Fred Savage
Brian Stevenson

Howie Mandel
Maurice

Daniel Stern
Glen Stevenson

Margaret Whitton
Holly Stevenson

Rick Ducommun
Snik

Frank Whaley
Boy

Ben Savage
Eric Stevenson

William Murray Weiss
Todd

Devin Ratray
Ronnie Coleman

Amber Barretto
Kiersten

J. Michael Hunter
Mr. Finn

Tom Hull
Principal

Magbee
Bus Driver

Lisa Cain
Holly's Friend

Dana Wood
Arnold

Byron Faler
Schmoog

Doug Turner
St. Louis Monster

Donna Strickland
TV Guest

Howard Spiegel
Father

Jessica Hauser
Innocent Girl

Jessica Greenberg
Painted-Face Girl

Natanya Ross
Kid on Trial

Michael Weaver
Kid on Trial

Luke Greenberg
Kid on Trial

Morgan Greenberg
Kid on Trial

Alexander Knoll
Kid on Trial

Herbert Duarte
Kid on Trial

Kala Savage
Little Monster

Rachel Weiss
Little Monster

Matt Cavenaugh
Little Monster

Amy Holden
Little Monster

Stacy Pochowicz
Little Monster

Laura Winstead
Little Monster

Elise Schillmoller
Little Monster

Trent Jobin
Little Monster

Amy Plaskett
Little Monster

Ashley Broadfoot
Little Monster

Ginny Broadfoot
Little Monster

Jeremy Fowler
Little Monster

Scott Bayzle
Little Monster

Matthew Norton
Little Monster

Davy Beard
Little Monster

Darwin Brandis
Snorekill (uncredited)