Avengers: Earth's Mightiest Heroes follows Ant-Man, Captain America, Hulk, Iron Man, Thor, and Wasp as they battle the world's most dangerous villains. Hawkeye and Black Panther also make appearances. / The series premiered on Disney XD in September of 2010. 52 episodes have been ordered. 20 "micro-episodes" were also made to showcase the characters that would inhabit the series.