The Avengers: Earth's Mightiest Heroes was a series that ran from September 22nd, 2010 to June 28th, 2012. It is the second series to focus on the Avengers after The Avengers: United They Stand. For the first time since Spider-Man and Spider-Man and His Amazing Friends, the series featured a main character, Iron Man, who also appeared on another series currently airing, the other being Iron Man: Armored Adventures.