Grandpa Fred may refer to: Grandpa Fred, a character in Gremlins 2: The New Batch, portrayed by Robert Prosky, a parody of the Grandpa character in The Munsters. Grandpa Fred, a character in Sixteen Candles, portrayed by Max Showalter. Grandpa Fred, a puppet used by American ventriloquist David Strassman. Grandpa Fred, a character in Maybe It's Me.