My Little Pony/Monsters, Inc.

Cast

 * Princess Celestia as Sulley
 * Spike as Mike
 * Apple Bloom as Boo
 * Rarity as Celia Mae
 * The Great and Powerful Trixie as Randell Boggs
 * Discord as Mr. Watternose
 * Applejack as Roz
 * Fluttershy as Flint
 * Sweetie Belle as Bile
 * Snips (with Snails as an extra) as Fungus
 * Rainbow Dash and Scootaloo as Needleman and Smitty
 * Twilight Sparkle as Charlie
 * Mr. Cake as Jerry
 * Shining Armor as George
 * Gilda as Yeti