Kat
Dr. James Harvey
Carrigan
Dibs
Casper (voice)
Stinkie (voice)
Stretch (voice)
Fatso (voice)
Casper on Screen
Nicky
Andreas
Vic DePhillippi
Amber Whitmire
Amelia Harvey
Mr. Rugg
Father Guido Sarducci
Terry Murphy ('Hard Copy')
Woman Being Interviewed
Reporter (voice)
The Crypt Keeper (voice)
Mr. Curtis
Student #1
Student #2
Arnold (voice)
Drunk in Bar
Student
Phantom
Dr. Raymond Stantz (uncredited)
Rodney Dangerfield (uncredited)
Clint Eastwood (uncredited)
Mel Gibson (uncredited)
Little Red Riding Hood (uncredited)
Kid at Party (uncredited)
Fatso's Burping (uncredited)
Radio announcer (uncredited)