Challenge of the Super Friends is an American animated television series about a team of superheroes which ran from September 9, 1978, to December 23, 1978, on ABC. The complete series (16 episodes) was produced by Hanna-Barbera Productions for Warner Bros. Television and is based on the Justice League and associated comic book characters published by DC Comics. It was the third series of Super Friends cartoons, following the original Super Friends in 1973 and The All-New Super Friends Hour in 1977. The plots for this series were, at the time of its initial airing, arguably the best effort to portray comic book heroes in animated television shorts. As originally aired, this season consisted of two half-hour segments. The first of these was an adventure with Superman, Batman and Robin, Wonder Woman, Aquaman, and the Wonder Twins, similar to those that had aired the previous season in The All-New Super Friends Hour.[1] Thanks to these episodes being shown using the opening credits of the All-New Super Friends Hour in syndication[2], the second segment along being used with the Challenge of Super Friends opening, and confused references to the show[3] it is often mistakenly believed that the first and second segments were two separate shows. The second segment of this season featured the Legion of Doom, a team of thirteen recurring foes, the Super Friends' worst enemies. Every episode would feature battles between the thirteen supervillains of the Legion of Doom and the eleven superheroes of the Justice League of America. The Legion of Doom dwelled in a murky swamp and launched their attacks for global conquest from a sinister looking, swamp-based, mechanical, flying headquarters, called the Hall of Doom as a suitable contrast with the Super Friends' gleaming Hall of Justice.