These are disturbingly wonderful.
Well, that MLP community (I ended up mostly on DeviantArt) is ... um ... interesting , in a variety of ways. Fortunately I discovered there's a whole steampunk subgenre of MLP art, and that helped narrow things down neatly for my search. Because if we have a Jason pony ... It's pony Alycia Chin -- "Payback is MAGIC!" ( source ) Runners-up, who all had aspects I really liked: 1 2 3 4