Aired on 03/18/2018

ActorRole
Jeremy Shada Jeremy ShadaFinn the Human
John DiMaggio John DiMaggioJake the Dog
Tom Kenny Tom KennyIce King
Olivia Olson Olivia OlsonMarceline the Vampire Queen
Dee Bradley Baker Dee Bradley BakerCinnamon Bun
Hynden Walch Hynden WalchPrincess Bubblegum
Pendleton Ward Pendleton WardLumpy Space Princess
Niki Yang Niki YangBMO / Lady Rainicorn
Steve Little Steve LittlePeppermint Butler
Polly Lou Livingston Polly Lou LivingstonTree Trunks
Jessica DiCicco Jessica DiCiccoFlame Princess
Maria Bamford Maria BamfordSlime Princess / Additional Voices
Niki Yang Niki YangBMO