Let's see, Demon Lord is part of the harem, and the big bad at the bottom of this hidden labyrinth is supposed to be a world eating Serpent, so why did this guy just get the generic Demon makeover, with bat wings and horns sprouting from his eyes?
I'd say "That can't be good", except that I'm pretty sure that between Dick and his Master that he'll still be dispatched pretty handily. But this sure as hell doesn't point to good things later on down the line.