Finn

Jeremy Shada

Jake

John DiMaggio

Ice King (voice) / Flying Lettuce Brother (voice)

Tom Kenny

Princess Bubblegum

Hynden Walch

Lumpy Space Princess (voice)

Pendleton Ward

BMO / Lady Rainicorn (voice)

Niki Yang

Tree Trunks (voice)

Polly Lou Livingston

Goliad

Wendy Linehan

Princess Cookie

Donald Faison

Flame Princess

Jessica DiCicco

Marceline

Olivia Olson

Dream Warrior

Matthew Broderick

The Elder

Jonathan Katz

Barb

Susie Essman

King Worm

Erik Estrada

Stormo

Henry Linehan

N.E.P.T.R./Dream BMO

Andy Milonakis

Ricardio

George Takei

The Farm

Tom Gammill

Hunson Abadeer/Evil Marceline/Demon

Martin Olson

The Bear/Candy Person

Eric Bauza

Death/Grod

Miguel Ferrer

Ed/Bird 1

Bobcat Goldthwait

Immortal Maize Walker

Gregg Turkington

Prince Huge

Brian Doyle-Murray

Mr. Cupcake

Dee Bradley Baker

Candy Nanny

Jill Talley

Charlic's Dad/Demon

Steve Agee

The Train

Dana Snyder

The Lich

Ron Perlman

Marauders

Kent Osborne

Billy

Lou Ferrigno

Torcho/Flame Soldier 2/Flame Citizen

Maria Bamford

Mr. Pig

Ron Lynch

Earl of Lemongrab (voice) / Lemongrab 2 (voice) / Starfish Martian (voice)

Justin Roiland

Grob

Melissa Villaseñor

Dementor

Bryan Kopta

Finn's Mom

Ming-Na

Peppermint Butler

Steve Little

Marauders

Cole Sanchez

Cuber (voice)

Emo Philips

Young Marceline (voice) / Candy Kids (voice) / Jamaica (voice)

Ava Acres

Flame King

Keith David

Toughy/Blombo

Max Charles

Polly Lou Livingston

Furnius/Jalapeño Pepper/Flame Soldier 3

Paul F. Tompkins

Prismo (voice)

Kumail Nanjiani

Cole Sanchez

Breezy (voice) / Blacksmith / Scorpion (voice)

Ashly Burch

Fionna

Madeleine Martin

Cake

Roz Ryan

Jake Jr (voice) / Jack Jr (voice)

Kristen Schaal

Tv (voice)

Dan Mintz

Banana Man

'Weird Al' Yankovic

Party Pat / Rap Bear / Party Splat

Andy Samberg

Prince Gumball

Neil Patrick Harris

Director

Larry Leichliter

Director

Patrick McHale

Director

Masaaki Yuasa