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 in 1973. Pat Stevens took over her role as the voice of Velma. For the 1977–78 season, "The Scooby-Doo/Dynomutt Show" became the two-hour programming block "Scooby's All-Star Laff-A-Lympics" (1977–78) with the addition of "Laff-a-Lympics" and "Captain Caveman and the Teen Angels". In addition to eight new episodes of "Scooby-Doo" and reruns of the 1969 show, Scooby-Doo also appeared during the "All-Star" block's "Laff-a-Lympics" series, which featured 45 Hanna-Barbera characters competing in "Battle of the Network Stars"-esque parodies of Olympic sporting events. Scooby was seen as the team captain of the "Laff-a-Lympics" "Scooby Doobies" team, which also featured Shaggy and Scooby-Dum