The BEST seasons of The Avengers: Earth's Mightiest Heroes

Every season of The Avengers: Earth's Mightiest Heroes ever, ranked from best to worst by thousands of votes from fans of the show. The best seasons of The Avengers: Earth's Mightiest Heroes!

After 74 villains break out of prison, Marvel's most powerful superheroes team up to capture all of them, and also to defend the Earth from widespread threats.