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

Amy Brenneman

Amelia Harvey

Ben Stein

Mr. Rugg

Don Novello

Father Guido Sarducci

Ernestine Mercer

Woman Being Interviewed

John Kassir

The Crypt Keeper (voice)

Wesley Thompson

Mr. Curtis

Jess Harnell

Arnold (voice)

Dan Aykroyd

Dr. Raymond Stantz (uncredited)

Rodney Dangerfield

Rodney Dangerfield (uncredited)

Clint Eastwood

Clint Eastwood (uncredited)

Mel Gibson

Mel Gibson (uncredited)

Bill Farmer

Fatso's Burping (uncredited)

Harry Shearer

Radio announcer (uncredited)