The Avengers: Earth's Mightiest Heroes

When the powers of a single hero are not enough to save the world, the world’s greatest heroes—Iron Man, Thor, Captain America, The Hulk, Ant-Man/Giant Man and Wasp—assemble to form the Avengers.

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Seasons

1. Breakout (1)

Air Date: 2010-10-20

A mass breakout occurs at each of the four supervillain prisons.

2. Breakout (2)

Air Date: 2010-10-20

Ant-Man/Giant-Man, Hulk, Iron Man, Thor and Wasp band together to battle Graviton after he escapes from the Raft and targets Nick Fury.

3. Iron Man Is Born

Air Date: 2010-10-24

After defeating HYDRA's attack on the United Nations, Iron Man learns that S.H.I.E.L.D. is taking control of his technology.

4. Thor the Mighty

Air Date: 2010-10-24

After stopping a robbery attempt by the Wrecking Crew, Thor returns to Asgard in order to defeat Loki and the Frost Giants.

5. Hulk Versus the World

Air Date: 2010-10-24

The Hulk is hunted by General Ross and the Absorbing Man while Hawkeye discover a conspiracy within SHIELD.

6. Meet Captain America

Air Date: 2010-10-24

Kang the Conqueror observers, while Captain America and the Red Skull battle during World War II.

7. The Man in the Ant Hill

Air Date: 2010-10-24

Ant-Man and the Wasp work together to stop Whirlwind. Meanwhile T'Challa's father fights the Man-Ape for control of Wakanda.

8. Some Assembly Required

Air Date: 2010-10-27

The Enchantress uses her magic to manipulate the Hulk into distrusting the rest of the Avengers and attacking Thor.

9. Living Legend

Air Date: 2010-11-03

The Avengers discover the frozen body of Captain America and revive him, leading Baron Zemo to attack, seeking revenge against Cap for infecting him with Virus X.

10. Everything Is Wonderful

Air Date: 2010-11-10

Furious at Tony Stark for buying up his company, Simon Williams seeks revenge by undergoing a dangerous AIM procedure, overseen by MODOC and the Grim Reaper, Williams' brother, which turns him into a being of pure ion energy.

11. Panther's Quest

Air Date: 2010-11-17

The Black Panther seeks the Avengers' aid in freeing his African nation of Wakanda from usurper king Man-Ape, and stopping Hydra agents Ulysses Klaw and the Grim Reaper from stealing Wakanda's supply of vibranium.

12. Gamma World (1)

Air Date: 2010-11-26

When the Leader creates a bubble of gamma radiation emanating from the Cube that mutates any human it touches, the Avengers team up with Doc Sampson to stop him. Meanwhile, Hawkeye infiltrates a Hydra base in order to capture Black Widow.

13. Gamma World (2)

Air Date: 2010-11-26

It's up to Hawkeye, the Hulk, and Thor to save the day when the Leader's gamma radiation ray mutates the rest of the Avengers and threatens to do the same to every human on earth.

14. Masters of Evil

Air Date: 2010-12-05

It's Hawkeye, Black Panther, and Ant Man to the rescue when Baron Zemo and his Masters of Evil defeat the rest of the team and take over the Avengers Mansion.

15. 459

Air Date: 2010-12-12

The Avengers join forces with Captain Mar-vell in order to prevent a Kree sentry drone from destroying the Earth.

16. Widow's Sting

Air Date: 2010-12-19

Defying the orders of both SHIELD and Iron Man, Hawkeye and Mockingbird allow themselves to be captured by Hydra in an attempt to bring down Black Widow.

17. The Man Who Stole Tomorrow

Air Date: 2011-01-09

Kang arrives from the future, claiming he must kill Captain America and conquer the Earth in order to save it from destruction.

18. Come the Conqueror

Air Date: 2011-01-16

Kang launches a full-scale invasion of Earth using an army of robots, and in order to save New York, the Avengers are forced to unleash the Ultrons who serve as guards for the Negative Zone Prison.

19. The Kang Dynasty

Air Date: 2011-01-23

The Avengers board Kang's command ship in order to put an end to his invasion of Earth.

20. The Casket of Ancient Winters

Air Date: 2011-05-15

Dark elf Malekith the Accursed locates an Asgardian artifact that plunges the Earth into eternal winter.

21. Hail Hydra!

Air Date: 2011-05-22

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

22. Ultron-5

Air Date: 2011-05-29

When Ultron-5 goes out of control and kidnaps Wasp, things go crazy when the droid kills Thor with his lasers.

23. The Ultron Imperative

Air Date: 2011-06-05

Despite Thor going missing and Captain America ending up in the hospital, the Avengers must stop Ultron from eliminating the world's most flawed creatures-humanity.

24. This Hostage Earth

Air Date: 2011-06-12

The Masters of Evil take over Earth and Loki double crosses Baron Zemo.

25. The Fall of Asgard

Air Date: 2011-06-19

Separated across the mythological realms, the Avengers face new threats and make allies for the fight against Loki.

26. A Day Unlike Any Other

Air Date: 2011-06-26

Eight of the nine realms of Asgard have fallen, only the Earth remains. The Avengers are all that stands between Loki and total conquest.

1. The Private War of Doctor Doom

Air Date: 2012-04-01

While playing host to the Fantastic Four at Avengers Mansion, the Avengers find themselves under attack by Doctor Doom's forces.

2. Alone Against A.I.M.

Air Date: 2012-04-08

Seeking revenge against Tony Stark, the leader of AIM seizes control of Stark Enterprises' corporate tower.

3. Acts of Vengeance

Air Date: 2012-04-15

The Enchantress is on a vindictive hunt for Baron von Zemo and he appeals to the Avengers for help against her.

4. Welcome to the Kree Empire

Air Date: 2012-04-22

Ronan the Accuser of the Kree Empire arrives at Earth with Captain Mar-Vel in tow to pass judgment on whether the planet should be annexed or destroyed.

5. To Steal an Ant-Man

Air Date: 2012-04-29

When Henry Pym discovers that his Ant-Man equipment has been stolen and being used by a criminal, he hires Heroes for Hire to recover it.

6. Michael Korvac

Air Date: 2012-05-06

The Avengers receive a man who appears to have been experimented on by aliens, and now hunted by another extraterrestrial group.

7. Who Do You Trust?

Air Date: 2012-05-13

Iron Man learns from Nick Fury that the Avengers has been infiltrated by a Skrull impostor and the team turns against each other.

8. The Ballad of Beta Ray Bill

Air Date: 2012-05-20

Thor meets an alien trespasser whose hostility and monstrous appearance belie his unexpected worthiness to wield his hammer, Mjolnir.

9. Nightmare in Red

Air Date: 2012-06-24

SHIELD is apparently attacked by the Hulk, but Banner is accounted for elsewhere at the same time while this Hulk is red in color.

10. Prisoner of War

Air Date: 2012-07-01

The real Captain America and his fellow prisoners attempt to escape their Skrull prison.

11. Infiltration

Air Date: 2012-07-08

A Skrull team posing as The Avengers invades Wakanda with only Ms. Marvel able to help the Black Panther.

12. Secret Invasion

Air Date: 2012-07-15

The Skrull Empire initiates their seizure of Earth and the Avengers are hard pressed to thwart it.

13. Along Came a Spider…

Air Date: 2012-07-22

With Captain America's reputation now in tatters, the superhero and the similarly maligned Spider-Man find themselves trying to thwart a prisoner transport interception.

14. Behold… The Vision

Air Date: 2012-07-29

Captain America and friends travel to Wakanda to repair his shield, unaware that a powerful android is hunting them to capture it among other objectives.

15. Powerless

Air Date: 2012-08-05

The Enchantress offers Loki a chance to exact his revenge on Thor and the Avengers for thwarting his conquest of the Nine Realms, and uses a spell to strip Thor, Captain America, and Iron Man of their powers. Now, the helpless heroes must defeat Loki - his soul now in command of a powerful Asgardian weapon known as the Destroyer - without their abilities.

16. Assault on 42

Air Date: 2012-08-12

When an Avenger group visits SHIELD's special prison in the Negative Zone, they soon find themselves under siege by a mysterious enemy.

17. Ultron Unlimited

Air Date: 2012-08-19

Ultron orders the Vision to lead his android impersonators of the Avengers in capturing the originals.

18. Yellowjacket

Air Date: 2012-09-09

When Henry Pym is apparently killed, a new vigilante using equipment broadly similar to the scientist's is discovered attacking criminals.

19. Emperor Stark

Air Date: 2012-09-16

After a month of being dormant for repairs, The Vision finds the world under the control of Tony Stark.

20. Code Red

Air Date: 2012-09-23

When there is a sudden exposure of a malignant virus around the Avengers mansion, the Secretary of Defense blames the team and lays siege of the headquarters.

21. Winter Soldier

Air Date: 2012-09-30

While dealing with the Red Skull's escape with his Sleeper robots, Captain America also investigates the villain's former henchman who seems disturbingly familiar.

22. The Deadliest Man Alive

Air Date: 2012-10-07

With the Hulk apparently rampaging wild, the Red Hulk comes to the Avengers to request to join.

23. New Avengers

Air Date: 2012-10-14

When the Avengers are apparently killed by Kang the Conqueror, an automatic function created by Tony Stark calls up several allies up as replacements.