Christina Ricci

Kat

Bill Pullman

Dr. James Harvey

Cathy Moriarty

Carrigan

Eric Idle

Dibs

Malachi Pearson

Casper (voice)

Joe Alaskey

Stinkie (voice)

Joe Nipote

Stretch (voice)

Brad Garrett

Fatso (voice)

Devon Sawa

Casper on Screen

Chauncey Leopardi

Nicky

Spencer Vrooman

Andreas

Garette Ratliff Henson

Vic DePhillippi

Jessica Wesson

Amber Whitmire

Amy Brenneman

Amelia Harvey

Ben Stein

Mr. Rugg

Don Novello

Father Guido Sarducci

Terry Murphy

Terry Murphy ('Hard Copy')

Ernestine Mercer

Woman Being Interviewed

Doug Bruckner

Reporter (voice)

John Kassir

The Crypt Keeper (voice)

Wesley Thompson

Mr. Curtis

Michael Dubrow

Student #1

J.J. Anderson

Student #2

Jess Harnell

Arnold (voice)

Michael McCarty

Drunk in Bar

Micah Winkelspecht

Student

Mike Simmrin

Phantom

Dan Aykroyd

Dr. Raymond Stantz (uncredited)

Rodney Dangerfield

Rodney Dangerfield (uncredited)

Clint Eastwood

Clint Eastwood (uncredited)

Mel Gibson

Mel Gibson (uncredited)

Elise Main

Little Red Riding Hood (uncredited)

Bill Farmer

Fatso's Burping (uncredited)

Harry Shearer

Radio announcer (uncredited)

Fred Rogers

Archive Footage