"From Kamen Rider Hibiki"
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Bakegani ( バケガニ ):
The giant type makamou with the feature of a swimming crab with acid-shooting barnacles on its back, coloring in green, red, blue, black. The first Bakegani sighted attacked people near its saltwater territory at Boso with Hibiki having a hard time fighting a Makamou due as String-instrument Oni are better suited. But Hibiki managed to destroy the Bakegani with his Kaen Renda form. A "freshwater" Bakegani was fought at Nikko in episode 15, lacking barnicles as it grew up on the river. It attempted to kill a weaken Zanki, be ended up destroyed by Zanki's Raiden Gekishin. During episode 19, Bakegani sightings increased with Todoroki defeating three in Kamakura, Hakone, and the Miura Peninsula with his Raiden Gekishin. He was briefly overpowered by a red Bakegani in Oarai, but managed to destroy it with Raiden Gekishin. A river-type appeared at Kazuno in episode 26, destroyed by Todoroki's Raiden Gekishin. During the start of Orochi, a red Bakegani appeared at Miura. While the first was destroyed by Hibiki Soukou's KiShin Kakusei and Ibuki Shippuu Issen, four more appeared and corner them. The three Bakgani were destroyed when Zanki once more assume being a Oni and used his Raiden Zanshin to destroy two of them while Hibiki and Ibuki finished the othet two off. A golden Bakegani appears at Sano, destroyed by Todoroki's Raiden Gekishin. A Bakegani appeared during the Waring States Era as depicted in the movie, fighting Todoroki until it was killed by Kirameki's Retsuban, Nishiki's Ressetsu and Habataki's Rekkuu.

Douji ( 童子 ) & Hime ( 姫 ) of Bakegani:
They were raising a Bakegani at Boso, able to secrete acid and alter their right hands into crab-claws. While the Douji was destroyed by Zanki, the Hime later attacked Hibiki when he was sent to finish the job, killing her with his Onibi followed by a punch. Another set appeared at Niko at episode 15, raising their freshwater child until Zanki and Todoroki fought them. When the Hime was killed by Zanki's Retsurai, the Douji ran for it with the two Oni following, leading them into a trap only to be killed by being impaled bt Zanki's guitar. Todoroki fought reddish pair in episode 19, killing them both with one hit from his Retsurai. Another pair appear in episode 26, with the Douji destroyed by Todoroki's RaigekiKen and the Hime by a kick-version of the attack.