13 Episodes
The Wild HuntEpisode 1
Always BMO ClosingEpisode 2
Son of Rap BearEpisode 3
Bonnibel BubblegumEpisode 4
SeventeenEpisode 5
Ring of FireEpisode 6
Marcy & HunsonEpisode 7
The First InvestigationEpisode 8
BlenanasEpisode 9
Jake the StarchildEpisode 10
Temple of MarsEpisode 11
GumbaldiaEpisode 12
Come Along With MeEpisode 13
Cast of Adventure Time
Pendleton WardLumpy Space Princess (voice)
Olivia OlsonMarceline the Vampire Queen (voice)
Jeremy ShadaFinn the Human (voice)
John DiMaggioJake the Dog (voice)
Tom KennyIce King (voice)
Hynden WalchPrincess Bubblegum (voice)
Niki YangBMO / Lady Rainicorn (voice)
Polly Lou LivingstonTree Trunks (voice)
Justin RoilandEarl of Lemongrab (voice)
Ava AcresYoung Marceline (voice)
Ashly BurchBreezy (voice)
Kumail NanjianiPrismo
Madeleine MartinFionna
Roz RyanCake
'Weird Al' YankovicBanana Man
Andy MilonakisNeptr
Andy SambergParty Pat / Rap Bear
Neil Patrick HarrisPrince Gumball
Mark HamillFear Feaster
M. Emmet WalshCosmic Owl
Lou FerrignoBilly
Kyla Rae KowalewskiMe-Mow
James UrbaniakRat King / Leaf Beard
George TakeiRicardio
Thurop Van OrmanKent
Kent OsborneBounce House Princess
Donald GloverMarshall Lee
Grey DeLisleIce Queen
Ako CastueraCanyon
Laura SilvermanEthel Rainicorn
Henry RollinsBob Rainicorn
John HodgmanDJ Plop Drops
Paul ReubensGnome Ruler/Dancing Bug (voice)
Brian Doyle-MurrayPrince Huge
Alan OppenheimerDarren the Ancient Sleeper/Sun (voice)
Beau BillingsleaThe Moon (voice)
Eric BauzaButtersotch Butler (voice)
Willow SmithBeth
Sean GiambroneShermy
Brian BaumgartnerGeorgy / Private
Toby HussBooboo / Commander
Kate MicucciWendy
David FergusonLifeguard
Hannibal BuressFlame Prince
Crispin FreemanTurtle Prince
Peter SerafinowiczLumpy Space Prince
Elle NewlandsButterscotch Butler
Matthew BroderickDream Warrior
Dan MintzT.V.
Bert YounLee
Fred StollerRoy
Donald FaisonPrincess Cookie
Kay LenzBird Woman
Dee Bradley BakerMr. Cream Puff / Mr. Cupcake / Chet (voice)
Maria BamfordManfried / Chocoberry / Candy Corn Girl (voice)
Jackie BuscarinoEclair Boy (voice)
Steve LittleZombie Candy Heart / Peppermint Butler / Gumball Guardian #2 (voice)
Mark ProkschJohnnie