Scooby-Doo is an American media franchise based on an animated television series launched in 1969 and continued through several derivative media. Writers Joe Ruby and Ken Spears created the original series, Scooby-Doo, Where Are You!, for Hanna-Barbera Productions. This Saturday-morning cartoon series featured teenagers Fred Jones, Daphne Blake, Velma Dinkley, and Shaggy Rogers, and their talking Great Dane named Scooby-Doo, who solve mysteries involving supposedly supernatural creatures through a series of antics and missteps. Scooby-Doo was originally broadcast on CBS from 1969 to 1976, when it moved to ABC. ABC aired various versions of Scooby-Doo until canceling it in 1985, and presented a spin-off featuring the characters as children called A Pup Named Scooby-Doo from 1988 until 1991. Two Scooby-Doo reboots aired as part of Kids' WB on The WB and its successor The CW from 2002 until 2008. Further reboots were produced for Cartoon Network beginning in 2010 and continuing through 2018. Repeats of the various Scooby-Doo series are frequently broadcast on Cartoon Network's sister channel Boomerang in the United States and other countries. The most recent Scooby-Doo series, Scooby-Doo and Guess Who?, premiered on June 27, 2019, as an original series on Boomerang's streaming service and later HBO Max. In 2013, TV Guide ranked Scooby-Doo the fifth-greatest TV cartoon of all time. Development In 1968, parent-run organizations, particularly Action for Children's Television (ACT), began protesting what they perceived as excessive violence in Saturday-morning cartoons. Most of these shows were Hanna-Barbera action cartoons such as Space Ghost, The Herculoids, and Birdman and the Galaxy Trio, and virtually all of them were canceled by 1969 because of pressure from the parent groups. Members of these watch groups served as advisers to Hanna-Barbera and other animation studios to ensure that new programs would be safe for children. Fred Silverman, executive for daytime programming at CBS, was then looking for a show that would both revitalize his Saturday-morning line and please the watch groups. The result was The Archie Show from Filmation, based on Bob Montana's teenage humor comic book Archie. Also successful were the musical numbers The Archies performed during each program (one of which, "Sugar, Sugar", was the most successful Billboard number-one hit of 1969). Eager to build upon this success, Silverman contacted producers William Hanna and Joseph Barbera about creating another show based on a teenage rock group, this time featuring teens who solved mysteries between gigs. Silverman envisioned