[@KatherinWinter]
	Etherious I believe is a special kind of demon if I remember what I read right. In the t.v. series I think there is only one Etherious and it was a big reveal about what/who it is, which it's only mention who it is by the big bad guy, the dark magi who created all the demon items and even controls the demons themselves. along with other evil. I can spoil it if you don't really care for the show. I've been slowly getting back into it myself.