Cast[]
Version 1[]
- Twilight Sparkle as James P. “Sulley” Sullivan
- Spike as Mike Wazowski
- Apple Bloom as Boo
- Princess Luna as Randall Boggs
- King Sombra as Henry J. Waternoose III
- Rarity as Celia Mae
- Trixie as Roz
- Snails as Needleman
- Snips as Smitty
- Discord as Fungus
- Derpy Hooves as Jerry
- Shining Armor as The Abominable Snowman
- Big McIntosh as Peter "Claws" Ward
- Princess Celestia as George Sanderson
- Rainbow Dash as Charlie
- Twilight Sparkle as Mr. Bile
- Fluttershy as Ms. Flint
- Starlight as Waxford
- Citizens of Ponyville as Monstropolis Citizens
- Princess Cadence as Rex (In Outtakes)