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Guyros (ガイロス Gairosu) was a Kaiju that appeared in the TV series Ultraseven episode 42.

Subtitle: Octopus Monster (蛸怪獣 Tako Kaijū)



One day, two large ships blew up and were set aflame. After the UG tried to find an eyewitness that saw what happened, their luck ran short. However, some time later, the monster Guyros made himself known as he started attacking another large ship. The Ultra Guard arrived on the scene quickly and managed to kill Guyros by attacking him from the air and water. Little did anyone suspect that Guyros was only a pawn in the Nonmalt's plan. Guyros was revived by the Alien Nonmalt later that day after they started to attack a local harbor town with a very powerful submarine. Dan Moroboshi turned into Ultraseven and intercepted Guyros, but the creature proved to be a formidable adversary until the hero used the environment against him. Ultraseven used his Eye Slugger to slice off each of Guyros's tentacles after each dive, slowly making him incapable of fighting. Shortly into battle, Guyros became tired out and simply died. Ambassador of the Nonmalt


The original Alien Guyros concept with the description "The six arms (literally) have an eyeball on each of it to watch out for an enemy".

  • Guyros's design is based off of the silver prize winner of a contest to submit alien designs for Ultraseven, Alien Guyros (ガイロス星人 Gairosu Seijin). However, the suckers were originally meant to be eyeballs. Tepeto was the gold prize winner of the contest.
    • There was also Alien Elidus who shared concept with Guyros.
  • In the middle-to-late 1990s, footage of Guyros was used for the TNT, TBS and Cartoon Network show Cartoon Planet. Guyros footage was used to depict an alien in the recurring sketch entitled 'Messages from Outer Space' that would feature other Ultraseven Kaiju broadcasting to Space Ghost, Zorak and Brak on Cartoon Planet. In his featured message, he was called Barnacle Boy (with no relation to the SpongeBob SquarePants character), broadcasting from Denada 7 the Underwater City. He reappeared in another recurring sketch called 'Vacation Spots of the Universe', concerning a location advertised as Mr. Beak's Underwater Thrill Park.
  • The roars of Guyros are reused roars from the Daiei monster, Gyaos.
  • Guyros's roar would later be used for the Return of Ultraman kaiju, Arstron.
  • In the TNT dub, Guyros is referred to as a robot.
  • Guyros was one of the monsters that made up Belyudra's right arm.


Guyros, purple squidward.png
  • Height: 30 m
  • Weight: 10,000 t
  • Origin: Pacific Ocean seabed
Powers and Weapons
  • Adept Swimmer: Guyros can swim at medium speeds.
  • Tentacles: Guyros has six tentacled arms used for whipping and constricting foes.





Ultraseven Kaiju
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Heisei Ultraseven Alien Pitt | Eleking III | Alien Metron | Dinosaur | Alien Viyell | Alien Guts | Sulfas | Banderas | Alien Valkyrie | Daitekkai | Alien Galo | Alien Kyuloo | Alien Remojo | Bolajo | Dairyuhkai | Otohime | Rahakam Stone | King Joe II | Nonmalt | Zabangi | Dragonic Saucer | Alien Pegassa | Alien Godola | Neo Pandon | Alien Garut | Plant Life form | Gaimos
Ultraseven X Galkimes | Unidentified alien criminal | Alien Markind | Peginera | Alien Vo-Da | Alien Chamuda | The Soul of Light | Alien Vairo | Vadoryudo | Hupnath | Jyuujin | Saku | Grakyess | Mecha Grakyess