Douketsu

Douketsu (Japanese: 洞潔 Douketsu) is an Rank S Yo-kai of the Oni tribe. He is known in his human disguise as Ganryuu Shimanouchi (Japanese: 島之内厳流 Shimanouchi Ganryū).

In Yo-kai Watch: Wibble Wobble, he's a Rank SSS Yo-kai of the Tough tribe. He also has the Shinma-inspirited form called Shinma Douketsu (Japanese: 真魔洞潔 Shinma Douketsu).