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 Spooky Scarecrow" and "Scooby-Doo! Mecha Mutt Menace", from the September 2013 DVD releases "Scooby-Doo! 13 Spooky Tales: Run for Your 'Rife!" and "Scooby-Doo! 13 Spooky Tales: Ruh-Roh Robot!". On May 13, 2014, another episode, "Scooby-Doo! Ghastly Goals" was released on the "Scooby-Doo! 13 Spooky Tales: Field of Screams" DVD. On May 5, 2015, "Scooby-Doo! and the Beach Beastie", the sixth direct-to-video special, was released on the "Scooby-Doo! 13 Spooky Tales: Surf's Up Scooby-Doo" DVD. Gold Key Comics began publication of "Scooby-Doo, Where Are You!" comic books in December 1969. The comics initially contained adaptations of episodes of the television show