His Humanoid body just avatar. his real body is the mask. can take over body whose wear the mask. even you can destroy the mask the several Mask as reserve.the type enemies that you dont want because even you kill him he wont die. Nemesis of @Satan that said "if you kill people they die" a boss of the demon king army, the duke of hell that commands the devils! The arch devil that could see through anything in the world, Vanir!(Kono Subarashii Sekai ni Shukufuku o!)