- Mordecai as Finn
- Rigby as Jake
- Bobert (from The Amazing Wolrd of Gumball) as Beemo
- Margaret as Princess Bubblegum
- Eileen as Lady Rainicorn
- High Five Ghost as Peppermint Butler
- Skips as Mr. Cupcake
- Muscle Man as Cinnamon Bun
- Pops as Starchy
- Benson as Lumpy Space Princess
- CJ as Flame Princess
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