 Thanks to the first segment alone being used with the "Challenge of the Super Friends" opening and confusing references to the show, it is often mistakenly believed that the first and second segments were two separate shows.When the "Challenge of the Super Friends" season was originally conceived, it was named "Battle of the Super Friends" and featured the introduction of Captain Marvel to the Super Friends.The group that challenged the heroes was called the "League of Evil", led by Captain Marvel's nemesis Doctor Sivana.