GuldThunder

The Sectio Worm is a Mirror Monster and an antagonist in Kamen Rider Kabuto.

He was portrayed by Yoshimune Kato.

Kamen Rider Kabuto
GuldThunder devoured Yuichi after Yuichi turned down Shiro Kanzaki's contract offer. Kanzaki later ordered GuldThunder to go after Kamen Rider Raia, only for it destroyed by Raia's Hide Venom.

Kamen Rider Decade
In the World of Ryuki, GuldThunder is briefly seen fighting against Kamen Rider Ryuki alongside Omegazelle and Zebraskull Bronze during the Kamen Rider Trial.

Powers and Abilities
It can attack with its retractable tail and use fire attacks.

Trivia
It was originally designated to be the Contract Monster of Yuichi in concept arts in the event that Yuichi accepted Kanzaki's offer.