This is my interpretation of Nightmare Dusk, an evil version of Twilight Sparkle. It started out as an art class project to turn an adorable character into something monstrous, and then I decided to vectorize it. It may have improved a bit along the way (major thanks to cardslafter, astralryft, Doc Crowl, and Ponitoss). I would have added wings, but then I realized I had no idea how to draw batpony or changeling wings.
 
Made entirely in Ponyscape, a free vector art program specialized for dealing with MLP-inspired art. Feel free to use and abuse this pic however you want, just let me know what you do with it.
 
Hours to make: Far too many to count reliably.