Devaul

Is the main antagonist of the series. A demon who possessed Yae in the forest of Al (Owl) and from that moment it was proposed to take full control of Doll Kingdom and later revealed his true form as an enormous dragon. He wants to kidnap Licca. The Doll Knights battled Devaul to protect Licca and her family and friends. With a help from the god Al, Devaul was destroyed forever.

(Source: Wikipedia)