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 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 (which also resembled Darth Vader's helmet) as a suitable contrast with the Super Friends' gleaming Hall of Justice.