Okay gang, we can't just keep guessing here. We have to set up a trap to unmask this villain! Scooby, Shaggy (Voidy?), go out and attract the monster so that when he runs this way, he'll trip on the rope, causing the net to fall on him. Then we'll see who it really is!
(five minutes later)
Way to go, Shaggy; you were supposed to jump over the wire, not trip over it. Now you're trapped in the net and the villian is long gone! Well, so much for a plan...