Billy Crystal

Mike (voice)

John Goodman

Sullivan (voice)

Steve Buscemi

Randy (voice)

Helen Mirren

Dean Hardscrabble (voice)

Peter Sohn

Squishy (voice)

Joel Murray

Don (voice)

Sean Hayes

Terri (voice)

Dave Foley

Terry (voice)

Charlie Day

Art (voice)

Alfred Molina

Professor Knight (voice)

Tyler Labine

Greek Council VP (voice)

Nathan Fillion

Johnny (voice)

Aubrey Plaza

Greek Council President (voice)

Bobby Moynihan

Chet (voice)

Noah Johnston

Young Mike (voice)

Julia Sweeney

Ms. Squibbles (voice)

Bonnie Hunt

Mrs. Graves (voice)

John Krasinski

Frank McCay (voice)

Bill Hader

Referee / Slug (voice)

Beth Behrs

PNK Carrie (voice)

Bob Peterson

Roz (voice)

John Ratzenberger

Yeti (voice)

Lori Alan

Additional Voices (voice)

Carlos Alazraqui

Additional Voices (voice)