26 episodes · first aired 2012-04-01
| Still | # | Title | Overview | Air date | Rating |
|---|---|---|---|---|---|
 | 01 | The Private War of Doctor Doom 2012-04-01 | While playing host to the Fantastic Four at Avengers Mansion, the Avengers find themselves under attack by Doctor Doom's forces. | 2012-04-01 | 7.8 |
 |
Ratings shown are community scores. Once OMDB is wired, these become per-episode IMDB values.
| 02 |
Alone Against A.I.M. 2012-04-08 |
Seeking revenge against Tony Stark, the leader of AIM seizes control of Stark Enterprises' corporate tower. |
| 2012-04-08 |
| 7.0 |
 | 03 | Acts of Vengeance 2012-04-15 | The Enchantress is on a vindictive hunt for Baron von Zemo and he appeals to the Avengers for help against her. | 2012-04-15 | 7.3 |
 | 04 | Welcome to the Kree Empire 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. | 2012-04-22 | 7.3 |
 | 05 | To Steal an Ant-Man 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. | 2012-04-29 | 7.7 |
 | 06 | Michael Korvac 2012-05-06 | The Avengers receive a man who appears to have been experimented on by aliens, and now hunted by another extraterrestrial group. | 2012-05-06 | 7.3 |
 | 07 | Who Do You Trust? 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. | 2012-05-13 | 7.3 |
 | 08 | The Ballad of Beta Ray Bill 2012-05-20 | Thor meets an alien trespasser whose hostility and monstrous appearance belie his unexpected worthiness to wield his hammer, Mjolnir. | 2012-05-20 | 7.3 |
 | 09 | Nightmare in Red 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. | 2012-06-24 | 7.3 |
 | 10 | Prisoner of War 2012-07-01 | The real Captain America and his fellow prisoners attempt to escape their Skrull prison. | 2012-07-01 | 7.3 |
 | 11 | Infiltration 2012-07-08 | A Skrull team posing as The Avengers invades Wakanda with only Ms. Marvel able to help the Black Panther. | 2012-07-08 | 7.0 |
 | 12 | Secret Invasion 2012-07-15 | The Skrull Empire initiates their seizure of Earth and the Avengers are hard pressed to thwart it. | 2012-07-15 | 7.3 |
 | 13 | Along Came a Spider… 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. | 2012-07-22 | 6.0 |
 | 14 | Behold… The Vision 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. | 2012-07-29 | 6.0 |
 | 15 | Powerless 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. | 2012-08-05 | 5.5 |
 | 16 | Assault on 42 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. | 2012-08-12 | 5.5 |
 | 17 | Ultron Unlimited 2012-08-19 | Ultron orders the Vision to lead his android impersonators of the Avengers in capturing the originals. | 2012-08-19 | 6.0 |
 | 18 | Yellowjacket 2012-09-09 | When Henry Pym is apparently killed, a new vigilante using equipment broadly similar to the scientist's is discovered attacking criminals. | 2012-09-09 | 5.0 |
 | 19 | Emperor Stark 2012-09-16 | After a month of being dormant for repairs, The Vision finds the world under the control of Tony Stark. | 2012-09-16 | 6.2 |
 | 20 | Code Red 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. | 2012-09-23 | 6.7 |
 | 21 | Winter Soldier 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. | 2012-09-30 | 5.5 |
 | 22 | The Deadliest Man Alive 2012-10-07 | With the Hulk apparently rampaging wild, the Red Hulk comes to the Avengers to request to join. | 2012-10-07 | 6.0 |
 | 23 | New Avengers 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. | 2012-10-14 | 6.0 |
 | 24 | Operation Galactic Storm 2012-10-21 | As warned, the Kree Empire arrive to threaten Earth. | 2012-10-21 | 5.5 |
 | 25 | Live Kree or Die 2012-11-04 | The battle against the Kree Empire continues, with Captain Mar-Vell facing an agonizing moral decision in the conflict. | 2012-11-04 | 6.0 |
 | 26 | Avengers Assemble 2012-11-11 | The Avengers and his allies face the ultimate test when Galactus, the Devourer of Planets comes to consume Earth. | 2012-11-11 | 6.0 |
