Harvey Korman

as Prof von Klupp

Joseph Bologna

as P.T. Wynnsocki

David L. Lander

as Bernie

Maureen McCormick

as Nick's Mom

Rodger Bumpass

as Baby Huey / Irv

John Vernon

as Principal Scotti

Stephen Furst

as Phantoms' Manager / Baby Huey (Voice)

David Leisure

as Nick's Dad

Michael Angarano

as Nick

Tiffany Taubman

as Little Audrey

Rachel Snow

as Lotta

Denny Dillon

as Crabby Mom

Kate Simmons

as Patsy

Laraine Newman

as Minnie

Allyce Beasley

as Elsa

Annabeth Miller

as Las Vegas Dancer