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)