Zach Galligan

Billy Peltzer

Phoebe Cates

Kate Beringer

John Glover

Daniel Clamp

Robert Prosky

Grandpa Fred

Robert Picardo

Forster

Christopher Lee

Doctor Catheter

Haviland Morris

Marla Bloodstone

Dick Miller

Murray Futterman

Jackie Joseph

Sheila Futterman

Gedde Watanabe

Mr. Katsuji

Keye Luke

Mr. Wing

Kathleen Freeman

Microwave Marge

Dan Stanton

Lewis

John Astin

Janitor

Henry Gibson

Employee Fired for Smoking

Rick Ducommun

Clamp Center Security Guard

Julia Sweeney

Peggy

Raymond Cruz

Messenger

John Capodice

Fire Chief

Isiah Whitlock Jr.

Fireman

Dean Norris

SWAT Team Leader

Tony Winters

Hallway Employee

Jacque Lynn Colton

Lady at Elevator

Dale Swann

Clamp Center Surveillance Supervisor

Page Hannah

Tour Guide #1

Sarah Lilly

Reporter in Lobby

Paul Bartel

Theatre Manager

Belinda Balaski

Movie Theater Mom

Kenneth Tobey

Projectionist

Leonard Maltin

Leonard Maltin

Hulk Hogan

Hulk Hogan

Dick Butkus

Dick Butkus

Bubba Smith

Bubba Smith

Archie Hahn

Forster's Technician

Leslie Neale

Forster's Technician

Ron Fassler

Forster's Technician

Time Winters

Forster's Technician

Jason Presson

Yogurt Jerk

Patrika Darbo

Yogurt Customer

Jerry Goldsmith

Yogurt Customer

Howie Mandel

Gizmo (voice)

Frank Welker

Mohawk (voice)

Tony Randall

Brain Gremlin (voice)

Mark Dodson

Gremlins (voice)

Kirk R. Thatcher

Gremlins (voice)

Neil Ross

Announcer (voice)

Jeff Bergman

Bugs Bunny / Daffy Duck / Porky Pig (voice)

Joe Dante

Grandpa Fred Director (uncredited)