Agreed. You can’t recruit Durge as a companion, but there was a claim (I think in one of the Fextralife vids?) that someone (a dev?) had said that we might encounter them later in the game. I don’t think we know any more than that, but I guess it makes sense if it’s true that they’d be an antagonist of some sort.

"You may call it 'nonsense' if you like, but I've heard nonsense, compared with which that would be as sensible as a dictionary!"