- Sgt. John Berlin as Finn
- Helena Robertson as Fionna
- Special Agent St. Anne as Jake
- Sgt. Freddy Ross as Beemo
- Margie Ross as Princess Bubblegum
- Sgt. John "J.K." Taylor as Choose Goose
- Chief Citrine as Duke of Nuts
- Travis as Donut Guy
- Bobby as Flambo
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