Home People Glenn Leopold Glenn Leopold movies Glenn Leopold movies Glenn Leopold Movies (11) The Haunted Pumpkin of Sleepy Hollow (2002) As Writer. Scooby-Doo and the Alien Invaders (2000) As Story. Scooby-Doo on Zombie Island (1998) As Screenplay. A Flintstones Christmas Carol (1994) As Writer. The Town Santa Forgot (1993) As Teleplay. The Twelve Days of Christmas (1993) As Writer. Monster in My Pocket: The Big Scream (1992) As Writer. Scooby-Doo and the Ghoul School (1988) As Writer. The Smurfs: 'Tis the Season to Be Smurfy (1987) As Writer. Too Scared to Scream (1985) As Writer. The Prowler (1981) As Writer.
