is a manifestation-type demon who formed a contract with Shinoa Hīragi, and became her Cursed Gear. While possessing Shinoa, he also concurrently possesses Tenri Hīragi and Kureto Hīragi. Historically, he has possessed every head of the Hīragi Family until he primarily possessed Shinoa completely. He's one of the main antagonists in the series.

He is later revealed to be the former First Progenitor of the vampire race, Sika Madu (シカ・マドゥ Shika Madou?), who disappeared a thousand years ago until turning up again as an angelic-looking demon