Scooby-Doo the head story editor on "Scooby-Doo" since 1983. Following the first season of "A Pup Named Scooby-Doo", Ruegger and much of his unit defected from Hanna-Barbera to Warner Bros. Animation to develop "Steven Spielberg Presents Tiny Toon Adventures" and later "Animaniacs", "Pinky and the Brain", and "Freakazoid!". From 1987 to 1988, Hanna-Barbera Productions produced "Hanna-Barbera Superstars 10", a series of syndicated TV movies featuring their most popular characters, including Yogi Bear, Huckleberry Hound, The Flintstones and The Jetsons. Scooby-Doo, Scrappy-Doo and Shaggy starred in three of these movies: "Scooby-Doo Meets the Boo Brothers" (1987), "Scooby-Doo and the Ghoul School" (1988),
Scooby-Doo! The Mystery Begins first seen on the DVD of "Scooby-Doo! and the Samurai Sword", "17 Again" and "Shorts". "Scooby-Doo! The Mystery Begins" was the most-watched telecast in Cartoon Network history with 6.1 million viewers on September 13, 2009, outdistancing the previous high of 3.9 million viewers that tuned into the premiere of the animated series "". Due to the success of "Scooby-Doo! The Mystery Begins", a sequel went into development in October 2009. Titled "Scooby-Doo! Curse of the Lake Monster", principal photography commenced on March 15, 2010 in various locations around Southern California. The sequel aired on October 16, 2010 and was released