two US film cartoonists, Bill Hanna (1910-2001) and Joe Barbera (1911-2006), who worked together for more than 50 years. They created the film characters of Tom and Jerry for MGM. They then set up Hanna-Barbera Productions in 1957 and made the popular television cartoon series Huckleberry Hound and The Flintstones. see also Scooby Doo, Yogi Bear