Clarence

Spencer Rothbell

Clarence / Camden / Mavis (voice)

Tom Kenny

Sumo (voice)

Sean Giambrone

Jeff (voice)

Katie Crown

Mary / Ms. Baker / Ms. Shoop (voice)

Eric Edelstein

Chad (voice)

Roger Craig Smith

Belson / Percy (voice)

Skyler Page

Clarence / Mr. Reese / Nathan (voice)

Grace Kaufman

Chelsea (voice)

Donovan Patton

Mr. Reese (voice)

Damien C. Haas

Nathan (voice)

Joshua Rush

Breehn (voice)

John DiMaggio

Mel (voice)

Lea DeLaria

EJ (voice)

Brent Popolizio

Joshua (voice)

Audrey Wasilewski

Lucine (voice)

Tayler Buck

Courtlin (voice)

Chris Edgerly

Copernicus / Man in Window / Cashier (voice)

David Boat

Mayor (voice)

Mena Suvari

Cynthia (voice)

Christine Lakin

Tinona (voice)

Daniel DiMaggio

Brady (voice)

Nika Futterman

Sammy / Kid (voice)

Kirk Thornton

Buckey O'Neill (voice)

Tig Notaro

Sue (voice)

Dave Wittenberg

Old Man / Sparrow / Dodo (voice)

Dan White

Principal (voice)

Cynthia Kaye McWilliams

Cashier (voice)

James Arnold Taylor

Hershey (voice)

Kate Berlant

Ms. Julip (voice)

Madeleine McGraw

Rita (voice)

Bette Ford

Gale (voice)

Carlos Alazraqui

Sensei Carlos (voice)

Bob Bergen

Goldfish / Hot Dog Guy / Shop Keeper (voice)

Phil LaMarr

TV Narrator (voice)

Rick Zieff

Belson's Dad / Bald Man (voice)

Gunnar Sizemore

Commercial Kid 1 (voice)

Corey Burton

Hank (voice)

Kari Wahlgren

Old Lady / Pizza Shack Waitress / Customer (voice)

Jacqueline Obradors

Lupe (voice)

Aryan Simhadri

Jimmy Chakraborty (voice)

Hudson West

Sumo's Brother #1 / Sumo's Brother #2 (voice)

Fred Stoller

Clerk / Guy Arguing / Train Server (voice)

Ava Acres

Amy (voice)

Michael Leone

Asian Kid (voice)

Troy Baker

Troy / Keith Mack / Lazer Game Voice (voice)

Eva Bella

Little Girl (voice)

Emily Eiden

Sample Lady / Cashier Girl / Tina (voice)

Bob Joles

Manager / TV Announcer / Loudspeaker Voice (voice)

Stephanie Sheh

Debbie / Girl #1 / Kid #2 (voice)

Stuart Allan

Naked Kid (voice)

Hana Hayes

Jessica / Small Girl (voice)

Ruth Williamson

Ginsbot (voice)

Dave B. Mitchell

TV VO Announcer (voice)

Thomas Barbusca

Malakevin (voice)

Chris Cox

Zookeeper / EMT 1 (voice)

Jon Heder

Randy (voice)

Riley B. Smith

Sumo's Little Brother (voice)

Natasha Leggero

Nature Kate / Heida (voice)

Jason Marsden

Sumo / Brian / Belson (voice)

Tara Strong

Nurse Tacker / Tinia's Mom (voice)

Mckenna Grace

Tinia (voice)

Nick Pitera

Clarence Singing Voice (voice)

Maria Bamford

Dilliss (voice)

Jeff Bennett

Seymour / Rooster (voice)

Amy Sedaris

Ms. Donna-Joe Judley / Woman (voice)

Atticus Shaffer

Seabass (voice)

Charley Koontz

Glary / Teen (voice)

Jack Angel

Howard (voice)

Kylie Rogers

Lucy (voice)

Livvy Stubenrauch

Daughter (voice)

John Waters

Captain Tom (voice)

Alan Tudyk

Flight Attendant Dan (voice)

Greg Cipes

Tony (voice)

Brett Gelman

Mr. Mozer (voice)

Andy Milonakis

Frankie Do Dad (voice)

Kai Scott

Shop Boy #2 / Sumo's Brother #1 (voice)

Jodi Benson

Diana (voice)

Robin Atkin Downes

Fartholomew (voice)

Fred Tatasciore

Phil / Cronie (voice)

Jay Lay

Game Show Host (voice)

Bria Danielle Singleton

Bella (voice)

David Shatraw

Mr. Jones (voice)

Alison Fernandez

Little Girl (voice)

Cloris Leachman

Cloris (voice)

June Squibb

Rose (voice)

Gregg Turkington

Greg / Square Dad / Punk (voice)

Tim Heidecker

Tim / Teddy / Damien Dawson (voice)

Lauren Lapkus

Lauren / Kim / Square Mom (voice)

Peter Browngardt

Ham the Power Guy / Someone (voice)

Griffin McElroy

Announcer / Business Man (voice)

Jeannie Elias

Officer Moody (voice)

Brent Weinbach

JT (voice)

Jeff Witzke

Mike (voice)

Rachel Eggleston

Lauren (voice)

Cree Summer

Star (voice)

Michael St. Michaels

Fern (voice)

Dee Bradley Baker

Mr. Cookies / Barkbark / Duncan (voice)

Jenny Slate

Pipi / Cookie Mama Cashier / Beatrice (voice)

Reginald VelJohnson

Willy (voice)

Jessica Walter

Ma (voice)

Paul Dinello

Eugene the Mailman (voice)

Brendon Small

Video Store Clerk / Movie Narrator / Geraed Dukardin (voice)

Terry Gross

Deborah Cooper (voice)