MLP Spook: Twilight Sparkle (werecat), Rarity (vampire), Applejack (ghost), Fluttershy (girl from The Ring), Rainbow Dash (Frankenstein's monster), Pinkie Pie (Jason Voorhees), Lyra Heartstrings (dullahan), Derpy Hooves (mummy)
Too Spookie: Big Macintosh (robot), Discord (artist problems), Shining Armor (changeling), ???? (witch)
Even Spookier: Princess Celestia (succubus), Princess Luna (lich), Princess Cadance (angel), Flurry Heart (Cthulhu)
We Be Spookin': Apple Bloom (werewolf), Sweetie Bell (demon), Scootaloo (vampire), Spike (grim reaper)
More spookness: Queen Chrysalis (goo), Snips (naga), Snails (dryad), Rumble (merpony)