Avos Dilhevia
アヴォス・ディルヘヴィア
About
He is the one who claims to be the Demon King of Tyranny and has brainwashed the demons of the current era.
(Source: Maou Gakuin Wiki)
Spoiler Warning: Click to View
It is later revealed that Avos Dilhevia is actually Lay Glanzudlii, the reincarnation of hero Kanon.

