User blog comment:DaSuperNaturalist007/Supernatural- The Ideas-/@comment-5619706-20131103175935

Eve's true form in Purgatory with basilisk eyes, medusa hair, draconic wings and a manticore tail.

Other than that, I would not want to see any Big Bads that have previously appeared. I would rather have new creatures. Problem is, I just couldn't think of new beings that would pose much threat, since most of what we have left are little players, with the possible exception of the Knight(s) of Hell. Bartholomew seems to be being built up as another Naomi, but frankly I don't think he's that special. Not even Naomi herself seemed particularly powerful in terms of abilities--most of her power appeared to stem from her organizational position.