- Marjorie Winfield as Fionna
- William 'Bill' Sherman as Duke of Nuts
- Wesley Winfield as Finn
- George Winfield as Jake
- Alice Winfield as Princess Bubblegum
- Stella as Marceline
- Chester Finley as Cinnamon Bun
- Renee LaRue as Lady Rainicorn
- John H. Harris as Donut Guy
- Ronald 'PeeWee' Harris as Mr. Cupcake
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