Avengers: Earth's Mightiest Heroes!2010 | TV Show

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Superheroes, including Iron Man, Thor and Captain America, band together to fight evil.

Premiered: October 20, 2010

Rating: TV-Y7

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Season 1, Episode 21 Hail, Hydra!

First Aired: May 22, 2011

Black Widow seeks the Avengers' help to prevent Hydra from obtaining the Cosmic Cube.

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The Casket of Ancient Winters

Season 1, Episode 20

May 15, 2011

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Ultron-5

Season 1, Episode 22

May 29, 2011

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