This article is about a/an episode in Kamen Rider Decade.

Warning: Kabuto Running Amok (警告:カブト暴走中 Keikoku: Kabuto Bōsōchū) is the sixteenth episode of Kamen Rider Decade, following the events of the movie Cho Kamen Rider Den-O & Decade Neo Generations: The Onigashima Warship. It is the first part of the World of Kabuto arc.


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After helping the DenLiner gang in the past, Tsukasa and company begin their venture in the World of Kabuto. Posing as a ZECTrooper, Tsukasa is deployed to aid Bright Troopers in the containment of a Worm as Kamen Riders Gatack and TheBee manage to exterminate it with the unseen aid of Kabuto. Soon after, Tsukasa brings Arata to the Studio to explain about his world, only to find a Worm had mimicked Tsukasa's form.

After Natsumi uses the pressure point to expose one of the Tsukasas as a Worm, Decade fights it before it attacks a girl and is destroyed by Kabuto. Deciding to investigate the girl Mayu, they host a photo shoot for her, and Natsumi learns of Mayu's older brother who was supposedly killed by Kabuto. At ZECT's headquarters, TheBee's user, Sou Otogiri, tells Arata that the final prepation for the plans to capture Kabuto are nearly done. Tsukasa talks with Mayu more about her brother after attempting to help at her grandmother's oden shop, the Heaven House, and when walking back to the Hikari Studio they are attacked by a Geophilid Worm. Tsukasa destroys it as Kuuga Pegasus Form, and is then attacked by TheBee and Gatack.

Decade attempts to use Den-O's powers against the Riders, but learns to his dismay that the cards only cause him to perform the forms' trademark phrases, not attacks. Decade is eventually assisted by Diend who fights Gatack to gain his Clock Up system while TheBee and Decade battle, eventually becoming Faiz in Axel Form to match TheBee's Clock Up. When Decade realizes Mayu is in the same area being attacked by Worms, he goes off to save her but is intercepted by an attack from TheBee.

Just as TheBee's stray shots are within inches of Mayu, Kabuto arrives to save her from both the attack and the Worms, disappearing as everyone's transformations end. However, when Mayu sees Sou, she recognizes him as her brother.

Rider Cards

  • Cards Used:
    • Kamen Rider Decade:
      • Kamen Ride: Decade, Kuuga, Den-O, Faiz
      • Attack Ride: Ore Sanjou!, Kotaewa Kiite Nai
      • Form Ride: Kuuga Pegasus, Faiz Axel
      • Final Form Ride: N/A
      • Final Attack Ride: N/A
    • Forms:
      • Decade, Decade Kuuga Mighty Form, Decade Kuuga Pegasus Form, Decade Den-O Sword Form, Decade Den-O Gun Form, Decade Faiz, Decade Faiz Axel Form
    • Kamen Rider Diend:
      • Kamen Ride: Diend, Riotrooper
      • Attack Ride: Invisible
      • Final Form Ride: N/A
      • Final Attack Ride: N/A


Guest stars

Suit actors



Nine Worlds #8: Kabuto


  • When Decade is about to transform into Den-O, the card is seen onto his left hand. However, during the next skit when he inserts the card into the Decadriver, he does it with his right hand.
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  • When Decade place Den-O's Attack Ride card on the Decadriver, it indicates Diend, besides Decade.
    • However, when using the Attack Ride: Kotaewa Kiite Nai, it now indicates Decade.

DVD releases

Decade DVD Vol 4

Kamen Rider Decade Volume 4, DVD cover

Kamen Rider Decade Volume 4 features episodes 14-17: Super Den-O Beginning, Here Comes Super Momotaros!, Warning: Kabuto Running Amok and The Grandma Way of Taste. [1]

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Kamen Rider Decade Box, Blu-ray cover

Blu-ray Box comes with all 31 episodes.


External links

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