The Avengers: Earth's Mightiest Heroes · SEASON 1

Hail Hydra!

Episode 21 · 2011-05-22

★ 6.3
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Season 1Episode 21★ 6.3/10
  • Action & Adventure
  • Animation
  • Sci-Fi & Fantasy
  • Family

Episode overview

Black Widow turns to the Avengers for help when Hydra and AIM battle over control of the Cosmic Cube.

25 minutes

Season 1 episodes

1. Breakout (1)2010-10-20 2. Breakout (2)2010-10-20 3. Iron Man Is Born2010-10-24 4. Thor the Mighty2010-10-24 5. Hulk Versus the World2010-10-24 6. Meet Captain America2010-10-24 7. The Man in the Ant Hill2010-10-24 8. Some Assembly Required2010-10-27 9. Living Legend2010-11-03 10. Everything Is Wonderful2010-11-10 11. Panther's Quest2010-11-17 12. Gamma World (1)2010-11-26 13. Gamma World (2)2010-11-26 14. Masters of Evil2010-12-05 15. 4592010-12-12 16. Widow's Sting2010-12-19 17. The Man Who Stole Tomorrow2011-01-09 18. Come the Conqueror2011-01-16 19. The Kang Dynasty2011-01-23 20. The Casket of Ancient Winters2011-05-15 21. Hail Hydra!2011-05-22 22. Ultron-52011-05-29 23. The Ultron Imperative2011-06-05 24. This Hostage Earth2011-06-12 25. The Fall of Asgard2011-06-19 26. A Day Unlike Any Other2011-06-26