Aisha Tyler

Millie (voice)

Bobs Gannaway

Roto (voice)

Nathan Fillion

Johnny (voice)

Jenifer Lewis

Grandma Tuskmon (voice)

Ali Wong

Jill (voice)

Joe Lo Truglio

Jack (voice)

John Ratzenberger

Bernard (voice)

Alan Kim

Ben (voice)

Kimberly Brooks

Additional Monsters (voice)

Rhys Darby

Roger Rogers (voice)

Bobby Moynihan

Chet (voice)

Paula Pell

Sunny (voice)

Richard Ayoade

Declan (voice)

Janelle James

Joy (voice)

Jimmy Tatro

Skyler (voice)

Romi Dames

Hazel (voice)

Corey Burton

Slappy (voice)

Billy Crystal

Mike (voice)

John Goodman

Sulley (voice)

Ben Feldman

Tylor (voice)

Mindy Kaling

Val (voice)

Henry Winkler

Fritz (voice)

Alanna Ubach

Cutter / Carla / Mary (voice)

Lucas Neff

Duncan (voice)

Stephen Stanton

Smitty / Needleman / Sanderson / Reporter 2 (voice)

Christopher Swindle

Fungus / Phlegm / McLean / Additional Monsters (voice)

Dee Bradley Baker

Banana Bread / Chompy / Beefy Scarer (voice)

Roxana Ortega

Celia Mae / Reporter 4 (voice)

Steve Buscemi

Randall (voice)

Aubrey Matalon

Scarlett (voice)

Carlos Alazraqui

John Rivera (voice)

Alan Tudyk

Maître d' (voice)

Max Mittelman

Reporter 1 / Additional Monsters (voice)

Nohely Quiroz

Gangly Kid / Additional Monsters (voice)

Tessa Rozanski

Hilary / Sweet Kid (voice)

Kevin Deters

DJ Slinky Stinkwell (voice)

Sam Deters

Not Valet Monster (voice)