Icon-samurai.pngThis article is about a/an Nighlok Monster in Power Rangers Samurai and Power Rangers Super Samurai.Icon-prss.png

""Ah, the Tengen Temple. A symbol of Nighlok defeat.""

""I defeated 4 rangers, and besides it was my plan!""
―Arachnitor last words before being mutated into a talkless mutant and his death much later[src]

Arachnitor was a spider-themed Nighlok and one of the strongest monsters in the entire Power Rangers franchise. Arachnitor served Master Xandred at first but then betrayed him and decided to usurp him and become a ruler of Nighloks himself. Arachnitor is a notorious Nighlok and is greatly feared by all Nighloks, including Octoroo. He serves as the main antagonist of the episodes "The Tengen Gate", "Boxed In" and "Super Samurai".  


Arachnitor was a notorious Nighlok with a fierce reputation as one of the most powerful Nighloks. Arachnitor was greatly feared by all nighloks, including Octoroo. Arachnitor served Master Xandred at first, but then decided to overthrow his master and become the ruler of Nighloks himself and conquer the human world. In the seventeenth episode, Arachnitor decided to overthrow Xandred by sealing him, while Xandred was in anger and busy sustaining himself with energy from the Sanzu River. Arachnitor arrived at the Junk of Master Xandred and came to Octoroo. In his desire for power Arachnitor demanded Octoroo to help him overthrow Xandred and Octoroo, greatly fearing him, reluctantly agreed. Arachnitor decided to usurp Xandred's throne by sealing Xandred and for this plan he ordered Octoroo to kidnap Jayden and obtain the Sealing Symbol that can seal the Nighloks away. Arachnitor, Octoroo, and an army of Moogers attacked the temple of the Tengen Gates, when the Power Rangers arrived to defend the guards of the temple, who were their friends, including Daisuke, in their goal to find the Black Box in hopes of stopping the Sanzu River. Octoroo poisoned the team's drinks and Jayden took a sip and became sick. His friends morphed and the Rangers battled Moogers. Meanwhile, Antonio came to Deker, not knowing about his identity, and competed with him in cooking. But the Rangers called Antonio and he left Deker. After defeating the Moogers, the Rangers fought Arachnitor and were quickly outmatched. Arachnitor used his claws and web, as well as energy attacks in battle which he easily defeated the Rangers with. Meanwhile, Octoroo came to Jayden and asked Red Ranger to give him the Sealing Symbol, even offering an antidote in exchange for the spell. Then Antonio arrived and battled Octoroo, but Deker arrived and kidnapped Jayden, much to Antonio's shock. When Antonio returned to his friends, they were already heavily injured and Arachnitor was laughing, but suddenly Xandred dragged him back to the Netherworld. As punishment for his betrayal, the Nighlok leader transferred a massive amount of energy gathered from the Sanzu River into the traitor, mutating him into a mindless Nighlok. Tvicon.png TV STORY-The Tengen Gate

After his mutation, he went to Earth to destroy the Rangers. The Rangers were overwhelmed by him and his energy discs but he was eventually taken down by the Quintuple Slash with Antonio powering it up. However, giant Moogers (possibly sent by Octoroo or Xandred) arrived due to being a more immediate threat to the city. The Rangers destroyed them first, but by then, Arachnitor has already escaped back to the Netherworld. Tvicon.png TV STORY-Boxed In

Arachnitor returns in Super Samurai sometime after leaving footprints in a puddle of Sanzu River water, making it known that a Nighlok is staying in our world without drying out by using that puddle. He is first seen terrorizing a suburban area by the Rangers and puts up a good fight until he escapes again from the Rangers by stepping on the air.

The Rangers follow him to what it seems to be an abandoned worksite with an area covered in puddles of Sanzu River Water with some back-up of Moogers. Although his sidekicks are defeated, he easily trashes the Rangers until Antonio gives Jayden the Black Box, enabling Jayden to go into Super Samurai Mode. Jayden and the monster battle, but the Red Ranger overwhelms Arachnitor, destroying the monster with a Super Blazing Strike. Arachnitor grew giant, raising some Moogers and Spitfangs to giant size as well, to assist him him in battle against the Samurai Megazord and Claw Battlezord East. The tide of the battle is once again turned when the Antonio tells Jayden to unleash the full power of the Black Box, forming the Claw Armor Megazord. The new Megazord overwhelms a crowd of Moogers, and then promptly destroys the rest with its Double Katana Strike. Though only Arachnitor and two Spitfangs remained, the Megazord had taken severe damage from the blasts. Seeking to end the fight, the Rangers summoned the Tigerzord, Swordfishzord, Beetlezord, and Octozord to form the Samurai Battle Cannon. However, because of the amount of Symbol Power it required to use, they had to withstand two rounds of Spitfang fireballs. Once this was done, the Rangers locked onto three monsters and fired the cannon, destroying Arachnitor and the Spitfangs once and for all with the Battle Cannon Blast.Tvicon.png TV STORY-Super Samurai (episode)


At first Arachnitor was cunning, devious, sneaky and perfidious Nighlok, who desired for power and wanted to overthrow Master Xandred at any cost. He served Master Xandred at first but then betrayed him and decided to usurp him and become the ruler of Nighloks himself. Arachnitor is a notorious Nighlok and is greatly feared by all other Nighloks, including Octoroo. He considered himself a brave and intelligent monster but after being punished and mutated by Xandred, he became a mindless and violent brute, even more cunning and devious in his goal to destroy the Rangers.

Powers And Abilities

General Power

  • Incredible Jumper: Arachnitor can jump high enough from one place to another.
  • Hand to Hand Combat: Arachnitor is extremely good at hand to hand combat, easily being able to overwhelm four Rangers.
  • Levitation: Arachnitor can levitate to move away from his enemies. He later used it to avoid the blades of all four Rangers before attacking them with a spin attack in his old form. Arachnitor can take some extremely powerful hits. Blasts from Kevin's Hydro Bow, which would later destroy Rhinosnorus, merely knocked him over.
  • Enlarging: Like all other Nighlok, Arachnitor can enlarge himself after being defeated.
  • Strength: Arachnitor is one of the strongest monsters in the series, knocking down the Rangers with single slashes from his pincers and being able to take Jayden's Spin Sword out of its Fire Smasher mode just by blocking it. When leaping at the Rangers, a single swing of his pincers knocked back Mia. A single strike of his claws on both girls easily knocked them down.
  • Nigh-Invulnerability: Arachnitor is nigh invulnerable, displaying impressive feats of immunity such as when he was completely unfazed by a red energy slash from Jayden's Spin Sword and later survived the Quintuple Slash (empowered by Antonio) without getting a scratch. Even multiple slashes from Jayden's Super Spin Sword with minimal reaction which means that only Super Samurai Mode and the Claw Armor Megazord's Samurai Battle Cannon can harm him or destroy him.
  • Gap Teleportation-Arachnitor can transport himself into the Netherworld using gaps to escape from a battle.

Normal Form

  • Spin Attack: Arachnitor can very easily spin around and race forth, rapidly lashing his blades out at his enemies as he goes. This is one of his most powerful attacks and could easily take down Mia, Emily, Mike, and Kevin.
  • Web Spit: Arachnitor can fire red energy from his mouth that can turn into webbing. It was strong enough to restrain Mia and Emily.
    • Electrocution: Arachnitor can charge up his webs with red lightning to electrocute his enemies.


  • Claw Blades: Arachnitor has sharp curved red claw-like blades on his arms to use in combat.
    • Energy Slashes: Arachnitor can release red energy slashes from his claw blades. These were powerful enough to hurt Kevin and Emily and send Mia and Mike flying while demorphing all of them.

Super Form

  • Lightning Generation: When first confronted by the Rangers in his second form, Arachnitor was able to unleash devastating red lightning from his body that caused large explosions and made the Rangers cringe.
  • Tentacle Whiplash: After the failure of his lightning attack, Arachnitor was able to shoot forth red tentacles from his torso sharp enough to explosively knock down all four Rangers present.
    • Tentacle Wrapping: As shown during his final battle, Arachnitor can use his tentacles to entangle his enemies and render them helpless on the ground.
  • Chest Energy Blasts: Arachnitor can fire red energy blasts from the eyes on his chest as shown when Jayden says "This just got a lot tougher, I'd better backpedal."
  • Energy Cutters: Arachnitor can fire pink energy cutters from the mouth on his torso. These are his strongest attacks because they easily wiped out all six Rangers.


  • Pincer Claws: Arachnitor's claw blades have been replaced with razor sharp pincer-like claws that can cause small fiery explosions every time they hit the Rangers.
  • Spitfangs: During his final battle, whilst giant, Arachnitor used two Spitfangs to shoot fireballs at the Rangers by forcing back their heads to spew out their attacks.

Behind The Scenes



  • Arachnitor is one of the strongest monsters in Samurai and maybe the entire franchise, being able to nearly kill four of the Rangers even in his original form and was only defeatable using Super Samurai Mode. The only reason that he initially left was because Xandred forced him to leave. He was so powerful that even Octoroo was scared enough to follow along with his plans and Xandred himself was clearly threatened by his power seeing as he went out of his way to deal with this rebellious Nighlok.
  • Arachinitor is one of the extremely few monsters who is not destroyed in the same season. He debuts in Samurai, but is not destroyed until Super Samurai a year later.
  • It is unknown if Arachnitor had any interaction with Serrator in A Crack in the World.


See Also

Power nav icon.png Icon-samurai.png Power Rangers Samurai & Power Rangers Super Samurai Icon-prss.png
Jayden Shiba - Kevin - Mia Watanabe - Mike - Emily - Antonio Garcia - Lauren Shiba
Samuraizer - Samurai Morpher - Black Box - Power Discs - Spin Sword - Mega Blade - Fire Smasher - Hydro Bow - Sky Fan - Forest Spear - Earth Slicer - Barracuda Blade - Shark Sword - Bullzooka - Mega Mode - Super Mode - Super Mega Mode - Shark Attack Mode - Mega Shark Mode - Shogun Mode - Samurai SUV
Mentor Ji - Farkas Bulkmeier - Spike Skullovitch - Eugene Skullovitch - Cody - Scott Truman
Zords and Megazords
Lion FoldingZord - Dragon FoldingZord - Turtle FoldingZord - Bear FoldingZord - Ape FoldingZord - BeetleZord - SwordishZord - TigerZord - OctoZord - Samurai ClawZord - LightZord - SharkZord - BullZord
Samurai Megazord - Beetle Blaster Megazord - Swordfish Fencer Megazord - Tiger Drill Megazord - Samurai Battlewing - Battlewing Megazord - Octo Spear Megazord - Claw Battlezord - Claw Armor Megazord - Samurai Battle Cannon - Light Megazord - Samurai Shark Megazord - Bull Megazord - Samurai Gigazord - Samurai Lightzord - Samurai Shark Gigazord
Master Xandred - Octoroo - Serrator - General Gut - Moogers - Spitfangs - Furry Warts - Papyrox
Deker - Dayu
Venjix Computer Network: Professor Cog - Grinders
Tooya - Scorpionic - Rofer - Doubletone - Dreadhead - Negatron - Yamiror - Madimot - Desperaino - Robtish - Vulpes - Steeleto - Antberry - Splitface - Arachnitor - Rhinosnorus - Sharkjaw - Sergeant Tread
Armadeevil - Switchbeast - Eyescar - Crustor - Skarf - Duplicator - Grinataur - Epoxar - Maldan - Trickster - Pestilox - Fiera - Gigertox - Gred
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