With this episode, Pinkie Pie, Fluttershy, Twilight Sparkle, and Rainbow Dash now each have had their respective evil counterparts of themselves - Pinkamena Diane Pie (usually in fan works), Flutterbat, Midnight Sparkle (in Equestria Girls), and "Pie-Hater" Dash. Applejack and Rarity both still don't have one.