>>103721271Whenever it's actually real, or implied to be real if the one they catch is just a guy in a costume.
Like the first one like that, the killer robot that chased them all around the park wasn't some guy in a costume but it was an actual fucking robot. As far as I'm aware that is the FIRST time it's actually something real in Scooby Doo.
I love the movies and specials as well. Zombie Island and the Ghoul School were always my favorites. And I think Witch's Ghost will always be my third favorite.
For these reasons I fucking loved Mystery Inc. with all of it's Old One bullshit and sudden twist at the end where it was all a prequel to the original series. That show was way better than it had any right to be.