Mike Wazowski

Lee Insung

Voice

Thanasis Tsaltabasis

Mike Wazowski

Billy Crystal

Sulley

Kim Jin-tae

Voice

Antonis Loudaros

Sulley

John Goodman

Randy Boggs

Kim Ik-tae

Voice

Leonidas Kakouris

Randall Boggs (voice)

Steve Buscemi

Dean Hardscrabble

Lee Jin-hwa

Voice

Vina Papadopoulou

Dean Hardscrabble

Helen Mirren

Don Carlton

Tak Won-je

Voice

Kostas Triantafyllopoulos

Scott "Squishy" Squibbles

Peter Sohn

Don Carlton (voice)

Joel Murray

Terri Perry

Nam Do-hyung

Voice

Harry Veramon

Terri Perry

Sean P. Hayes

Terry Perry

Lee Ho-in

Terry Perry

Dave Foley

Art

Lee Jang-won

Professor Knight

Yoo Hae-mu

Art (voice)

Charlie Day

Johnny

Park Ji-hoon

Professor Knight

Alfred Molina

Snowman

Seo Munseok

Greek Council VP Brock Pearson

Tyler Labine

Chet

Sa Seongung

Johnny Worthington (voice)

Nathan Fillion

Young Mike

Um Tae-joon

Greek Council President Claire Wheeler

Aubrey Plaza

Chet Alexander (voice)

Bobby Moynihan

Young Mike

Noah Johnston

Mrs. Squibbles

Julia Sweeney

Mrs. Graves

Bonnie Hunt

Frank McCay

John Krasinski

Referee/Slug

Bill Hader

Carrie

Beth Behrs

Roz

Bob Peterson

Yeti (voice)

John Ratzenberger

Additional Voices (voice)

Lori Alan

Additional Voices (voice)

Carlos Alazraqui

Additional Voices (voice)

Jack Angel

Additional Voices (voice)

Bob Bergen

Ilja Richter

Reinhard Brock

Additional Voices (voice)

Gregg Berger

Additional Voices (voice)

Rodger Bumpass

Elyas M'Barek

Axel Stein

Additional Voices (voice)

Neil Campbell

Additional Children's Voices (voice)

Ava Acres

Additional Voices (voice)

Donald Fullilove

Additional Voices (voice)

Sherry Lynn

Additional Children's Voices (voice)

Aramé Scott

Dannah Feinglass Phirman

Additional Children's Voices (voice)

Joseph John Schirle

Additional Children's Voices (voice)

Kristen Li

Additional Voices (voice)

David Theune

Additional Children's Voices (voice)

Davin Ransom

Madison Rothschild

Additional Children's Voices (voice)

Raymond Ochoa

Additional Children's Voices (voice)

Calum John

Additional Children's Voices (voice)

Montse Hernandez

Additional Children's Voices (voice)

Mason Cook

Additional Children's Voices (voice)

Makenna Cowgill

Rob Riggle

Jennifer Tilly

Additional Children's Voices (voice)

Tyree Brown

J.B. Smoove

Additional Children's Voices (voice)

Jack Bright

Additional Children's Voices (voice)

Isabella Acres

Kelsey Grammer

Additional Voices (voice)

April Winchell

Ken Jeong

Frank Oz

Additional Voices (voice)

Colette Whitaker

Wojciech Paszkowski

Additional Voices (voice)

Jim Ward

Additional Voices (voice)

Marcia Wallace

Additional Voices (voice)

Tara Strong

Artur Barciś

Sylwester Maciejewski

Additional Voices (voice)

Mindy Sterling

Paweł Ciołkosz

Additional Voices (voice)

Joel Spence

Additional Voices (voice)

Betsy Sodaro

Eryk Lubos

Additional Voices (voice)

Patrick Seitz

Additional Voices (voice)

Dan Scanlon

Additional Voices (voice)

Jan Rabson

Additional Voices (voice)

Cristina Pucelli

Additional Voices (voice)

Jeff Pidgeon

Additional Voices (voice)

Dannah Phirman

Additional Voices (voice)

Donovan Patton

Additional Voices (voice)

Bret 'Brook' Parker

Additional Voices (voice)

Colleen O'Shaughnessey

Additional Voices (voice)

Patrick Carlyle

Additional Voices (voice)

Laraine Newman

Additional Voices (voice)

David Neher

Additional Voices (voice)

Pam Murphy

Additional Voices (voice)

Matthew Mercer

Additional Voices (voice)

Alec Medlock

Additional Voices (voice)

Allan McLeod

Additional Voices (voice)

Mickie McGowan

Additional Voices (voice)

Tricia McAlpin

Emmet (voice)

Mona Marshall

Additional Voices (voice)

Jason Marsden

Additional Voices (voice)

Danny Mann

Additional Voices (voice)

Dawnn Lewis

Additional Voices (voice)

Elissa Knight

Additional Voices (voice)

John Kassir

Additional Voices (voice)

Brandon Johnson

Additional Voices (voice)

Jess Harnell

Additional Voices (voice)

Mike Hanford

Additional Voices (voice)

Daniel Gerson

Additional Voices (voice)

Teresa Ganzel

Additional Voices (voice)

Andy Fischer-Price

Additional Voices (voice)

Keith Ferguson

Additional Voices (voice)

Bill Farmer

Additional Voices (voice)

Paul Eiding

Additional Voices (voice)

Greg Dykstra

Additional Voices(voice)

John Cygan

Additional Voices (voice)

Sean Conroy

Additional Children's Voices (voice)

Natalie Jane Dang

Additional Children's Voices (voice)

Gage Davenport

Additional Children's Voices (voice)

Ethan Louis Samuels DiSalvio

Additional Children's Voices (voice)

Faith Goblirsch

Additional Children's Voices (voice)

Brooke Klinger

Additional Children's Voices (voice)

Nikolas Michailidis

Additional Children's Voices (voice)

Marley Pearson

Additional Voices (voice)

Lindsay Lefler