Yes! And coming in at number one is the Specter, Ebenezer Crabbe. I know what you're thinking, he looks like a Dracula but I assure you he is not but just as terrifying. Ebenezer haunts a construction site that is building on the land where his old home once stood. Now he hangs around scaring off all the other workers besides Jim Rivets, Red Sparks and Fred, Shaggy and Scooby. Clearly they were desperate for workers when they gave a dog a rivet gun.
In the end it turns out that it was Red Sparks as the Specter and Jim Rivets dressing up as his great great great granddaughter, Netty Crabbe. These two were delaying the construction of the building so they could rob local businesses by watching the owners dial into their safes and copy the combo.
It seems to me that just about every villain has a good case to plead insanity during their trial. Most of these people just hang out in abandoned warehouses, castles, closed down amusement parks, in full costume, mind you, just waiting for somebody to scare off. That isn't normal behavior.