- Michael "Mike" Newman as Finn
- Donna Newman as Fionna
- Morty as Jake
- John Ammer as Cinnamon Bun
- Theodore "Ted" K. Newman as Mr. Cupcake
- Trudy Newman as Princess Bubblegum
- Bill as Flambo
- Janine as Cake
- Stacey as Marceline the Vampire Queen
- Benjamin Newman as Choose Goose
- Kevin O'Doyle as Starchy
- and more
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