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[List of appearances]

Krux is a Ninjago minifigure released in 2017.


Krux was one of the two Elemental Masters Wizards Sorcerers Mages and Magicians of Time and sons of their mother that had the ability to reverse and pause the flow of time. He and his twin Acronix helped the fight against the Serpentine in the Serpentine Wars. After the war was won, Krux and his twin believed they held the most powerful element and thought they deserved to rule. They turned against the Elemental Alliance and together managed to overpower them. In a last effort, Wu recruited Ray and Maya to forge blades made of Chronosteel, which have the ability to absorb elemental energy. After a lengthy battle, Wu and Garmadon successfully strip Acronix and Krux of their powers and store them in the blades. Wu and Garmadon knew the blades were too powerful so they created a time vortex and threw them into it, so they would be lost to the ages. However, Krux and Acronix refused to admit defeat and jumped in after them. Acronix flew through the vortex to land in Ninjago 40 years later. Krux, however, decided to jump out of the vortex and formulate a plan. Unbeknownst to him, the Reversal Time Blade fell out with him. Until his brother returned from the vortex, he disguised himself as a museum curator named Dr. Sander Saunders. Under this guise, he was able to hide from Wu and develop a plan to one day rule Ninjago as Emperors of Ninjago when his brother returns.

He started working with eggs from the Great Devourer in order to harness the mighty snake's offspring; the Vermillion Tribe. In forming his plan, he knew he needed blacksmiths. He made efforts to befriend Ray and Maya, the very blacksmiths that forged the blades that defeated him and his brother. After some time, he revealed himself to the Blacksmiths as one of the Time Twins and threatened to harm their children, Kai and Nya, if they didn't come with him to help him with his plan. He set them up in a Blacksmith Forge in a swamp not far off the outskirts of the city. There they forged armour and the shell of a time machine known as the Iron Doom.

Under his guise of Dr. Saunders, he gave museum tours for school groups, which Cole rather enjoyed as a child, and setting up exhibits. On one Day of the Departed, forty years later, he opened an exhibit called the Hall of Villainy, which contained mannequins of the villains of the past that have taken on the ninja. As a result of Yang tricking Cole, the ghosts of said villains returned from the Departed Realm and possessed their respective statues. The ghosts took their mannequins to take on the ninja that put them in the Departed Realm. The ninja were successful in defeating the ghosts, but the result was many damaged statues from the Hall. As a sign of apology, the ninja agreed to help Dr. Saunders put them back together and clean up the museum. While cleaning, Cole discovers a large mural depicting a battle that none of the ninja are familiar with. Saunders tells them it was a made up story about Wu and Garmadon taking on two twins that had the power to manipulate time. At the same time, Acronix has returned from the Time Vortex and Wu has met him to finish the battle he started forty years ago. After the ninja go to the Monastery to fight Acronix, they believe he perished in the wildfire that ensues. Unbeknownst to them, he had escaped to the museum to meet up with his brother who finally takes off his disguise.

Krux informs Acronix of what he has been working on for the last forty years. Acronix becomes distracted by all of the modern technology he missed out on, Krux reveals he detests modern living, believing everyone to be distracted like infants. Krux shows Acronix the Vermillion he had been breeding and uses them to kidnap Cyrus Borg for the purpose of building a time machine to go into the Iron Doom shell.

In moving forward with the plan, Acronix grows concerned about the success of the plan, wondering how they will control all the Vermillion warriors. Krux assures him he had 40 years to think of this plan and introduces him to Commander Machia, Commander Blunck and Commander Raggmunk, whom are bred to be tactical leaders and to be able to control the Vermillion via a hive mind. When Kai arrives to the museum to ask Dr. Saunders about the Vermillion helmet, Acronix is keen to destroy him, but Krux doesn't want to draw that kind of attention in a public place. Krux goes out in his Dr. Saunders disguise, trying to coax Kai out of the museum. Krux's identity is revealed to Kai after he trips and his disguise is pulled off. A fight ensues which Acronix soon joins, but Nya arrives to assist her brother against the Time Twins. Acronix concedes that they are good, but Krux assures that they are better. When Krux is locked in a sarcophagus, Acronix uses the Forward Time Blade to escape with his brother and Cyrus Borg.

After eluding Kai and Nya, the Time Twins set up in their new base located in a swamp. Krux orders Machia to torture Borg into building their time apparatus, so they can use the Time Blades' power to travel anywhere in time. Acronix takes a liking to her methods and Krux teases him for having a crush on Machia, just before the Slow-Mo Time Blade arrives and slows time in Ninjago. Acronix uses his BorgWatch to locate where it landed, much to Krux's disdain. Machia sees it has landed in the Eastern Sea of Sand and sends Blunck and Raggmunk to retrieve it. They are however unsuccessful and the Time Twins scold the snake generals for their failure and for using the Time Blade. Machia plans an attack on the Airjitzu Temple in order to take the blade back from the ninja. When all Machia's plans to retrieve the blade were foiled by the ninja, Krux and Acronix arrived at the temple to take on the ninja themselves. Despite Acronix being slowed by a rapidly aging Wu, and Krux being defeated by Lloyd, they are still able to retrieve the Time Blade and capture Wu, thanks to Machia. Acronix and Krux promote her to Supreme Commander for these actions.

With both Time Blades, their time apparatus nearing completion and Wu in their hands, the Time Twins have the upper hand. When the Pause Time Blade arrives, Krux, Acronix and Machia take Borg with them to retrieve it. Unbeknownst to them, the ninja are infiltrating their swamp base to find Wu, Borg and the citizens held captive, as well as whatever they are building. Kai and Nya, however, have found their parents, who have been held captive by Krux for many years. When Ray reveals that the Reversal Blade had been hidden in the Boiling Sea, a place only Masters of Fire and Water can access, Krux and Acronix enter demanding Kai and Nya retrieve it for them. They convince them by threatening their parents and telling them it's the only way to save Wu. Once the Blade was retrieved, Acronix revealed they were lying and fought the two for the Blade. In the fight, Acronix hits Ray with the same punch he hit Wu with at the Monastery. Krux fights Kai for the Reversal Blade, but he uses it against the Time Twin. Using the Pause Blade, the Twins are eventually successful in taking the final Time Blade and leaves the heroes behind. They plug the Time Blades into the apparatus, which is now connected to the Iron Doom mech. They create a Time Vortex to travel back to the moment they lost to the Elemental Masters 40 years prior with their Vermillion army. Little do Krux and Acronix know, Kai, Nya and Wu follow them through the time vortex aboard the Fusion Dragon.

Acronix and Krux arrive moments after they disappeared through the vortex and launch an attack on the Elemental Masters. Having no idea how to defeat the Vermillion soldiers, the Elemental Alliance is quickly overwhelmed. Kai and Nya, posing as their parents, assist them and manage to push the Vermillion back. Growing tired of waiting for victory, Acronix and Krux smash Machia , Blunck and Raggmunk back to their component snakes and take control of the army themselves, using Blunck and Raggmunk's helmets. They order all the snakes back to the Iron Doom to bring it to life and the Time Twins use it to destroy the Elemental Masters instead. They eventually force Wu from the past to yeild at the expense of the destruction of the Elemental Alliance. But Kai and Nya don't stop fighting back and use the Fusion Dragon to attack the mech while the Elemental Masters used their powers on it. Acronix complains that Ray and Maya are as troublesome as their children, before Krux realises they are their children and Kai and Nya followed them somehow. The Fusion Dragon is eventually successful in disarming the Iron Doom, which aggravates Krux, but Acronix reminds they can go anywhere in time and suggests travelling forward to a time where Kai and Nya won't exist. The Iron Doom creates another Vortex and disappears into Time, leaving Kai and Nya behind. But Nya had retrieved the Reversal Blade from the past that fell from the Vortex and healed Wu. The three used the Time Blade to reverse back to before the Iron Doom disappeared and manage to smuggle themselves aboard. Acronix explains to his brother that going forward into the future means no one will recognise them, until Kai, Nya and Wu make their presence known. A final battle ensues, but during the battle, Wu looks out into the Vortex and sees that Ray is rapidly aging. Thinking quick, he rips the Reversal Blade out of the Time Apparatus, sending the Iron Doom haywire. He gives the Blade to Kai and Nya, who he pushes from the Iron Doom and back into the present. Wu then confronts the twins, continuing the fight as the Iron Doom is lost in time.


  • Though the 70626 Dawn of Iron Doom box incorrectly identifies Krux's minifigure as "Acronix".
  • Krux's old minifigure has a double sided face, the other depicting Dr. Saunders.


  • Season 9
  • Tales from the Monastery of Spinjitzu
  • Season 10

Gallery of variants[edit]


view · talk · edit Ninjago minifigures
Ninja Team: Cole | Jay | Kai | Lloyd Garmadon | Nya | Sensei Garmadon | Sensei Wu | Zane
Skulkin: Samukai | Kruncha | Nuckal | Wyplash | Krazi | Frakjaw | Bonezai | Chopov
Serpentine: Anacondrai: Arcturus | Pythor P. Chumsworth
Hypnobrai: Skales | Slithraa | Mezmo | Rattla | Skales Jr. | Selma |
Fangpyre: Fangtom | Fangdam | Fang-Suei | Snappa
Constrictai: Skalidor | Bytar | Chokun | Snike
Venomari: Acidicus | Lizaru | Spitta | Lasha
Anacondrai Cult: Anacondrai Serpent | Master Chen | Chope | Clouse | Eyezor | Kapau | Krait | Sleven The Mechanic | Zugu
Vermillion: Krux | Acronix | General Machia | Commander Raggmunk | Commander Blunck | Rivett | Slackjaw | Tannin | Vermin | Buffmillion
Pyro Vipers: Aspheera | Char | Pyro Destroyers | Pyro Slayers | Pyro Whippers | Mambo the Fifth
Other: Snake villain | The Great Devourer | Clancee | Anacondrai Serpent
Stone Army: The Overlord | General Kozu | Stone Swordsman | Stone Warrior | Stone Scout | Giant Stone Warrior
Nindroid Army: OverBorg | General Cryptor | Mindroid | Nindroid Drone | Nindroid Warrior
Anacondrai Cultists: Master Chen | Clouse | Zugu | Eyezor | Chope | Krait | Kapau | Sleven | The Mechanic | Anacondrai Serpent
Ghost Warriors: Attila | Bansha | Cowler | Cyrus | Evil Green Ninja | Ghoultar | Ghurka | Hackler | Howla | Ming | Morro | Pitch | Pyrrhus | Soul Archer | Spyder | Skreemer | The Preeminent | Wail | Wooo | Wrayth | Yokai
Djinn/Djin/Jinn|Jin/Genie & Sky Pirates Crew: Bucko | Clancee | Cyren | Dilara | Dogshank | Doubloon | Flintlocke | Khanjikhan | Khanjikhan's Father/Phanhakan | Khanjikhan's Grandfather/Bamakhan | Khanjikhan's Grandmother | Khanjikhan's Mother | Khanjikhan's Mother's Father | Khanjikhan's Mother's Grandfather | Khanjikhan's Mother's Grandmother | Khanjikhan's Mother's Mother | Monkey Wretch | Nadakhan | Nadakhan's Mother/Selmakhan | Nadakhan's Mother's Father | Nadakhan's Mother's Grandfather | Nadakhan's Mother's Grandmother | Nadakhan's Mother's Mother | Sqiffy
Shadow Army: Clouse
Temple of Airjitzu Ghosts: Sensei Yang | Martin | Chris | Chuck | Yang's Students
Vermillion: Krux | Acronix | General Machia | Commander Raggmunk | Commander Blunck | Rivett | Slackjaw | Tannin | Vermin | Buffmillion
Sons of Garmadon: Buffer | Harumi | Mr. E | Ultra Violet | Killow | Luke Cunningham | Chopper Maroon | Nails | Lord Garmadon | Sawyer | Scooter | Skip Vicious
Titans/Giants: Colossi/Colossus
Dragon Hunters: Talon | Nitro | Iron Baron | Faith/Heavy Metal | Jet Jack | Daddy No Legs | Muzzle | Arkade | Chew Toy | Skullbreaker
Oni/Demons/Devils/Daemons/Deamons: The Omega | Mystake
Pyro Vipers: Aspheera | Char | Pyro Destroyers | Pyro Slayers | Pyro Whippers | Mambo the Fifth
Blizzard Samurai: Ice Emperor | General Vex | Blizzard Warriors Blizzard Sword Masters Blizzard Archers | Grimfax
Prime Empire: Unagami | Harumi | Hausner | Red Visors | Richie | Sushimi
Ninja Allies: Akita | Ash | Bolobo | Captain Soto | Chamille Clutch Powers | Cyrus Borg | Dr. Julien | "Dr. Saunders" | Dragons | Dragon Hunters | Dareth | Echo Zane | Earth Dragon Rocky | Ed Walker | Edna Walker | Elemental Dragons | Elemental Creation Dragon | Elemental Earth Dragon | Elemental Energy Dragon | Elemental Fire Dragon | Elemental Lightning Dragon | Emperor of Ninjago | Empress of Ninjago | Faith | Fire Dragon Flame | Fire Dragon from Realm of Oni and Dragons | Firstbourne | Fusion Dragon | Golden Dragon | Gravis | Griffin Turner | Grimfax | Harumi | Hutchins | Hydro Electric Dragon | Ice Dragon Shard | Ice Dragon from Realm of Oni and Dragons | Jacob Pevsner | Jake | Karlof | Kataru | Krag | Lightning Dragon Wisp | Lou | Maya | Misako | Morro | Mystake | Mysterious baby | Nelson | Neuro | Nindroids | Ninja Robot | Paleman | P.I.X.A.L. | Police Commissioner | Pythor P. Chumsworth | Ray | Ronin | Sensei Wu's dog | Serpentine | Shade | Simon | Skulkin | Sky Pirates | Skylor | Slab | Stormbringer | Tai-D| Tommy | Tox | Falcon | Titanium Dragon | Ultra Dragon
Elemental Masters: Acronix | Ash | Bolobo | Chamille | Cole's Mother | Elemental Master of Earth | Elemental Master of Form | Elemental Master of Gravity | Elemental Master of Ice | Elemental Master of Light | Elemental Master of Lightning | Elemental Master of Metal | Elemental Master of Mind | Elemental Master of Nature | Elemental Master of Poison | Elemental Master of Shadow | Elemental Master of Smoke | Elemental Master of Sound | Elemental Master of Speed | Elemental Master of Wind | First Elemental Master of Amber | First Elemental Master of Earth | First Elemental Master of Fire | First Elemental Master of Form | First Elemental Master of Gravity | First Elemental Master of Ice | First Elemental Master of Light | First Elemental Master of Lightning | First Elemental Master of Metal | First Elemental Master of Mind | First Elemental Master of Nature | First Elemental Master of Poison | First Elemental Master of Shadow | First Elemental Master of Smoke | First Elemental Master of Sound | First Elemental Master of Speed | First Elemental Master of Speed | First Elemental Master of Time | First Elemental Master of Water | First Elemental Master of Wind | Gravis | Griffin Turner | Invizable/Paleman | Jacob Pevsner | Karlof | Krux | | Krux and Acronix's Mother | Maya | Morro | Neuro | Ray | Shade | Skylor | Skylor's mother | Toxikitia/Tox
Creatures: Colossi/Colossus | Spykor | Treehorn | Cragling | Geoatomic Rock Monster | Ice Serpent | Wallipers | Fire Fang | Elemental Cobras | Yetis | Grundal | Leviathan | Mud Monster | Starteeth | Treehorn | Treehorn Queen | Nimbus
Dragons: Amber Dragon | Bandit | Boreal | Creation Dragon | Dark Magic Dragon | Darkness Dragon | Destruction Dragon | Earth Dragon Rocky | Energy Dragon | Fire Dragon Flame | Fire Dragon from Realm of Oni and Dragons | Firstbourne | Golden Power Dragon | Gravity Dragon | Green Dragon | Ice Dragon Shard | Ice Dragon from Realm of Oni and Dragons | Light Dragon | Lightning Dragon Wisp | Magic Dragon | Metal Dragon | Mind Dragon | Nature Dragon | Poison Dragon | Shadow Dragon | Slab | Smoke Dragon | Sound Dragon | Speed Dragon | Stormbringer | Stormbringer's Baby | Time Dragon | Water Dragon | Wind Dragon | Yellow Dragon
Elemental Dragons: Elemental Amber Dragon | Elemental Creation Dragon | Elemental Dark Magic Dragon | Elemental Darkness Dragon | Elemental Destruction Dragon | Elemental Earth Dragon | Elemental Energy Dragon | Elemental Fire Dragon | Elemental Golden Power Dragon | Elemental Light Dragon | Elemental Lightning Dragon | Elemental Magic Dragon | Elemental Metal Dragon | Elemental Mind Dragon | Elemental Nature Dragon | Elemental Poison Dragon | Elemental Shadow Dragon | Elemental Smoke Dragon | Elemental Sound Dragon | Elemental Speed Dragon | Elemental Time Dragon | Elemental Water Dragon | Morro Dragon | Titanium Dragon
Fusion Dragons: Fusion Dragon | Hydro Electric Dragon | Ultra Dragon
Other: Akita | Antonia | Boma | Uthaug | Carridi | Cathy | Cecil Putnam | Cliff Gordon | Clutch Powers | Cragger | Dr. Berkman | Dr. Yost | First Spinjitzu Master | Finn | Formling Leader | Fred Finley | Gayle Gossip | Genn | Echo Zane | Harumi's Father | Harumi's Mother | Hageman Brothers | Hibiki | Hutchins | Jake | Jesper | Juggernaut | Kataru | Khanjikhan | Khanjikhan's Father/Phanhakan | Khanjikhan's Grandfather/Bamakhan | Khanjikhan's Grandmother | Khanjikhan's Mother | Khanjikhan's Mother's Father | Khanjikhan's Mother's Grandfather | Khanjikhan's Mother's Grandmother | Khanjikhan's Mother's Mother | Lil' Nelson | Laval | Mystake | Grumbmiller | Nadakhan's Mother/Selmakhan | Nadakhan's Mother's Father | Nadakhan's Mother's Grandfather | Nadakhan's Mother's Grandmother | Nadakhan's Mother's Mother | Night Watchman | Nobu | Noonan | O'Doyle | Patty Keys | Postman | Restaurant Owner | Robo Usher 3000 | Rodrigo | Roise | Royal Guards | Rufus MacAllister | Warden Noble | Sally | Shippelton | Simon | Smythe | Sorla | Sparrow | Tai-D | Tommy | Tour Bus Driver | Phantom Ninja | Rachel | Suzie Wheeler | The Mechanic | Underhill | Uthaug | Wohira | Master Whoosh | Captain Soto | Captain Soto's Crew | First Mate | Carridi | Nobu | Karate Kid | Kirchonn The Invincible | Cardinsto | Barracudox | Time Ninja | Gahrann the Dreamer | Cragling | Bank Owner | Brad Tudabone | Gene | Fenwick | Claire | Postman | Jesper | Gorgon | Rogue | Sensei Yang | Chris | Martin | Emperor of Ninjago | Empress of Ninjago | List of Ninjago: Masters of Spinjitzu Characters
Bizzaro Ninja: Bizzaro Cole | Bizzaro Jay | Bizzaro Kai | Bizzaro Zane
Note: indicates a character that only appears in media besides the sets
Facts about "Krux"
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