Devilis

Devilis (デビリス, Debirisu) is a character in the Shikkakumon no Saikyokenja series.

Biography
Devilis was a Demon who worked with Elhart and the other Demons who had infiltrated Kingdom of Eis, in order to weaken it by posing as the "Magical Chosen One" and promote the uses of Incantation Magic and denounce the battle centric Crests, which lowered the battle potential of the Humans.