Scooby Doo never really goes off the air. At this point it's a cultural institution not unlike the Simpsons - but while that show has tried over the years to hide the seams created by changing producers, writers, artists etc, the Scoobyverse embraces those seams, creating spinoff after spinoff and every time one show ends replacing it with another that's usually coming at the material from a completely different direction from the previous version.

And they're mostly shit.