Purgatory

Purgatory (煉獄 Rengoku): is a group of powerful Etherious that declared their indepence from the other demons over four centuries ago, their ambition is to create a world ruled by the Demon Race. Over the course of theses centuries, Purgatory has made several enemies as they've fought against both the humans and the demons alike, seeing anyone who would differ from their views as enemies that must be purged.