Cast[]
- Henry as Finn
- Cobby as Jake
- Roddy as Ice King
- Denzel as Beemo
- Summer as Lady Rainicorn
- Gertie as Princess Bubblegum
- Mimi Monstermouth as Marceline The Vampire Queen
- Harry as Chet
- Ivor as Mr. Cupcake
- Hugo as Starchy
- Milo as Cinnamon Bun
- Mr. Growl as Sir Slicer
- Fergus as Duke of Nuts
- Monsterdragon as Death
- Other Monster as Candy People
- Mini-Monsters as The Cuties and Goblins
- Kelly as Young Princess Bubblegum
- Monstertroll as The Lich
- Hunter as Donut Guy
- Izzy as Fionna
- Meg as Cake
- Frred L.O. Bluz Billy Bob and Terry (from Happy Monster Band) as The Marshmellow Kids
- Estelle as Ice Cream Lady
- Oscar as Flambo
- Roy as Choose Goose
- Roberto as Jeramine
- Irving as Muscle Prince
- Signor Roartonio as Donny