Meli Povenmire

Gretel (voice)

Michael Cimino

Kevin (voice)

Beck Bennett

Hamster (voice)

Joey King

Fred (voice)

Matt Jones

Dave (voice)

Carolina Ravassa

Carolina (voice)

Romi Dames

Hiromi (voice)

Liza Koshy

Veronica Hill (voice)

Priah Ferguson

Bailey (voice)

Dan Povenmire

Dr. Doofenshmirtz (voice)

James Adomian

Rodney Thunderpants (voice)

Phil LaMarr

Professor Exclamation (voice)

Casey Hamilton

Mr. Chabner / Van Dyke (voice)

Brock Powell

Lyle (voice)

Alyson Stoner

Lauren (voice)

Michael-Leon Wooley

Roman (voice)

Betsy Sodaro

Coach Haggerty (voice)

Karina

La Cebolla (voice)

Eric Bauza

CopyCat (voice)

Thomas Sanders

Neighslayer (voice)

'Weird Al' Yankovic

Wacko Wally (voice)

Carlos Alazraqui

The Luchador (voice) · Luchador (voice)

Cree Summer

Librarian (voice) · Ms. Weems (voice)

Dee Bradley Baker

Otter (voice)

Khary Payton

Amplifier (voice)

John DiMaggio

X-Terminator (voice)

Adam Rose

The Earworm (voice)

Pamela Adlon

Nordle (voice)

Camryn Grimes

Record Scratch (voice)

Lucas Neff

Billy (voice)

Diedrich Bader

Arthouse (voice)

Karalynn Dunton

Belle (voice)

Stephen Root

Jeff Strawberry (voice)

Richard Kind

Tchotchke (voice)

John Hodgman

Micromanager (voice)

Flula Borg

Raul (voice)

Danielle Threet

Inga the Ice Queen (voice)

Tessa Skara

Itsy Bitsy (voice)

Debra Wilson

Mary Mitosis (voice)

John Milhiser

Chad Goldenboy (voice)

Kyle Mooney

The Flake (voice)

Chris Diamantopoulos

Crooner (voice)

Kate Micucci

Kelly (Voice)