Scooby-Doo, Where Are You! is the first incarnation of what would turn out to be a long-running media franchise. It premiered in 1969 and ran for three seasons consisting of a total of forty one episodes. While the original show ended long before Kids' WB! launched, two successor shows were launched on the block. The first was What's New Scooby Doo? which aired from 2002 to 2006. The second was Shaggy & Scooby-Doo Get a Clue! which aired from 2006 to 2008.
The show centers around a group of teenagers named Fred Jones, Daphne Blake, Velma Dinkley, and Shaggy Rogers as well as their semi-anthropomorphic dog Scooby-Doo. The gange travels in a van called the Mystery Machine and go around to solve mysteries involving local legends. While this often deals with alleged monsters, it usually turns out to be a human in disguise who had some sort of reason for wanting to scare other people off.