Kappa

The Kappa is a summer-type Makamou with the feature of a snapping turtle and a frog. It is able to grow a new head to replace the one it discharges from its body, morphing into a copy.

The Kappa ambushes Sabaki just finished off an its parents in Chichibu, defeating him easily. Hibiki prefers to fight Kappas on his own, due to personal reasons, assuming Kurenai mode to defeat the original and the copy it made. But another copy was formed at the last second and it attempted to escape from Hibiki in vain.

At first it places Hibiki at a disadvantage in the water due to gunk the Kappa shoots from its mouth, covering Hibiki's forearms and crystallizing. But Hibiki trained for such an event and managed to drive the Kappa out of the water to finish it off with his Shakunetsu Shinku no Kata, though chipping away at the hardened weights had side-effects for Hibiki's vocal cords.

During the start of Orochi, a pack of Kappa appeared at Higashichichibu, with the copies destroyed by Ibuki's Shippuu Issen while the original was to be killed by Todoroki's Raiden Gekishin, but was crushed by Otoroshi. A pair of Kappa emerge at Tatebayashi in 44, with one killed by Armed Hibiki'sKishin Kakusei, with the other killed by Ibuki's Shippuu Issen.

Some of the Kappa then appeared at Saitama, among the Makamou destroyed by Armed Hibiki's Kishin Kakusei.

In the World of Hibiki, the Kappa was the first Makamou that Tsukasa and company encountered before Asumu arrived to fight it. In the end, the Kappa was neutralized by Decade Kamen Ride: Kabuto using Attack Ride: Clock Up before being destroyed by his Rider Kick.

The Kappa, among many other revived monsters, was part of the Dai-Shocker army in the World of Decade that was fought and wiped out by a gathering of 25 Kamen Riders.

Trivia

 * TBA