The Herculoids is an American Saturday-morning animated-cartoon television series, created and designed by Alex Toth, that was produced by Hanna-Barbera Productions. The show debuted on September 9, 1967, on CBS. Hanna-Barbera produced one season for the original airing of the show, although the original 18 episodes were rerun during the 1968–69 television season, with "The Herculoids" ending its run on September 6, 1969. Eleven new episodes were produced in 1981 as part of the "Space Stars" show. The plotlines are rooted in science fiction.