Yamaarashi-Roid is a Badan Empire porcupine Roid and a supporting antagonist in the TV special Birth of the 10th! Kamen Riders All Together.
Kamen Rider ZX
Yamaarashi-Roid took part in the operation to ensure the delivery of the Badanium 84 to Badan's Space Break System. However, Kamen Rider X interfered in the operation to fight Yamaarashi-Roid and managed to halt the delivery of the substance. Later, when the Riders launch an assault on Badan's Japanese base, Yamaarashi-Roid faces Kamen Rider 1 and is destroyed when 1 knocks him into Dokuga-Roid.
Heisei Rider vs. Showa Rider: Kamen Rider Taisen feat. Super Sentai
Yamaarashi-Roid reappears as one of the commanders of the Underground Empire Badan, leading their Combat-Roids in various attacks.
When the Heisei Riders and Showa Riders come together to stop Badan, Yamaarashi-Roid is destroyed by Armored Riders Baron Mango Arms, Ryugen Kiwi Arms, and Zangetsu Shin.
Kamen Rider Ghost
Yamaarashi-Roid was later revived as a member of Shocker. He participated in the scheme to revive Ambassador Hell, but was destroyed by Zyuoh Eagle and Kamen Rider Ghost Grateful Damashii.
Kamen Sentai Gorider
Yamaarashi-Roid was one of the monsters who were a part of the endlessly respawning army of Shocker kaijin in the Game World created as part of Kuroto Dan's plan to revive himself.
After Kazuma Kenzaki destroyed the Game World with his Joker powers, Yamaarashi-Roid and the other kaijin were summoned by Kamen Rider Genm Totema to do battle against the newly assembled Kamen Sentai Gorider and were ultimately wiped out.
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