Roller Ghoster is a green and hairy goblin like monkey who sabotages rides in the Amusement Park. After Shaggy and Scooby defeated the monster by skating around in the skate park and making him fly off a ramp and into a tent full of prizes, Fred Jones expected it to be Chris but it was instead Terry who Velma knew who it was all along. The Roller Ghoster is voiced by Arthur Burghardt.