Villian: Grey Fox
The first nine episodes of the third season originally started with the old Scooby-Doo, Where Are You? opening sequence, but was replaced with the 1976 The Scooby-Doo Show intro for syndication.
The third season of The Scooby Doo Show was originally run under the title Scooby Doo's All Stars. On the original Saturday morning run of this series, which were 90 minutes, new episodes were mixed with episodes from previous series (namely Scooby Doo, Where Are You?). When the new episodes from Scooby Doo's All Stars went into syndication, they were added to the package with The Scooby Doo Show, and have been run under this title ever since.