Finn the Human (voice)

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

Fionna

Madeleine Martin

Marceline the Vampire Queen (voice)

Olivia Olson

Young Princess Bubblegum

Isabella Acres

Pan/Forest Cyclops

Kent Osborne

Cake

Roz Ryan

Flame King

Keith David

Hunson Abadeer/Tiny Goblin

Martin Olson

Jaybird

Rich Fulcher

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

Justin Roiland

Me-Mow

Kyla Rae Kowalewski

Paper Pete

Pete Browngardt

Banana Man

Al Yankovic

Cinnamon Bun/Spooky Laugh

Dee Bradley Baker

Grand Master Wizard/Weaponhead

Maurice LaMarche

Rag Wizard/Ash/Cherry Blossom Ghost

Steve Agee

Mr. Pig

Ron Lynch

Flame Princess/Flame People

Jessica DiCicco

Turtle Princess/Mildwin/Pagelings

Steve Little

Death/Skeleton 2

Miguel Ferrer

Rainy/Ham Sandwich

Melissa Villaseñor

Kee-Oth/Hot Dog Monster

Noah Nelson

Raggedy Princess/Ice Cream Bartender/Wormo

Maria Bamford

Breakfast Princess

Grey DeLisle

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

Ava Acres

Prince Gumball

Neil Patrick Harris

Shrub

Gregg Turkington

Pagelings/Moldos

Cloe Sanchez

Clarence/Muscular Ghost 3

Sam Marin

Susan Strong

Jackie Buscarino

Mr. Fox/Ant

Tom Herpich

Prismo (voice)

Kumail Nanjiani

Cuber (voice)

Emo Philips

Breezy (voice) / Blacksmith / Scorpion (voice)

Ashly Burch

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

Director

Larry Leichliter