- Toby Thompson as Finn
- Mr. Bill Thompson as Duke of Nuts
- Mrs. Jane Thompson as Princess Bubblegum
- Stacey Thompson as Ice Cream Lady
- Dr. Noseworthy as Donut Guy
- Helvetica Black as Marceline
- Colbert "Cole" Black as Flambo
- Mr. Carbon Black as Ice King
- Loogie Short as The Lich
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