Dejushashu

Dejusashu (アカギ) was a survivng Over Lord.

History
After founding a magic stone, he carved it into a ring and has the ability to use magic. He destroys a Roidmude after absorbing it’s knowledge, learning of Kamen Rider Mach and Kamen Rider Drive, sending Inveses after them. Kouta Kazuraba joins the battle, as Helheim Forest is under this protection. During their fight, Kouta calls in a showtime wizard named Haruto!

Dejusashu was later destroyed by combined efforts of Kamen Riders.