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! and the Monster of Mexico Scooby-Doo! and the Monster of Mexico Scooby-Doo! and the Monster of Mexico is a 2003 direct-to-video animated comedy mystery film; the sixth in a series of direct-to-video films based upon the "Scooby-Doo" Saturday morning cartoons. It was released on September 30, 2003, and it was produced by Warner Bros. Animation. It is one of two Scooby-Doo movies released in 2003 (the other being Scooby-Doo and the Legend of the Vampire) that briefly brought back the original voice cast from the original 1969 series sans the late Scooby-Doo voice actor Don Messick (by now voiced by Frank Welker, who also plays