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BZPower Bionicle Timeline
 Matoran Prehistory
- (BA#6: Maze of Shadows) Dominion of Karzahni (the original) and existence of Artahka Refuge.
- Coming of the Great Spirit.
- Foundation of Metru Nui.*
- Formation of the Brotherhood of Makuta.*
History of Metru Nui
- (BG: Rahi Beasts) Coming of the great Kanohi Dragon to Metru Nui.
- (BG: Rahi Beasts) Defeat of Kanohi Dragon by Lhikan and his Toa team.
- Lhikan and his Toa team settle in Metru Nui.
- (BG: Bionicle Encyclopedia) Dark Hunter War against Metru Nui. Toa Lhikan and Toa Nidhiki fight in it.
- The Brotherhood of Makuta turns/is revealed to be evil.*
- Roodaka and Sidorak are placed in charge of the Visorak.
- The Toa Hagah refuse to go along with the Brotherhood's treachery, attack and defeat one of the Makuta (Makuta; the same one encountered on Metru Nui and Mata Nui later).
- The Toa Hagah are defeated, mutated into Rahaga by Roodaka.
- (BG: Metru Nui: City of Legends) Kanoka invented by Ko-Matoran.*
- (BG: Metru Nui: City of Legends) Kralhi invented by Nuparu to enforce order in the city, but are soon retired because they are too powerful. They refuse to be shut down - some hide in the Archives, others leave Metru Nui. *
- (BG: Metru Nui: City of Legends) Vahki invented to replace the Kralhi.*
- (BG: Metru Nui: City of Legends) Chute system of travel invented.*
- (BA#5: Voyage of Fear) Many dangerous sea creatures suddenly come to Metru Nui. They are studied briefly and in secret by Mavrah and Onepu in Onu-Metru.
- (BA#5: Voyage of Fear) Sea creatures get out of hand, Dume orders them driven away, but they and Mavrah disappear just before the Vahki arrive to chase them off.
- Dume is replaced by Makuta, who brings his pet flying Rahi Nivawk to spy for him.
- Gradual disappearance of some of Lhikan's fellow Toa.
- The remaining Toa in Lhikan's group sent on missions to seal the tunnels to other caverns, from which they never return.
Morbuzahk Saga
- Arrival of the Morbuzakh and gradual disappearance of Matoran. Powerful vines spread throughout the city, driving the Matoran closer to the center of the city.
- The Dark Hunters Nidhiki and Krekka arrive in Metru Nui.
- (BA#8: Challenge of the Hordika) Toa Lhikan comes to suspect Turaga Dume of treachery, and decides to grant six Matoran Toa power. He originally plans on picking the six Matoran who know the locations of the Great Disks, but under Makuta’s influence decides upon Vakama, Nokama, Onewa, Whenua, Nuju, and Matau.
- (B2: Legends of Metru Nui) Lhikan steals the six Toa-stones from the Temple of the Great Spirit and infuses them with Toa energy before delivering them to the chosen Matoran.
- (B2: Legends of Metru Nui) Lhikan is defeated and captured by the Dark Hunters Nidhiki and Krekka while giving Vakama his Toa stone.
- (B2: Legends of Metru Nui, #16: Toa Metru!) The Matoran meet at the Temple of the Great Spirit and are transformed into Toa Metru. Though they do not know it, this transformation draws energy from the captured Lhikan and turns him into a Turaga. A recording left by Toa Lhikan tells them to secure the "heart of Metru Nui," which Vakama mistakenly takes to mean Lhikan.
- (B2: Legends of Metru Nui, BA#1: Mystery of Metru Nui) Vakama receives a vision which tells him that the six Great Kanoka Disks must be used to stop the Morbuzahk, and the names of the Matoran who know their locations. There is no time to tell Turaga Dume of their transformation, and the Vahki automatically designate these unknown beings as threats - possibly imposters of Toa. The Toa set out to find Lhikan and the Great Disks, unaware of their newly-granted mask powers. After finding the disks they expect to be accepted as true Toa.
- (BA#1: Mystery of Metru Nui) The six Matoran who know the locations of the Great Disks - Nuhrii, Vhisola, Orkahm, Ahkmou, Tehutti, and Ehrye - go missing after Ahkmou helps the Dark Hunters lure them into traps.*
- (BA#1: Mystery of Metru Nui, MCD: Toa Metru Nokama) Nokama learns that Vhisola knew that the Great Disks could be used to stop the Morbuzahk, confirming Vakama's vision. She rescues Vhisola from the roof of the Great Temple, where Nidhiki had chased her.
- (#16: Toa Metru!, BA#1: Mystery of Metru Nui) While searching for Nuhrii, Vakama is nearly killed by molten protodermis - Morbuzahk vines were able to tip a vat of it because Nidhiki had sabotaged the vat controls and caused them to move more slowly. Vakama learns that the Morbuzahk dislikes cold.
- (#16: Toa Metru!, BA#1: Mystery of Metru Nui, MCD: Toa Metru Vakama) Vakama rescues Nuhrii from a nearly collapsed building.
- (BA#1: Mystery of Metru Nui, MCD: Toa Metru Whenua) Whenua finds Tehutti deep in the Archives sublevels - a Rahkshi of heat vision had been set loose to chase him. Whenua releases a Muaka to fight the Rahkshi, and while both are distracted, Whenua and Tehutti escape.
- (BA#1: Mystery of Metru Nui) Impatient, Nidhiki and Krekka threaten Ahkmou, telling him to try harder to get the Great Disks.
- (BA#1: Mystery of Metru Nui, MCD: Toa Metru Nuju) Nuju rescues Ehrye, and fixes a spreading crack in a Knowledge Tower (which Nidhiki and Krekka caused).
- (BA#1: Mystery of Metru Nui, MCD: Toa Metru Matau) Matau rescues Orkahm from sector three, an area of Le-Metru devastated by the Morbuzahk.
- (BA#1: Mystery of Metru Nui, MCD: Toa Metru Onewa) Onewa "rescues" Ahkmou from the top of a statue... although Ahkmou was never in any danger. Ahkmou runs, knowing his life is in danger.
- (BA#1: Mystery of Metru Nui) Onewa catches Ahkmou at a chute station.
- (#16: Toa Metru!) Having found all six of the missing Matoran, the Toa meet at the Great Temple. Vakama suspects that one of the Matoran set the others up, and after discussing all the clues they had noticed, they realize it is most likely Ahkmou. But because all six of the Matoran are still needed, they agree to keep that suspicion quiet for the moment.
- Toa Metru begin a scavenger hunt for the Great Kanoka, with the help of the six Matoran.
- (#17: Disks of Danger) While the Toa Metru search for the Great Disks, the Morbuzahk continues to wreak havoc all over Metru Nui. Neither the Matoran nor the Vahki can stop it.
- (BA#2: Trial by Fire) In Ta-Metru, Nidhiki nearly sends Onewa and Vakama to their death. They are caught in a chute headed right for the flames of the Protodermis Reclamation Furnace. Vakama absorbs the flames of the furnace and releases the heat in a beam which blasts through the roof of the building.
- (#17: Disks of Danger, BA#2: Trial by Fire) Whenua and Nuju enter the wrong room while searching the Archives for the Onu-Metru Great Disk, and find themselves in the grip of a giant mutant Ussal Crab. They escape by chasing it off with a high-frequency sound generated by Whenua's drills.
- (BA#2: Trial by Fire) Nokama and Matau, searching for the Ga-Metru Great Disk, are nearly drowned when water is released into a the previously dry canal they were walking through. Nokama rescues Matau.
- (BA#2: Trial by Fire) Nokama gets the Great Disk from inside the mouth of a massive fish in the water under the Great Temple, but is chased by the fish and nearly eaten.
- (#17: Disks of Danger, BA#2: Trial by Fire) Onewa, Vakama, and the Matoran Ahkmou and Nuhrii search for the Ta-Metru Great Disk in the Fire Pits. Vakama and Nuhrii descend into one pit while the fires it houses had died down, and retrieve the Great Disk. But Morbuzahk vines grab them on their way out. Nuhrii uses a Kanoka with the power of reconstitute at random on the vines; the shock of transforming makes the vines let go. They escape, chased by a monstrous reconstituted vine, just in time before the pits fires erupt again.
- (BA#2: Trial by Fire) Nuju almost releases a two-headed Tarakava from its tank in the Archives by accident. Shortly after, he and Whenua find themselves trapped in a room with nothing in it... because the "room" itself is a shapeshifting Rahi! They escape after Nuju summons a blizzard, which the "room Rahi" dislikes. Whenua finally finds the Great Disk in a room stuffed with all sorts of artifacts.
- (#17: Disks of Danger, BA#2: Trial by Fire) Matau enters a force sphere to retrieve the Le-Metru Great Disk, only narrowly escaping with the disk before it implodes.
- (BA#2: Trial by Fire) Whenua and Nuju search for the Ko-Metru Great Disk. After various struggles with Vahki, Nuju finds the Ko-Metru Great Disk in an icicle on the side of a Knowledge Tower.
- (BA#2: Trial by Fire) Searching for the Po-Metru Great Disk, Vakama and Onewa encounter a rogue tunneler, a Rahi which reflexively becomes made of whatever they use against it. They defeat it by making it turn itself into glass, so it's too fragile to move without shattering.
- (BA#2: Trial by Fire) Onewa gets the Great Disk from the top of an unstable statue, narrowly avoiding being crushed by it.
- (#17: Disks of Danger, BA#2: Trial by Fire) With all of the Great disks found, the Toa meet up. Vhisola reveals how to defeat the Morbuzahk - the Toa Metru must find the King Root. Nokama realizes the King Root must be in the Great Furnace.
- (#18: Seeds of Doom, BA#2: Trial by Fire) On the way to the King Root, the Toa Metru encounter and escape from hundreds of Morbuzahk seeds. Ahkmou tries to run. Onewa realizes he was definitely the traitor, and confronts him about it.
- (BA#2: Trial by Fire) In the hallway leading to the Great Furnace, Nuju uses up most of his elemental power trying to defeat several vines blocking the way. Then the Toa and Matoran are nearly defeated when hundreds of thorns are shot at them. Nuhrii, Tehutti, Orkahm, Vhisola, Ahkmou, and Ehrye form a Matoran Nui, and this merged being helps the Toa escape into the main chamber. The Matoran then separate flee the building.
- (#18: Seeds of Doom, BA#2: Trial by Fire) The Toa enter the Great Furnace. They see the King Root, as tall as a skyscraper, filling the massive room. The King Root speaks telepathically to the Toa, revealing that it was commanded to drive the Matoran to the center of the city. It tries to steal Whenua's Great Disk, but fails.
- (#18: Seeds of Doom, BA#2: Trial by Fire) During the battle, the Toa Metru each use up almost all of their elemental energy (it would later take quite some time to recharge due to their inexperience as Toa), and trick the Morbuzahk to draw them in closer to it. They then launch the Great Disks, which form an energy bubble around the King Root, cutting it off from its vines, and killing it.
- (#18: Seeds of Doom, BA#2: Trial by Fire) The Toa Metru retrieve the Great Disks, and flee as the building collapses. The vines in the city disintegrate. The Toa have been victorious... but Nokama wonders who could have commanded the Morbuzahk, and whether that person would strike again.
The Great Shadow
- (BA#3: The Darkness Below) The thick protodermis wall that keeps the ocean out of the Archives cracks, and a leak sprouts in the Fikou Web, the maintenance tunnels of the Archives known for their confusing, weblike layout.
- (BA#3: The Darkness Below) On their way to the Coliseum to greet Turaga Dume, Nuparu tells the Toa of the leak.
- (BA#3: The Darkness Below) Whenua leads the Toa to search for the leak and plug it. They encounter Rahkshi with the powers of weather control and insect control on the way. They don't realize that the powerful shapeshifting Rahi Krahka is watching them from the shadows, learning their strengths, their weaknesses... and how to mimic them!
- (BA#3: The Darkness Below) Since they don't encounter any further danger, Toa Metru split up to search for the leak.
- (BA#3: The Darkness Below) Nokama encounters the orange insect control Rahkshi... or so she thinks (it's actually Krahka). It defeats her, leaving her unconscious.
- (BA#3: The Darkness Below) Krahka begins attacking each Toa Metru individually, disguised as a different fellow Toa. But each time she acts oddly, or uses too much power or the wrong powers, clueing the Toa Metru in (eventually) to the fact that things are not as they seem. Krahka is hoping to drive them out, since they are intruding into her realm.
- (BA#3: The Darkness Below) Realizing the Toa Metru aren't leaving, Krahka kidnaps Whenua and takes his place. Having learned a lot by now, she acts more realistically, and the Toa Metru are fooled. "Whenua" tells them about Krahka, and when he cannot convince them to leave, agrees to guide them to Krahka's lair.
- (BA#3: The Darkness Below) Each Toa disappears while they're passing through a strange area of darkness until only Nokama is left with the fake Whenua. Nokama confronts Krahka, who she now recognizes.
- (BA#3: The Darkness Below) Krahka leaves Nokama to fight three Rahkshi. Nokama manages to defeat them (without staffs or a mission given by Makuta, they are less of a challenge than they normally would be).
- (BA#3: The Darkness Below) Nokama and the others set out to rescue the real Whenua. Nuju scouts ahead and is captured.
- (BA#3: The Darkness Below) Vakama, Nokama, Matau, and Onewa get Krahka to come to them by making it look as if they are going to leave, and bring Vahki down to search the tunnels. She captures them, and takes them to the cave where Nuju and Whenua are. She threatens to destroy all of Metru Nui.
- (BA#3: The Darkness Below) Toa Metru battle Krahka. During the battle, they use up what little elemental energy they had left from the fight with the Morbuzahk. Krahka becomes a combination of all six Toa, blasting them with their own powers. She tires, and is confused by the Toa's logic. If she did as she threatened, she would be the absolute ruler of... nothing.
- (BA#3: The Darkness Below) Krahka combines the powers to make a proto cage (giving Vakama the clue that they could do this as well). The strain of holding together six different forms overwhelms Krahka, and she is left helpless. Vakama allows her to leave.
- (BA#3: The Darkness Below) Toa Metru seal the leak.
- (B2: Legends of Metru Nui) The Toa Metru present the Great Kanoka to Turaga Dume, but he orders them to be tested to see if they really are Toa. The Akilini field of the Coliseum batters them with waves of protodermic pillars and, battered and overwhelmed after using all of their elemental powers on the Morbuzakh and Krahka, they fail the test. Branded impostors, the Vahki and Dark Hunters chase the Toa (Vakama realizes Dume is a traitor when he sees the Dark Hunters with him). Vakama, Nokama and Matau escape in a chute while Nuju, Whenua, and Onewa are captured.
- Matoran continue to go missing even though the Morbuzahk has been defeated.
- Vakama, Nokama, and Matau leave their chute in Ga-Metru.
- (#19: Enemies of Metru Nui) A Vahki Bordakh uses its staff of loyalty on Nokama, who pushes Vakama off the side of a building in Le-Metru. He discovers a special power of his disk launcher; when worn on his back, it can be used to fly! He uses this to save himself, then sends two shrink Kanoka at the Vahki who were waiting below.
- (#19: Enemies of Metru Nui) Nokama tries to subdue Matau but he knocks her over the side of the building, grabs her foot, and resolves to keep her hanging there until the Vahki power wears off. But he drops her.
- (#19: Enemies of Metru Nui) Vakama catches Nokama, who is jolted back to herself again by the shock. They flee as more Vahki near. Matau enters a chute to draw the Vahki away from the others, but some Vahki Vorzahk ahead of him sabotage the chute. He is able to bring himself to a stop with his Toa tools, and the Vahki that were chasing him fly out of the broken part of the chute, caught unawares.
- Vakama, Nokama, and Matau flee to Le-Metru.
- (#19: Enemies of Metru Nui) Onewa, Nuju, and Whenua are being led to the Prison of the Dark Hunters, in Po-Metru. They quietly plan to run, but do not realize that Whenua has been hit with the power of the Vahki Rorzahk, turning him into an unknowing spy.
- (#19: Enemies of Metru Nui) The three run for hours, circling around, narrowly avoiding capture many times. But they eventually find themselves in a dead end... and the door slams on their prison cell! The Vahki had been aware of their position the whole time, and had led them right to a trap in the Prison of the Dark Hunters.
- (#19: Enemies of Metru Nui) Nokama, Vakama, and Nuju stow aboard a cargo airship bound out of Le-Metru figuring the Vahki will be watching the streets and chutes, not the airships. On the journey, they realize the Morbuzahk was merely a cover for something else, which Lhikan had suspected, but never had time to explain before the Dark Hunters captured him. They never notice the Vahki Nuurakh that had also stowed away on the ship.
- (#20: Struggle in the Sky) The Nuurakh ambush Vakama, Nokama and Matau aboard the airship. The Vahki are defeated. The Dark Hunters are nearby, and fly up to the airship, break in, and fight the Toa Metru. Krekka is teleported out of the ship with a Kanoka, and Nidhiki pinned down under a broken support beam. Using their abilities of flight, Matau and Vakama carry Nokama out of the airship, which was over Ta-Metru at the time.
- (#20: Struggle in the Sky) Meanwhile, "Dume" is keeping tabs on the whole event; his bird Nivawk is spying on the Toa Metru - and the Dark Hunters - for him.
- (#21: Dreams of Darkness) Vakama recieves a vision of a monstrous being fighting him (Makuta, though he doesn't know that at the time), and a massive hand crushing him. Then the vision changes to a scene of himself wrapped in webbing, where Nidhiki taunts him. Lhikan appears and warns him to listen to the message of the visions. Then Turaga Dume shows him a vision of himself and the others being mutated in the place with the webs. He snaps out of the vision in Ta-Metru.
- (#21: Dreams of Darkness) Tahtorak rises to the surface near Matau, Nokama, and Vakama, awakened before by the Toa's fight with Krahka. He demands to know the answer to a mysterious question, and he threatens to destroy Ta-Metru if it is not answered. The Toa Metru fight Tahtorak, eventually using weaken Kanoka to make the ground beneath him crumble and sending him back down into the Archives. Several Vahki Nuurakh, responding to the threat of Tahtorak and the presence of the Toa, were also destroyed in the fight.
- The three Toa take the chutes to Ko-Metru, fleeing more approaching Nuurakh.
- (B2: Legends of Metru Nui) The Dark Hunters force Kongu, a chute-managing Matoran, to reverse the flow of the chutes.
- (B2: Legends of Metru Nui) Three Toa escape the reversed chute, only to find themselves hanging from a chute support by Nokama's Toa tool. Vakama receives a vision of Toa Lhikan's spirit star at that moment. They swing onto a support tower. Matau falls, but is able to glide to safety with the discovery that his Toa tools can double as wings.
- (B2: Legends of Metru Nui) Toa Lhikan's spirit star appears in the sky headed towards Po-Metru, and Vakama decides they should follow it. He also begins merging the six Great disks together, to form the Disk of Time. The three Toa stow aboard a Vahki transport bound to Po-Metru.
- (B2: Legends of Metru Nui) In their cell, Nuju, Onewa, and Whenua meet a mysterious Turaga, who begins training them to discover their mask powers.
- (B2: Legends of Metru Nui) On the way to Po-Metru, the Toa Metru notice many strange spherical metal storage containers. Vakama has a vision of a Ga-Matoran inside, her eyes glowing bright red. Once the vision ends, he opens the spheres to find that they're empty.
- (B2: Legends of Metru Nui) At an Assembler's Village in Po-Metru, the Toa Metru encounter the Dark Hunters. But a herd of the powerful Rahi Kikanalo sweep through, and the Dark Hunters flee. Nokama discovers her mask power of translation, and befriends the Kikanalo, who, it turns out, are actually quite intelligent.
- (B2: Legends of Metru Nui) Onewa and Nuju discover their masks powers while Onewa and Whenua were fighting over the seeming pointlessness of the exercises the mysterious Turaga was having them do. Onewa commands Whenua to sit down with his mask of Mind Control, while Nuju tears down a wall and makes the rubble fly in between the two with his mask of Telekinesis. The Toa and Turaga escape through the hole.
- (B2: Legends of Metru Nui) Vahki Zadakh fight Vakama, Nokama, Matau, and their Kikanalo steeds. Nidhiki and Krekka show up to join the fight. Matau discovers his mask power - shapeshifting - and uses it to confuse the Dark Hunters and escape. Meanwhile the Kikanalo defeat the rest of the Vahki.
- (B2: Legends of Metru Nui) All of the Matoran of Metru Nui are summoned to the Coliseum by Turaga Dume.
- (B2: Legends of Metru Nui, BA#4: Legends of Metru Nui) Whenua, Nuju, Onewa, and the Turaga take a shortcut through the underground tunnels in the mouth of a Troller (controlled by Onewa's mask power). Whenua discovers his mask power - Night Vision - and leads the way through the dark tunnels until they meet up with Matau, Vakama, and Nokama. All of the Toa have now discovered their mask powers except for Vakama.
- (B2: Legends of Metru Nui) The mysterious Turaga reveals himself to be Lhikan, and asks Vakama if the Toa Metru had secured the heart of Metru Nui. Vakama is confused by the question because he thought Lhikan was the heart of Metru Nui. Lhikan sadly explains that the Matoran are.
- (B2: Legends of Metru Nui) The Toa find a pod containing the real Turaga Dume, who is cast into an eternal sleep, confirming Lhikan's suspicions that the Dume that is in charge is an imposter. Vahki approach rapidly and there is no time to carry Turaga Dume to safety, so they leave him there for now.
- (B2: Legends of Metru Nui, BA#4: Legends of Metru Nui) The Toa Metru find a Vahki transport, but are attacked by Lohrak. Vakama gambles that enough of their elemental power has returned by now, and they all use those powers to defeat the Lohrak. They use the Vahki transport to escape the underground tunnels. They race towards the Coliseum to confront the false Turaga Dume.
- (B2: Legends of Metru Nui) As the Vahki transport races through the empty city, the Toa realize that the ancient legend of the Great Shadow is coming true!
- (B2: Legends of Metru Nui) The Toa Metru and Turaga Lhikan confront Turaga Dume, who reveals himself to be Makuta. Whenua discovers that all of the Matoran have been cast into comas inside hundreds of the spherical pods. The Toa Metru were too late.
- (B2: Legends of Metru Nui) As the Toa Metru escape, Makuta casts the Great Shadow, an eclipse which puts Metru Nui in darkness and an earthquake that shatters the city as the Great Spirit Mata Nui falls into slumber. The Toa Metru take six of the Matoran pods, and attach them to a Vahki transport.
- (B2: Legends of Metru Nui) The Toa Metru flee, pursued by Vahki and the Dark Hunters. The Dark Hunters land on the transport but fall off when Krekka, his mind controlled by Onewa, attacks Nidhiki. Makuta pulls the two, along with Nivawk, into his own being to add to his power. Makuta also draws power directly from the Coliseum's power supply.
- (B2: Legends of Metru Nui) The Toa Metru sail towards the Great Barrier on the edge of the Silver Sea in the Vahki transport, which is able to float because of the largely hollow Matoran pods strapped to its sides. Vakama forges the Vahi, the Mask of Time, from the Kanoka made when all of the Great Disks were combined. He also receives a vision which tells him to head for a crack in the Great Barrier that surrounds the Silver Sea - the way up to the island above the city's underground cavern.
- (B2: Legends of Metru Nui) Makuta, in the form of a titan with wings, confronts the Toa Metru, who battle him. The Vahki transport crashes on pillars of solid protodermis which Makuta makes rise out of the sea. Vakama is sent up to the rocky outcropping where Makuta is by Nuju's telekinesis.
- (B2: Legends of Metru Nui) Vakama pulls out the Mask of Time. Makuta tempts him, asking him to join him and his brothers. Vakama refuses.
- (B2: Legends of Metru Nui) Makuta uses a power which creates an energy "hand." The hand flies out, and whatever it grabs is drawn towards Makuta. Vakama tries to use the Vahi to slow time down around Makuta as he attacks with the hand, but loses control of the powerful mask and also becomes caught in slow motion. Turaga Lhikan climbs up to the outcropping. At the last second, he jumps in front of Vakama, taking the brunt of the attack. His Noble mask of shielding is too weak to withstand the power of the attack, and he is fatally wounded. The Vahi flies off Vakama's face to a distant corner of the outcropping.
- (B2: Legends of Metru Nui) While Makuta goes to pick up the Vahi, Vakama witnesses Turaga Lhikan die.
- (B2: Legends of Metru Nui) Makuta picks up the Vahi, but Vakama fires a Kanoka at it and knocks it out of his hands into the Silver Sea.
- (B2: Legends of Metru Nui) Vakama discovers his mask power, invisibility. He uses it to trick Makuta into drawing a heavy rock towards himself. Unable to release the power of the hand, Makuta is practically crushed.
- (B2: Legends of Metru Nui) The six Toa Metru trap Makuta in a cage of solid protodermis by combining their powers.
- (B2: Legends of Metru Nui) The Toa Metru journey onwards to the mysterious island above. They name their Vahki transport ship the Lhikan.
- (BA#5: Voyage of Fear) On the way, they take a wrong turn and are nearly melted by a Rahi that emits intense heat.
- (BA#5: Voyage of Fear) After the Toa Metru fight off some Vahki that had chased them from Metru Nui, Nokama scouts ahead and discovers a trap set for them. She heads back to warn the others.
- (BA#5: Voyage of Fear) The Lhikan is brought to a stop, tangled in what appears to be seaweed. Nuju, trying to remove the Lhikan, realizes it's actually alive as it knocks off his mask. A powerful current suddenly pulls the Lhikan away.
- (BA#5: Voyage of Fear) Nokama, who had anchored herself to the cave wall, sees the Lhikan go by her, but soon after sees and rescues Nuju, getting his mask back to him.
- (BA#5: Voyage of Fear) A whirlpool nearly destroys the Lhikan. After the whirlpool disappears, Nokama and Nuju catch up to the others.
- (BA#5: Voyage of Fear) Toa Metru encounter many huge, dangerous Rahi in an enormous cavern with a lake in it. Kralhi capture the Toa.
- (BA#5: Voyage of Fear) Mavrah speaks with the Toa, using a Rahi that can detect mask power usage to make sure they don't attack him. Whenua reveals that these are the Rahi which mysteriously disappeared from Metru Nui years before, along with Mavrah. The Kralhi that long ago went missing are now working for him. Vakama escapes, invisible.
- (BA#5: Voyage of Fear) The Toa Metru battle Mavrah's Rahi, Kralhi, and a group of Vahki that had followed them all the way from Metru Nui.
- (BA#5: Voyage of Fear) Whenua and Onewa convince Mavrah to stop this battle, but witness him get swept away by a massive wave from the Rahi. The Toa Metru escape, but the pod containing the Matoran Ahkmou is lost in the water.
- (BA#5: Voyage of Fear) Toa Metru arrive on Mata Nui, sealing the tunnel behind them.
- (BA#6: Maze of Shadows) On Mata Nui the five Matoran capsules are left in safety on the beach next to what would someday be Ga-Koro, and the Toa Metru place a portion of their power into six stones. These Toa Stones of Mata Nui are hidden on the island, and the Toa find good locations for villages the planned to build.
- (BA#6: Maze of Shadows) The Toa Metru begin their way back to Metru Nui to rescue the other Matoran, this time traveling through a tunnel which they saw a Nui-Jaga run out of. On the way they encounter hordes of mutated Rahi, all running from underground. They also encounter a small pool of energized protodermis, a powerful mutagenic type of protodermis. They discover what it does to things that do not have a destiny to be mutated - it destroys them!
- (BA#6: Maze of Shadows) The Toa Metru encounter the Rahi Nui. Before they defeat it, it stings Nokama with a deadly poison. The Toa decide to keep going, hoping to find a cure in Metru Nui.
- (BA#6: Maze of Shadows) Matau is fused to a stone wall by the power of a mutant Rahi. Onewa frees him.
- (BA#6: Maze of Shadows) The Toa Metru encounter Karzahni, a living mosslike plant who was the prototype for the Morbuzahk. He offers to cure Nokama in return for some energized protodermis. So the Toa search on through the tunnels and chambers, finding a pool of the powerful substance, as well as a vial that seems to be able to hold EP without being destroyed.
- (BA#6: Maze of Shadows) Before the Toa Metru could get some of the energized protodermis, an entity which appeared to be made entirely out of energized protodermis rises up from the pool of it and attacks them. The Toa eventually defeat it, and take some of the protodermis.
- (BA#6: Maze of Shadows) Karzahni heals Nokama and drinks the energized protodermis, hoping to be changed into something far more powerful. But it is not his destiny, and he is destroyed.
- The Visorak hordes invade Metru Nui.*
- Six canisters fall from the sky, landing in the sea around Mata Nui.*
The Great Rescue (Spoilers)
- (BA#7: Web of the Visorak) Back on the shores of the protodermis sea the Toa Metru discover a cave used as Makuta's experimentation area, and they search it for a way to get back to Metru Nui. Vakama finds parts of Vahki transports and is attacked by a powerful creature made of fire, which he defeats by absorbing all of the heat in the chamber. The Toa put the Vahki transport together, and, with dead branches from Karzahni, make a ship. They name it the Lhikan II.
- (#22: Monsters in the Dark!, BA#7: Web of the Visorak) The Lhikan II crashes onto Metru Nui's beach in Le-Metru during a heavy storm. Vakama impatiently leads the other Toa towards the Coliseum. They notice that the Archives exhibits were shattered by the earthquake, and released Rahi now roam the city.
- (BA#7: Web of the Visorak) A small lizard Rahi sees the Toa. It later gets trapped in a Visorak web and in a simplified language the Visorak understand, it bargains for its life with what it knows. The Oohnorak carries the Rahi to Roodaka, who is then told of the Toa Metru's arrival.
- (BA#7: Web of the Visorak) Matau and Whenua encounter the Vahki, who have become deadly due to the power surge Makuta caused.
- (BA#7: Web of the Visorak) The Toa enter the Moto-Hub. Vahki are closing in on them, and Matau stays behind to distract the Vahki with his shapeshifting powers. The Vahki are not fooled, though, and are about to kill him when a Rhotuka spinner hits them. The Visorak had been watching, and since Roodaka wanted the Toa captured alive, they had decided to save the Toa from the Vahki. Matau doesn't know what sent the spinner.
- (BA#7: Web of the Visorak) A creature made of sound attacks Matau, as well as the other Toa Metru when they come to help. Matau defeats it by creating a vacuum of air inside a chamber the Toa erected, similar to how Vakama defeated the fire creature.
- (BA#7: Web of the Visorak) The Toa Metru start to leave the Moto-Hub but see thousands of eyes glowing in the darkness. Quickly going back in, Whenua realizes the city has been attacked by beasts from an old legend - Visorak. Vakama snaps at him for not remembering earlier, and gets into a fight with Onewa over it. Toa decide to go through the Archives to the Coliseum.
- (BA#7: Web of the Visorak) The Toa Metru realize that all of the Rahi which came to Metru Nui in the past were fleeing from Visorak.
- (BA#7: Web of the Visorak) Toa encounter and fight a Lohrak mutated by the Visorak venom. It has destructive sonic abilities, and it was what created the sonic creature encountered earlier. Nokama tries to talk to it using her mask power, but its response blasts her out of the building through the wall.
- (BA#7: Web of the Visorak) Vahki join the fight from outside. Three Suukorak chase Onewa, who had rescued the unconscious Nokama.
- (BA#7: Web of the Visorak) The Lohrak is driven away. Matau defeats the Vahki.
- (BA#7: Web of the Visorak) Nokama wakes up. She and Onewa fight the Suukorak and almost lose, but the creatures flee when the other Toa show up.
- (#22: Monsters in the Dark!) The Toa Metru arrive just outside the Coliseum, and are cornered by Keelerak and paralyzed.
- (BA#7: Web of the Visorak) Roodaka convinces Sidorak to string up the Toa at a high altitude and mutate them rather than just killing them right away, to make their deaths more "spectacular."
- (#22: Monsters in the Dark!, BA#7: Web of the Visorak) Toa Metru wake up, wrapped in barbed webbing, hanging far above the city from the side of the Coliseum. They feel themselves being mutated, and Vakama despairs as the web holding him up snaps, sending him plunging to certain death.
- (#22: Monsters in the Dark!, BA#7: Web of the Visorak) The Rahaga rescue the Toa, catching them as they fall from their cocoons. But the Toa are no longer Toa Metru... they have been mutated by Visorak venom in the barbed webbing, into half Toa, half Rahi beast: the Toa Hordika! They can no longer use their Kanohi, which have become merged with their faces, and their elemental powers are focused now through Rhotuka spinners. The six Rahaga (Norik, Gaaki, Pouks, Bomonga, Kualus, and Iruini) introduce themselves.
- (BA#7: Web of the Visorak) The Rahaga reveal the legend of Keetongu, who can supposedly cure the Toa Hordika. The problem is that nobody even knows for sure if he exists, or where he is.
- (#23: Vengeance of the Visorak) The Rahaga try to help the Toa Hordika deal with their mutation. Vakama, giving in to his rage, foolishly tries to take on a group of Roporak.
- (BA#8: Challenge of the Hordika) Krahka sneaks into the Coliseum to challenge Roodaka to a fight. Roodaka ends up winning the fight, and forces Krahka to work for her.
- (#23: Vengeance of the Visorak) Nokama begins to actually like her mutation, and accidentally alerts the Visorak to their position. Gaaki is hit by a Visorak Rhotuka spinner. Nokama then accidentally summons a powerful lightning storm from the sky with her spinner.
- (BA#8: Challenge of the Hordika) Kualus reveals to Nuju that he can speak the language of the flying Rahi.
- (#23: Vengeance of the Visorak, BA#8: Challenge of the Hordika) Rahaga Iruini reveals to Matau that he was once a Toa as well.
- (BA#8: Challenge of the Hordika) The Toa Hordika begin searching for components to make airships, hoping to build a fleet to carry the Matoran to safety.
- (BA#8: Challenge of the Hordika) Vakama finds a Toa disk with Nuhrii's mask on it instead of his own, and notices that his own Toa disk had something else on it, which was scratched out and replaced with his own mask.
- (BA#8: Challenge of the Hordika) Krahka uncovers writing in the Great Temple from a Ko-Metru scholar who had predicted the names of the Matoran who had been destined to become Toa Metru (the Ga-Matoran had covered it up afterwords, preferring Mata Nui's will not be revealed that way). Krahka sneaks out while Nokama fights the Gate Guardian.
- (BA#8: Challenge of the Hordika) Nokama, while retrieving the Great Masks from the Great Temple to take to Mata Nui, sees the names; they are the names of the six Matoran who had known the locations of the Great Disks, not the six Toa Metru!
- (BA#8: Challenge of the Hordika) Iruini reveals to Matau that Roodaka mutated the Rahaga, just before many Visorak invade the building they're in.
- (BA#8: Challenge of the Hordika) Onewa discovers Makuta's hidden lair in Po-Metru. He finds a tablet, planted by Krahka, containing a terrible secret.
- (BA#8: Challenge of the Hordika) Vakama breaks into Toa Lhikan's chambers and finds a journal which reveals that Lhikan originally planned to give the Toa stones to the Matoran who knew the locations of the Great Disks, then mysteriously changed his mind.
- (BA#8: Challenge of the Hordika) A Kahgarak spinner sends Whenua and Bomonga into the dimension of darkness. They follow another Kahgarak in that realm, hoping to escape.
- (BA#8: Challenge of the Hordika) Pouks catches Krahka near the Po-Metru lair of Makuta. He and Onewa convince her to help them after Pouks reveals that the Visorak, led by Roodaka, had defeated the rest of Krahka's kind. She admits that she planted the evidence about the Toa's destiny, but that the evidence itself is real. A Visorak Roporak sent to spy on Krahka overhears her agree to betray Roodaka.
- (BA#8: Challenge of the Hordika) Matau is fooled by an Oohnorak into letting the Visorak into the hangar in Le-Metru. Meanwhile the other Toa Hordika see the Visorak heading towards Le-Metru and follow, assuming that Matau and Iruini are in trouble.
- (BA#8: Challenge of the Hordika) Krahka summons Tahtorak. She gets him to obey her after telling him that the Visorak have the answer to his question, but want to hide it from him. Krahka, Onewa, and Pouks ride Tahtorak towards Le-Metru, rescuing Nuju and Kualus from some Visorak on the way.
- (BA#8: Challenge of the Hordika) Whenua and Bomonga escape from the realm of darkness by following a Kahgarak out of it, and they appear right next to Sidorak in the midst of the battle in Le-Metru.
- (BA#8: Challenge of the Hordika) Tahtorak, Krahka, and the other Toa Hordika and Rahaga arrive.
- (BA#8: Challenge of the Hordika) Zivon is summoned from its dimension of darkness - and Whenua and Bomonga, trapped by webbing, are to be its first meal!
- (BA#8: Challenge of the Hordika) Tahtorak and Krahka fight the Zivon. The Hordika trap the Visorak in their constructed tower while Sidorak flees. As the rest of the Visorak are defeated, a Kahgarak tries hits Tahtorak with its spinner, but Krahka knocks Zivon into Tahtorak, and all three disappear into the realm of darkness. Onewa kills the Kahgarak in anger.
- (BA#8: Challenge of the Hordika) The battle is won. The Visorak trapped inside the Tower turn on each other. The few survivors are released and chased away. The Toa Hordika claim the tower as their own and Norik shows them how to seal it with elemental power, which will stop any attempts to break in.
- (BA#8: Challenge of the Hordika) Onewa reveals the contents of the tablet from Makuta's lair. Makuta had planted the idea in Lhikan's mind to make them Toa instead of those who were destined for the task!
- (#23: Vengeance of the Visorak) An Oohnorak leads Nuju into a trap by imitating Ehrye's voice. Nuju creates an ice dome around himself and Kualus, and they escape into the Archives below... only to be confronted by a powerful Kahgarak!
- (#24: Shadow Play) Roodaka plots to betray Sidorak, recalling a rite of passage she took once, in which she abandoned a companion to die in order to more easily pass the test. She expects one of the Toa Hordika to betray his or her companions in a similar manner.
- (#24: Shadow Play) Rahaga Bomonga tells Whenua that the Rahaga are keeping Rahi they rescue hidden in the Archives; the place the Rahi escaped from is the last place the Visorak would expect to find them. They meet up with Nuju and Kualus, who are facing the Kahgarak.
- (#24: Shadow Play) The Kahgarak's spinner is reflected back at it with a mirror of ice from Nuju, sending the beast into a realm of darkness.
- (#24: Shadow Play) Safe for the moment, Bomonga tells Nuju and Whenua that he was one of the first to see the Visorak and survive to tell the tale. He almost reveals who's behind the Visorak, besides Sidorak and Roodaka, but Visorak break into the chamber they were hiding in. As they try to fight, Whenua accidentally bring the roof down on them all!
- (OE#11: Toa Hordika and The Mask Of Light: Vakama) Vakama encounters Norik and Gaaki, who are cornered by three Visorak.
- (OE#11: Toa Hordika and The Mask Of Light: Vakama) Vakama defeats the Visorak. The Rahaga tell him of the Mask of Light, and that the Visorak are trying to get it. Toa Hordika must find six Makoki stones the Rahaga have hidden to find the Avhokii before the Visorak do; the Mask of Light is a powerful weapon against Makuta, and the Visorak want to make sure it's never used.
- (OE#11: Toa Hordika and The Mask Of Light: Vakama) Vakama finds the Ta-Metru Makoki stone, but the metal support beam he is standing on is melted by a lava eel. He falls towards the molten protodermis below.
- The Toa Hordika free the Matoran and are cured, taking the Matoran to the island above.
- Kanohi Vahi, the mask of time, is retrieved.
- Makuta is freed from his protodermis prison.
The Dark Time
- (B2: Legends of Metru Nui) The Toa Metru sacrifice their power to awaken the Matoran, and they become Turaga. They name the island Mata Nui, after the Great Spirit.
- Makuta arrives on Mata Nui and uses Kraata to infect Rahi.
- The effect of the spheres causes the Matoran to gradually lose their power and memory.
- (Tales of the Tohunga) The Turaga are captured by Rahi.
- (Tales of the Tohunga) Takua leaves Ta-Koro and rescues the Turaga.
- (Tales of the Tohunga) Takua finds Toa Stones and summons six canisters to Mata Nui.
- (Tales of the Tohunga) Blast from Toa stones throws Takua to Ta-Wahi beach, knocking him unconscious for a while, and giving him amnesia.
Coming of the Toa
- (#1: The Coming of the Toa, BC#1: Tale of the Toa) The six canisters arrive at Mata Nui's beach, and the Toa emerge (Tahu, Gali, Onua, Kopaka, Pohatu and Lewa). They each meet their Turaga, and learn that they must each collect six Kanohi masks.
- (#1: The Coming of the Toa, BC#1: Tale of the Toa) Kopaka finds his first Kanohi, after meeting Pohatu, who Kopaka reluctantly allows to tag along. Kopaka notices the other Toa in the distance.
- (BC#1: Tale of the Toa) Kopaka and Pohatu defeat a Kane-Ra together on their way to the other Toa.
- (BC#1: Tale of the Toa) The Toa meet in Ko-Wahi, and decide after heated debate to split up rather than work together.
- (BC#1: Tale of the Toa, BC#1: Tale of the Toa) Toa begin their search for the Kanohi masks.
- (Mata Nui Online Game) Ga-Koro attacked by a Tarakava, and villagers trapped in a hut, which is sunk. One of them, Maku, escapes and asks Takua for help.
- (Mata Nui Online Game) Takua saves the Ga-Matoran, and Gali defeats the Tarakava.
- (Mata Nui Online Game) Takua saves Po-Koro from the effects of infected Comet Koli balls with the help of Toa Pohatu. Turaga Onewa rewards him with a special pickaxe.
- (BC#1: Tale of the Toa) Tahu discovers infected Kanohi on a Kofo Jaga while going for a mask in Onu-Wahi, though he does not understand at the time what it means.
- (Mata Nui Online Game) In Onu-Koro, Takua reopens the pathway to the Lightstone mines, and finds a mysterious sundial deep underground in the Great Mine. He learns of an impenetrable layer of material beneath the mines, which the sundial rests on.
- (#2: Trapped... by the Rahi!) Lewa is almost drowned by plants, which Makuta controls, and then his mask is knocked off by Nui-Rama and he is sent falling from a great height. Gali collects a mask, but is trapped by a number of Rahi in the process.
- (Mata Nui Online Game) Le-Koro attacked by a Nui-Rama swarm. Turaga Matau and some villagers trapped in Nui-Rama hive.
- (#3: Triumph of the Toa) Onua rescues Lewa from a Muaka after a vine stops his fall. Tahu shows up to help Gali, but Gali is knocked unconscious. She dreams of the Toa Kaita, which are a mystery to even the wise Turaga.
- However, Lewa is captured and given an infected Kanohi.
- (Mata Nui Online Game) Takua speaks with Nixie, the Astrologer, about the sundial; she gives him a gnomon, and he is granted the position of Chronicler by Turaga Nokama.
- (Mata Nui Online Game) Takua uses the gnomon and a lightstone to unlock the sundial, which is really the doorway to a passage to the Mangaia, Makuta's lair. The rest of the way is blocked, however.
- (Mata Nui Online Game) Causeway to Le-Koro finished by Onu-Matoran. Takua proceeds through it.
- (Mata Nui Online Game) Takua and Kongu ride Kewa to hive, meet infected Lewa. Onua shows up and frees Lewa. They escape with the Kewa and a mind-controlled Nui-Kopen.
- (BC#1: Tale of the Toa) Kopaka's attempt to get a mask from an island in a Lava Lagoon turns deadly. He is briefly knocked unconscious and recieves an unclear vision about many things, including Toa Kaita. Lewa saves his life.
- (#3: Triumph of the Toa, BC#1: Tale of the Toa) Onua calls a meeting, and the Toa decide they should work together after all.
- (#3: Triumph of the Toa) The meeting between the Toa is broken up by a lava flow sent by Makuta. Lewa and Onua work together to stop it.
- (#3: Triumph of the Toa) The six Toa win a battle against many Rahi, and forces of nature which Makuta unleashes against them.
- (BC#1: Tale of the Toa) The Toa realize that the Rahi can be freed from Makuta's control by removing the infected Kanohi.
- (BC#1: Tale of the Toa) The Toa each collect all six masks.
- Toa collect all six Makoki stones, which will be used to unlock the way to the Mangaia.*
- (Mata Nui Online Game) Takua gathers the Chronicler's company, and meets the Toa at Kini Nui. They agree that he and his company must guard the Temple so that Rahi cannot trap the Toa on their return. Gali tells him she will send him visions of what the Toa are doing.
- (BC#1: Tale of the Toa, Mata Nui Online Game) The Toa receive their Golden Kanohi at Kini Nui, and the path to Makuta's lair, the Mangaia, is revealed.
- (BC#1: Tale of the Toa) The Toa encounter the Manas. Gali and Kopaka agree based on their visions that they must combine to form the Toa Kaita, and they do this.
- (Mata Nui Online Game) Rahi attack Kini-Nui in droves.
- (Mata Nui Online Game) Kongu, the Onu-Matoran Ussalry, and the Ta-Koronan Guard show up to help fight the Rahi.
- (Mata Nui Online Game) Toa Kaita destroy special towers, weakening the Manas.
- (BC#1: Tale of the Toa) Then the Manas are trapped by lava, and frozen solid, and their infected Kanohi are removed. The Toa Kaita separate into the Toa.
- (Mata Nui Online Game) Gali tells Takua that she can't send him any visions past this point; he must find the Toa.
- (Mata Nui Online Game) Rahi of Makuta defeated, the Chronicler sets off for Onu-Koro.*
- (BC#1: Tale of the Toa) The Toa face the Shadow Toa, and eventually defeat them by each facing the counterpart for a Toa other than themselves.
- (Mata Nui Online Game) Takua unlocks the passageway to the Mangaia, and follows it. He witnesses the Toa face Makuta.
- (Mata Nui Online Game) Makuta first appears as a mere Matoran, and debates philosophically with the Toa.
- (Mata Nui Online Game) Then Makuta changes form into a swirling vortex of pieces and shadowy tentacles, attacking the Toa. They counter by blasting him with their elemental power.
- (Mata Nui Online Game) Makuta appears to be defeated, though his parting words threaten that he cannot be destroyed, for he is nothing.
- (Mata Nui Online Game) Toa teleported up to Kini Nui.
- (Mata Nui Online Game) Takua witnesses the awakening of the Bohrok (which Makuta caused by activating a special beacon). Trapped in a Bohrok hive, he escapes to the surface using the special pickaxe Onewa had given him; it unlocks a mysterious bubble which flies Takua to the surface. Vakama speaks with him about what he witnessed.
The Bohrok War
- (#4: The Bohrok Awake!, BC#2: Beware the Bohrok) Having just arrived above the surface after defeating Makuta, the Toa are surprised to find the opposite of peace. They learn from a fleeing Ta-Matoran that the Bohrok have attacked.
- (#4: The Bohrok Awake!, BC#2: Beware the Bohrok) The Toa race to Ta-Koro, to find the Bohrok attacking. They fight them off, capturing one.
- (#4: The Bohrok Awake!, BC#2: Beware the Bohrok) Turaga Vakama explains the legend of the Bohrok.
- (#4: The Bohrok Awake!, BC#2: Beware the Bohrok) The Toa return to each of their villages to capture Krana (Gali reluctantly agrees that in this case they should split up).
- (OE#1: Siege of Po-Koro) Po-Wahi is attacked by Tahnok.
- (OE#1: Siege of Po-Koro) Hafu knocks down his own statues to block the entrance to the village.
- (OE#2: The Hero is Saved!) Pohatu arrives just in time to save Hafu from the Bohrok.
- (BC#2: Beware the Bohrok) Pahrak attack Po-Koro, then Levhak attack as well. Pohatu manages to collect a few Krana.
- Po-Koro is evacuated.
- (BC#2: Beware the Bohrok) Onu-Koro is attacked by Nuvhok.
- (OE#3: Engineering a Solution) Onu-Koro is attacked by Gahlok as the Matoran are evacuating. Taipu, Onepu, and Nuparu get separated from the others and trapped. Using parts from disabled Gahlok, Nuparu invents the Boxor, and they use it to escape and fight the Gahlok.
- (#4: The Bohrok Awake!, BC#2: Beware the Bohrok) As Lewa reaches Le-Koro he discovers it has been taken over by the Bohrok; all the Matoran of the village, and Turaga Matau, are under the control of Krana.
- (BC#2: Beware the Bohrok) The Le-Matoran jump on Lewa, who dares not fight his own villagers. A Krana is placed on his face.
- (#5: To Trap a Tahnok) Tahu is briefly controlled by a Krana, but escapes.
- (#5: To Trap a Tahnok) Gali, Onua, Kopaka, and Pohatu work together to trap a swarm of Tahnok in a flood.
- (#5: To Trap a Tahnok) Tahu gives a motivational speech to the Ta-Matoran.
- (#5: To Trap a Tahnok) Gali dives in to collect Krana from the Tahnok, but they are already boiling the water! She narrowly escapes.
- (#6: Into the Nest) Onua goes searching for Lewa.
- (#5: To Trap a Tahnok) Kopaka chases a Tahnok Va to a huge chasm leading down to a Bohrok nest inside the island.
- (#6: Into the Nest, BC#2: Beware the Bohrok) Kopaka shows Tahu the tunnel to the nest.
- (#6: Into the Nest) Onua finds Lewa, and convinces him to remove the Krana by his own will. Onu-Matoran that came with him use Boxors to stop a Lehvak swarm that was charging the Toa.
- (OE#4: Saving Le-Koro) Takua, Nuparu, meet with Kongu and Tamaru, the only two Le-Matoran that escaped control of Krana, plan an attack with Boxors against the Bohrok.
- (OE#4: Saving Le-Koro) Kongu and Tamaru lure the Bohrok and the infected villagers to a clearing where Boxors trap them, freeing the villagers and defeating the Bohrok.
- (#6: Into the Nest) Pohatu and Gali are chased by the Tahnok, but defeat them. The Toa now have all the Krana they need.
- (#6: Into the Nest, BC#2: Beware the Bohrok) Toa meet, decide to go into the nest. Lewa realizes that Makuta released the Bohrok.
- Takua and Jala head for Ga-Koro.
- (#6: Into the Nest, BC#2: Beware the Bohrok) Toa encounter a strange impenetrable wall. Tahu explores an opening, but gets trapped in the Bohrok nest itself. Shortly after, lava rushes at the other Toa.
- (#7: What Lurks Below..., BC#2: Beware the Bohrok) Kopaka temporarily stops the lava with ice, and Lewa realizes that the strange wall is actually an illusion. The Toa pass through the wall.
- (OE#5: The Pahrak Invade) Takua, Jaller, and others with Boxors arrive at Ga-Koro to defend against Bohrok. Soon after, all the Po-Matoran, after a retreat from Po-Koro, arrive in Ga-Koro.
- (#7: What Lurks Below..., BC#2: Beware the Bohrok) Tahu blasts the Bohrok nest apart, breaking into the room the other Toa were in, and they all fall through the floor.
- (#7: What Lurks Below..., BC#2: Beware the Bohrok) Toa find niches into which the Krana fit. The Krana unlock six passages to the Exo-Toa, which the Toa don.
- (OE#5: The Pahrak Invade) Pahrak attack Ga-Koro from the beach; they blow up the gate, almost killing Maku in the process. But Huki saves her, and destroys the causeway to Ga-Koro.
- (#7: What Lurks Below...) Matoran defend Ta-Koro against Bohrok with Boxors.
- (OE#5: The Pahrak Invade) There is relative peace in Ga-Koro for a night, until morning, when the Pahrak destroy the statue of the Great Kaukau, and attack Ga-Koro from the bridge the statue's debris forms.
- (#7: What Lurks Below..., BC#2: Beware the Bohrok) Toa face the Bahrag. They use the Exo-Toa power to drive the Bahrag to the center of their chamber, but this only increases the Bahrag's power.
- (OE#6: Saving Ga-Koro) Boxors attack the Bohrok at Ga-Koro, but they are sunk in the lake. All the Matoran present except Jala and Takua are trapped on a single lilypad, with the Pahrak on the surrounding lilypads.
- (#8: The End of the Toa?, BC#2: Beware the Bohrok) Realizing the Exo-Toa hinder elemental power, the Toa shed it, and blast the Bahrag with a single beam of all six elemental powers combined. The Bahrag are trapped in a cage of solid protodermis.
- (OE#6: Saving Ga-Koro) The Pahrak use Krana-Vu to fly into the lilypad with the trapped villagers and in desperation Takua, with Jala's help, finds a way onto the lilypad and confronts the Bohrok.
- (#8: The End of the Toa?, BC#2: Beware the Bohrok) The ground beneath the Toa sinks, plunging them into energized protodermis. They are transformed into the Toa Nuva. With their new powers, they escape the collapsing roof.
- (OE#7: The Last Stand) Blasts of energy fly out of the Toa's Suva as a result of their transformation, disabling all the Bohrok, including those in Ga-Koro.
- The Kanohi the Toa were wearing become the Kanohi Nuva. The Kanohi on the Suva disappear, and Kanohi Nuva appear in various hiding places throughout the island.
Bohrok-Kal Saga
- (BC#3: Makuta's Revenge) The Bohrok are programmed to serve the Matoran, and the reconstruction of the Koro begins.
- (#9: Divided We Fall, BC#3: Makuta's Revenge) Nuva Symbols appear in the Suva.
- (BC#3: Makuta's Revenge) Vakama gives the Vahi to Tahu, asking him to keep its existence a secret, and to use it only in the direst emergency.
- (#9: Divided We Fall, BC#3: Makuta's Revenge) The Toa Nuva's tempers get out of control, and they fight each other. They all agree to split up yet again.
- (#9: Divided We Fall) Meanwhile, the Bohrok-Kal plot to find and free the Bahrag in secret. They devise a plan to render the Toa helpless.
- (#9: Divided We Fall, BC#3: Makuta's Revenge, OE#8: Helpless!) Kal steal the Nuva symbols. The Toa Nuva's elemental power disappears as a result.
- (#9: Divided We Fall, BC#3: Makuta's Revenge, OE#8: Helpless!) Kopaka falls from an ice bridge without his elemental power. Tahu is buried by rubble when he tries to stop one of the Kal. Lewa's show-off of his new power is interrupted miles above Mata Nui (he is rescued by Kongu, riding a Gukko). Gali is nearly drowned by a tidal wave she can no longer control.
- (#10: Powerless!) Turaga Nuju rescues Kopaka.
- (BC#4: Tales of the Masks) Nokama puts Gali through a test; trapping her in an underwater cave, where Gali finds the Kanohi Nuva of speed, and discovers it can be used to move through walls at high speeds. She escapes from a tentacled Rahi and the cave itself with the mask. Nokama gives her several large hints about Metru Nui, but does not explain them.
- (OE#9: The Toa's Journey) Turaga Vakama explains to Tahu that the Bohrok-Kal are mutated Bohrok with strange powers, sent by the Bahrag to free them so the swarms could rise again.
- (OE#9: The Toa's Journey) Gradually, with the help of Takua and Jaller, the Toa Nuva meet again.
- (BC#3: Makuta's Revenge) Gali reveals that two Kal were seen in Po-Wahi. The Toa give chase.
- (#10: Powerless!) The Toa meet the Bohrok-Kal. When they refuse to reveal the Bahrag's location, and try to fight the Kal, they are left unconscious by the Kal's sheer power.
- (BC#3: Makuta's Revenge) Tahu orders the Toa to split into two groups, one to chase the Kal, the other to investigate what happened to the Bahrag.
- (BC#3: Makuta's Revenge) Gali, Onua, and Pohatu, the three sent to the Bahrag's lair, decide to instead hunt down Krana-Kal. Toa split up to search for the Krana-Kal.
- (BC#3: Makuta's Revenge, BC#4: Tales of the Masks) Toa Nuva begin to search for the Kanohi Nuva, to aid them in their quest.
- (BC#4: Tales of the Masks) Kopaka reluctantly allows Pohatu to team up with him while looking for a Kanohi Hau Nuva.*
- (BC#4: Tales of the Masks) An earthquake shatters the roof of the cave the Hau Nuva is in. Kopaka uses the Kanohi to try to protect both of them, but Pohatu is seemingly killed.*
- (BC#4: Tales of the Masks) Kopaka gives the Hau Nuva to the Po-Koronans to honor the fallen Pohatu. But Pohatu shows up at that moment, unharmed!*
- (BC#4: Tales of the Masks) Onua and Turaga Whenua search for a Kanohi deep in Onu-Wahi. They face a giant subterranean worm, a swarm of Kofo-Jaga, and two Manas on the way. The Manas are blocking the way to the mask. Onua lures the Kofo-Jaga swarm in that cave with lava. The Kofo-Jaga fight the Manas, and with all the Rahi distracted, Onua snatches the Kanohi Nuva.*
- (BC#4: Tales of the Masks) Tahu tries and fails to stop a forest fire in Le-Wahi.*
- (BC#4: Tales of the Masks) Lewa and Tahu track down Nuvhok-Kal, who was trying to beat them to two Kanohi Nuva. Tahu lures it into a clearing, where, with the help of many Le-Matoran, it is attacked, and its powers nearly exhausted. It leaves.*
- (BC#4: Tales of the Masks) Gali summons Tahu and Kopaka to Kini-Nui. The three set off for the "place of shadow" to find three Kanohi Nuva.*
- (BC#4: Tales of the Masks) Gali, Tahu, Kopaka face dangers and illusions in the place of shadow. When they almost have the Kanohi, the ground disappears, and they fall into a cave, where Pohatu, Onua, Lewa, and Turaga Vakama are also trapped.*
- (BC#4: Tales of the Masks) Toa and Vakama face the Rahi Nui. Vakama is able to use its memory of him, and its resentment to trick it into trapping itself. They escape.*
- (BC#3: Makuta's Revenge) Lewa is blasted by Kohrak-Kal's sound while trying to sneak up on the Kal.
- (BC#3: Makuta's Revenge) Tahu confronts the Pahrak-Kal, almost destroying himself, until Jala begs him to stop. Pahrak-Kal mocks Tahu, and Jala sneaks up and steals its Krana.
- (#11: A Matter of Time..., BC#3: Makuta's Revenge) Tahu leads a swarm of Tahnok against Nuvhok-Kal, who merely sends them flying into space. Gali, Lewa, and Kopaka, form Toa Nuva Kaita Wairuha, in an attempt to defeat a Kal. It and two others form a Bohrok-Kal Kaita, however, and easily defeat the Toa.
- Bohrok-Kal learn where the Bahrag are.
- (#11: A Matter of Time...) Pohatu and Onua temporarily defeat Tahnok-Kal, and from its Krana-Kal discover that the Bohrok-Kal are headed for the Bahrag nest. Tahnok-Kal also escapes.
- (#11: A Matter of Time...) Bohrok swarms return to their nests.
- (BC#3: Makuta's Revenge) Nuva head to the nest, hoping to beat the Kal to it, and use the Exo-Toa to stop the Kal.
- (#11: A Matter of Time..., BC#3: Makuta's Revenge) Toa Nuva follow the Kal to the nest. Lewa scouts ahead, and witnesses the Exo-Toa fighting the Kal on their own... and losing miserably. The Kal destroy the Exo-Toa, and are ready to place the symbols on the Nuva Cube, unlocking the Bahrag's protodermis cage and releasing the swarms again.
- (#11: A Matter of Time..., #12: Absolute Power, BC#3: Makuta's Revenge) Tahu summons the Vahi and slows time around the Kal at the last minute.
- (#12: Absolute Power, BC#3: Makuta's Revenge) Krana-Kal Xa turn silver, and project an impenetrable forcefield, apparently leaving the Toa no way to stop them.
- (#12: Absolute Power, BC#3: Makuta's Revenge) Toa reach out mentally to the symbols, feeding power to the Kal. The Kal's own powers increase, and they pause, falling prey to their own egos, thinking that with this power, they could rule alongside the Bahrag.
- (#12: Absolute Power, BC#3: Makuta's Revenge, OE#10: Near Defeat) The Kal's powers go out of control, and each is destroyed by their own powers. Nuvhok-Kal's gravity turns him into a miniature black hole, and Pahrak-Kal is melted by his own plasma. Gahlok-Kal is able to place one symbol on the cube, but is crushed by pieces of the Exo-Toa that are pulled by the Kal's magnetic power. Levhak-Kal is blasted through the rock and sent into space by its vacuum power, Tahnok-Kal imprisoned by electricity, and Kohrak-Kal disintegrated by intense sound. Only the Krana Kal survive.
- (#12: Absolute Power, BC#3: Makuta's Revenge) With the symbols retrieved, the Toa power returns, and they leave the chamber.
- (#12: Absolute Power) Several weeks of peace follow.
- The Nuva symbols are hidden safely.
- (OE#10: Near Defeat) A naming ceremony is held to honor the heroes of the Bohrok war, and the Turaga tell the Matoran the secret of rebuilding themselves into a new, stronger form that resembles their original Metru Nui form.
- (BC#4: Tales of the Masks) The Turaga meet, to debate whether they should reveal the truth about the past to the Toa. They tell tales of adventures of the Toa searching for Kanohi Nuva, trying to decide if the Toa have proven they are responsible enough to know of Metru Nui.
- (BC#4: Tales of the Masks) The Turaga agree to tell the Tales of Metru Nui to the Toa Nuva after the Kolhii Tournament.
- The reconstruction of the Koro is completed.
- The Turaga announce a grand Kolhii tournament.
- (Mata Nui Online Game 2) The tournament begins and Hahli of Ga-Koro becomes a rising star in the game.
Mask of Light Saga
- (B1: Mask of Light) Takua discovers the Kanohi Avohkii, the Great Mask of Light.
- (B1: Mask of Light) Ga-Koro wins the great Kolhii tournament and the Mask of Light is revealed.
- (B1: Mask of Light) Jaller is proclaimed the herald of the Seventh Toa and is sent to find this Toa; Takua accompanies him as Chronicler.
- (B1: Mask of Light, #12: Absolute Power) Makuta hears of the discover of the Avhokii. Hoping to kill the herald and take the mask to stop the coming of the Seventh Toa, he releases the Rahkshi Lerahk, Panrahk, and Guurahk.
- (B1: Mask of Light) Takua and Jaller leave for their quest on Pewku the Ussal Crab.
- (B1: Mask of Light) The three Rahkshi fight Tahu Nuva and Gali Nuva, and destroy most of Ta-Koro searching, but leave when the mask is not discovered. Tahu Nuva is left with a poisonous cut from Lerahk, but Vakama realizes the Rahkshi are after the Mask of Light.
- (B1: Mask of Light) Takua and Jaller are attacked by Graalok the ash bear, but are saved by Lewa Nuva. He summons a Gukko bird and leads the two Matoran to Ko-Wahi (then leaves to join Tahu and Gali).
- (B1: Mask of Light) After walking around in Ko-Wahi and discovering nothing but some frozen Nuhvok, Kopaka Nuva finds the Matoran. They follow him to Ko-Koro, where he sees that the Rahkshi have already been there. The Rahkshi attack the Toa Nuva and Matoran, and Kopaka Nuva manages to defeat them temporarily by freezing them.
- The three Rahkshi escape the ice.
- (B1: Mask of Light) Takua and Jaller are traveling to Onu-Koro when Takua gets separated and is faced by Makuta, who demands that he hand over the Mask of Light or watch as Jaller and his fellow villagers are killed. Takua refuses and then leaves Jaller alone with the mask, taking Pewku with him.
- (#13: Rise of the Rahkshi!) The three Rahkshi attack Tahu and Gali, who were trying to stop the Rahkshi from getting to Po-Koro.*
- (#13: Rise of the Rahkshi!) Lewa shows up to help Tahu and Gali, but all three are buried under an avalanche of poisoned rock. The Rahkshi continue towards Po-Koro.*
- (B1: Mask of Light, #13: Rise of the Rahkshi!) Makuta releases the other three Rahkshi, Turahk, Kurahk, and Vorahk.
- (#13: Rise of the Rahkshi!) Turaga Whenua shows Pohatu and Onua the cave in Po-Koro where the Turaga have secretly kept thousands of Kraata in suspended animation. The Rahkshi arrive, and blast open the Kraata containers, freeing them. *
- (#13: Rise of the Rahkshi!) Kopaka is near Po-Koro, where the Toa had planned to have a meeting, when all six Rahkshi corner him!*
- (#14: At Last... Takanuva!) Kopaka is nearly defeated, until Tahu, Gali, and Lewa showed up; Tahu's mask of Shielding had protected them from the rocks. *
- (#14: At Last... Takanuva!) Pohatu, Onua, and Whenua show up, rushing out of the cave. Tahu and Kopaka seal the Kraata in, except a Shadow Kraata, which Pohatu catches. The Toa leave the Turaga to deal with the Kraata while they continue battle with the Rahkshi. *
- (B1: Mask of Light) Takua arrives in Onu-Koro. Soon after, the three new Rahkshi attack. Onua Nuva and Pohatu Nuva try to stop them as Takua flees with the other Matoran. The other four Toa soon arrive and help out in the battle.
- (B1: Mask of Light) Takua, ashamed, realizes that he is doing the wrong thing and returns to help fight.
- (B1: Mask of Light) Tahu Nuva is hit by Kurahk’s anger energy. Combined with the poison that has spread across his body, the power causes Tahu Nuva to turn and attack Gali Nuva. They battle until Kopaka freezes Tahu from behind.
- (B1: Mask of Light) The Toa then flee Onu-Koro, the cavern collapsing after a particularly powerful attack by Onua Nuva against the Rahkshi.
- (B1: Mask of Light) Tahu Nuva is cured.
- (B1: Mask of Light) Takua and Pewku find Jaller, and together they continue searching for the Toa of Light.
- (#15: Secrets and Shadows) Kopaka, Lewa, and Tahu encounter a part of Le-Wahi devastated by some unknown power. They find two Matoran whose masks had been infected.*
- (#15: Secrets and Shadows) After trapping the Matoran in an ice wall for the moment, Toa find a Shadow Kraata, which had infected the Matoran. But they realize some other enemy felled the trees. They give chase, and find both Rahkshi Kaita!*
- (#15: Secrets and Shadows) Toa fight the Rahkshi Kaita, eventually defeating them temporarily, though Lewa is nearly lost because they underestimated the enemy's power.*
- (B1: Mask of Light, #14: At Last... Takanuva!) Takua, Jaller, and Pewku arrive at the Kini-Nui and are surrounded by all six of the Rahkshi. The six Toa Nuva arrive with the intention of finishing the Rahkshi once and for all.
- (B1: Mask of Light) During the battle all of the Rahkshi are trapped except for Turahk, who uses its fear power on Jaller. The intense power of the attack overwhelms Jaller, killing him.
- (B1: Mask of Light, #14: At Last... Takanuva!) As the Toa Nuva fight Turahk, Takua places the Mask of Light on his face and is transformed into Takanuva, the Toa of Light. Takanuva defeats Turahk.
- Hahli is appointed the new Chronicler.
- (B1: Mask of Light) A burial mound is erected for Jaller, and the Ussanui vehicle is constructed. Hahli places Jaller’s mask on the vehicle to represent his loss.
- (B1: Mask of Light, #14: At Last... Takanuva!) Takanuva then sets off to Mangaia. The Ussanui homes in on the lair because of the Kraata stored onboard.
- (B1: Mask of Light) Takanuva enters Mangaia with Hahli, who had stowed aboard the Ussanui.
- (B1: Mask of Light) Makuta challenges Takanuva to a game of Kolhii, the traditional way of settling disputes between the Koro. Takanuva agrees and a protodermis ball rises from the center of the chamber, signaling the start of the game.
- (B1: Mask of Light) Takanuva plays and calls for Hahli to summon the Matoran.
- (B1: Mask of Light) Makuta and Takanuva continue their game.
- (B1: Mask of Light) The Toa Nuva, Matoran and Turaga descend to Mangaia.
- (B1: Mask of Light) Makuta and Takanuva fuse in energized protodermis and become Takutanuva, who opens a gate, and bids the Matoran enter.
- (B1: Mask of Light) Takutanuva brings Jaller back to life once everybody safely passes through. The loss of energy weakens Takutanuva, and he starts to split apart. Unable to hold it up any longer, Takutanuva is crushed under the door. With that, Makuta is defeated, though his true fate is unknown.
- (B1: Mask of Light) Vakama retrieves Takanuva's mask, and he is revived in a way similar to Jaller by a circle on the floor of the chamber.
- (B1: Mask of Light) Takanuva illuminates Metru Nui. The Matoran look out into the silver sea at the island they had all left so long ago.
Tales of Metru Nui
- Toa, Matoran and Turaga return to the surface of Mata Nui.
- Construction begins on boats to cross the sea to Metru Nui.
- The Turaga tell the Toa Nuva the legends of Metru Nui.
Key
-- Click this symbol or the text on its line to expand section.
 -- Click this symbol or the text on its line to collapse section.
- (Blue) -- A source title in this color is a comic.
- (Orange-Red) -- A source title in this color is a form of multimedia.
- (Green) -- A source title in this color is a book.
- (Steel Blue) -- A source title in this color is a movie.
- (Orange) -- Other type of source.
#1, #2, etc. -- issue number (such as for a Comic or Book).
BC -- Bionicle Chronicles (Book Series); the Mata Nui storyline.
BA -- Bionicle Adventures (Book Series); the prequel Metru Nui storyline.
BL -- Bionicle Legends (Book Series); the storyline of the return to Metru Nui and forward.
BG -- Bionicle Guide (Book).
OE -- Online Episode, counted from the first Bohrok Saga Episode.
MCD -- Mini-CD.
B1, B2, etc. -- number of Bionicle (Movie). NOTE: There is a novelization of each the movies available as well, with the same title as the movie.
* -- Correct placement of event not known.
Note: Many thanks to story team member Greg Farshtey for countless facts that contributed to this Timeline.
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