BMO narrates "The Great Gum War" in which Finn, Jake, Marceline, PB and the Candy Kingdom go to war against Gumbald and his army that will determine the fate of Ooo once and for all.
as Finn the Human (voice)
as Jake the Dog/Banana Guards/Additional Voices (voice)
as Princess Bubblegum (voice)
as Ice King/Simon Petrikov/Gunter/Ice Thing/King Man/Gumbal Guardian #1 (voice)
as Marceline (voice)
as BMO/Lady Rainicorn (voice)
as Lumpy Space Princess/Shelby/Banana Guards (voice)
as Gumbald/Punch Bowl (voice)
as Fern/Grass Demon (voice)
as Earl of Lemongrab (voice)
as Shermy (voice)
as Beth (voice)
as Jermaine (voice)
as Aunt Lolly/Slime Princess (voice)
as Betty Grof (voice)
as Flame Princess (voice)
as N.E.P.T.R (voice)
as Cinnamon Bun (voice)
