas, and the Kanohi Dragon. Can be seen as a Running Gag.
KeetonguVoiced by: Scott McNeil, Enrique Cervantes (Latin American Spanish) A legendary Rahi capable of curing many poisons. The Rahaga and Toa Hordika sought him out to fight the Visorak and reverse the Toas' mutations.
- Catch and Return: His Whirling Shields can absorb attacks, his armor can store the energies, and his Rhotuka Spinner can send it right back at 'em.
- Chest Blaster: His Rhotuka Spinner deploys from his chest.
- Curb-Stomp Battle: He did well enough on a purely strength-based level, but Makuta trashes him once he starts using his other powers.
- Cyber Cyclops: He looks like one, but his real eyes are hidden.
- Detect Evil: His "eye".
- Everything's Better with Spinning: His Whirling Shields, which he spins in order to catch attacks.
- Last of His Kind: By the Visorak horde.
- Luckily, My Shield Will Protect Me: Whirling Shields.
- Super Strength: Crushed Sidorak, himself stronger than a Toa, to death with his bare fists and later matched Makuta himself blow-for-blow in terms of physical strength. Unfortunately, Makuta is not Sidorak.
- Talking Animal: Though he doesn't speak Matoran.