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.

However, during his fight with Matthias Hildesheimer, his true identity as a demon was revealed in public and killed by Matty.