Genki

Kamen Rider Genki (仮面ライダー弦鬼, Kamen Raidā Genki?) : Genki is a man rumored to be one of the first humans to have possessed the ability to become an Oni Kamen Rider, using a guitar as his weapon. In a single day, he defeated four Bakegani and Amikiri. He fought in the Chūbu region of Japan during the Edo period. His name means "Bowstring Demon."