In honor of this classic cartoon and our favorite mystery-solving dog, we’re going to take a look back at the scariest villains ever in a Scooby-Doo series or movie.
What made the Ghost Clown so very terrifying was his grin and his laugh, which were seen and heard after he pulled off one of his evil and deadly schemes.
The Phantom Virus is so scary because of how powerful he is. He’s able to manipulate technology in the real world, and he has near-omnipotence in the video game world.