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

Every episode ever - ranked by fan votes!

Last Updated: Sep 21, 2021

Network: Disney XD

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.

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Winter Soldier

#1 - Winter Soldier

Season 2 - Episode 21 - Aired Sep 30, 2012

Captain America ponders the mystery of the Winter Soldier and enlists Nick Fury's aid to find him when the Red Skull escapes from prison and massive robots - the Sleepers - arise as part of a contingency plan by the founder of HYDRA to destroy Washington, D.C.

star 8.06
411 votes
Directors: Boyd Kirkland
Writers: James Felder, Man of Action
Avengers Assemble!

#2 - Avengers Assemble!

Season 2 - Episode 26 - Aired Nov 11, 2012

From the very moment of their team's inception, the Avengers have fought against super-villains, time-travelling conquerors and even shape-shifting alien invaders. But now they must bring forth an army of nearly all their allies to face their greatest challenge yet - Galactus, the devourer of countless worlds and civilizations, and his quartet of heralds drawn from the very elements of nature.

star 8.05
297 votes
Directors: Roy Burdine
Writers: Christopher L. Yost
Secret Invasion

#3 - Secret Invasion

Season 2 - Episode 12 - Aired Jul 15, 2012

The Skrulls have invaded the entire Earth, and Captain America, Iron Man, and Thor lead an attack on the aliens.

star 7.95
557 votes
Directors: Boyd Kirkland
Writers: Christopher L. Yost
Live Kree or Die

#4 - Live Kree or Die

Season 2 - Episode 25 - Aired Nov 4, 2012

The Avengers arrive on the Kree homeworld of Hala, but find that they aren't exactly welcome there - even with Captain Marvel on their side.

star 7.90
373 votes
Directors: Steve Gordon
Writers: Christopher L. Yost
Code Red

#5 - Code Red

Season 2 - Episode 20 - Aired Sep 23, 2012

Strange fumes sicken all of the Avengers - save for Iron Man, whose suit of armor provides him with protection. Now the armored Avenger must race against time to synthesize a cure for the infected - while the team face the prospect of being quarantined by U.S. Defense Secretary Dell Rusk, who has sent Doc Samson, Falcon, the Red Hulk and the Winter Soldier to arrest them. When Captain America is captured by the Winter Soldier and brought before Dell Rusk, he learns that the enigmatic Secretary harbors a diabolical secret from the supersoldier's past. Based on Avengers: Red Zone.

star 7.89
409 votes
Directors: Roy Burdine
Writers: Man of Action
New Avengers

#6 - New Avengers

Season 2 - Episode 23 - Aired Oct 14, 2012

Kang the Conqueror is freed from prison by his alternate timeline look-alikes and attempts to conquer the world once again, this time trapping the Avengers in a temporal void to keep them from getting in the way of his plans. Now a new team of heroes (Spider-Man, War Machine, Wolverine, Iron Fist, Luke Cage and the Thing) must band together to stop the cross-temporal onslaught.

star 7.88
417 votes
Directors: Steve Gordon
Writers: Christopher L. Yost

#7 - Infiltration

Season 2 - Episode 11 - Aired Jul 8, 2012

The Skrull invasion has begun, and Wakanda is the first target. Ms. Marvel is the only one there to fight off these aliens, whose shape-shifting abilities make matters much worse for her.

star 7.87
633 votes
Directors: Roy Burdine
Writers: Christopher L. Yost
Nightmare in Red

#8 - Nightmare in Red

Season 2 - Episode 9 - Aired Jun 24, 2012

When S.H.I.E.L.D. is attacked by the Hulk, the Avengers rush to the scene. When they arrive, the rampaging Hulk is RED! The hunt is on for Bruce Banner as the Avengers try and unravel the mystery of 'Who is the Red Hulk?'

star 7.86
637 votes
Directors: Boyd Kirkland
Writers: Mark Parsons
Behold…The Vision

#9 - Behold…The Vision

Season 2 - Episode 14 - Aired Jul 29, 2012

Still trying to restore hope and order to the world after the Skrull invasion, Captain America travels to Wakanda with the Avengers to repair his shield, but a new foe has come to take his shield. The Avengers must now find out where he came from and who sent him before he prevails.

star 7.85
609 votes
Directors: Roy Burdine
Writers: Michael Ryan
Operation Galactic Storm

#10 - Operation Galactic Storm

Season 2 - Episode 24 - Aired Oct 21, 2012

The Kree attempt to create a wormhole connecting our solar system with their galaxy, which will consequently destroy the Sun and all life on Earth - just as Kang the Conqueror predicted. The Avengers and Captain Marvel head into space to stop it, but will they be in time?

star 7.80
400 votes
Directors: Boyd Kirkland
Writers: Christopher L. Yost
The Private War of Doctor Doom

#11 - The Private War of Doctor Doom

Season 2 - Episode 1 - Aired Apr 1, 2012

The Avengers team up with the Fantastic Four to battle Doctor Doom's armies.

star 7.78
792 votes
Directors: Gary Hartle
Writers: Christopher L. Yost
The Kang Dynasty

#12 - The Kang Dynasty

Season 1 - Episode 19 - Aired Jan 23, 2011

The Avengers attack Kang's ship with the help of the last of the Ultrons. They defeat Kang, who tells them the worst is yet to come.

star 7.78
743 votes
Along Came a Spider…

#13 - Along Came a Spider…

Season 2 - Episode 13 - Aired Jul 22, 2012

Captain America is still trying to earn back the trust of the public, he teams up with the equally-mistrusted Spider-Man to fight the Serpent Society, whose members are trying to rescue Viper.

star 7.78
562 votes
Directors: Roy Burdine
Writers: Christopher L. Yost
Prisoner of War

#14 - Prisoner of War

Season 2 - Episode 10 - Aired Jul 1, 2012

After being held prisoner for months, Captain America is ready to break out. If he is to succeed he must team up with his enemies. Cap won't let anything stop him, but he didn't count on facing the Super Skrull!

star 7.77
636 votes
Directors: Steve Gordon
Writers: Chris 'Doc' Wyatt, Kevin Burke
A Day Unlike Any Other

#15 - A Day Unlike Any Other

Season 1 - Episode 26 - Aired Jun 26, 2011

The Avengers go against Loki, although they are nothing to Loki's power.

star 7.77
698 votes
Everything Is Wonderful

#16 - Everything Is Wonderful

Season 1 - Episode 10 - Aired Nov 10, 2010

Simon Williams becomes a deadly being of ionic energy after being enraged by Tony destroying his company. Meanwhile, Wasp and Thor chase a group of AIM agents to find their secret hideout and run into another villain, MODOK.

star 7.76
847 votes
The Fall of Asgard

#17 - The Fall of Asgard

Season 1 - Episode 25 - Aired Jun 19, 2011

The Avengers struggle to survive in the realms of Asgard.

star 7.76
752 votes
Ultron Unlimited

#18 - Ultron Unlimited

Season 2 - Episode 17 - Aired Aug 19, 2012

The Avengers are ambushed and captured, one by one, by Ultron's team of synthezoid Avengers as part of the wayward android's plan to rid the world of "flawed" humans, perfect himself, and construct a mate.

star 7.76
519 votes
Directors: Roy Burdine
Writers: Christopher L. Yost
Assault on 42

#19 - Assault on 42

Season 2 - Episode 16 - Aired Aug 12, 2012

Stranded in the Negative Zone, the Avengers must join forces with their enemies - including former members of the Masters of Evil - to fight off an army of strange insectoid creatures that are laying siege to 42.

star 7.75
525 votes
Directors: Steve Gordon
Writers: Brian Reed
Welcome to the Kree Empire

#20 - Welcome to the Kree Empire

Season 2 - Episode 4 - Aired Apr 22, 2012

An alien warrior race known as the Kree visits Earth to make a final decision regarding whether to add Earth to the ever-expanding Kree empire or obliterate it.

star 7.73
680 votes
Directors: Boyd Kirkland
Writers: Paul Giacoppo
Widow's Sting

#21 - Widow's Sting

Season 1 - Episode 16 - Aired Dec 19, 2010

Hawkeye infiltrates Hydra Island to battle the Black Widow

star 7.72
804 votes
Directors: Vinton Heuck
Writers: Chris 'Doc' Wyatt, Kevin Burke

#22 - Yellowjacket

Season 2 - Episode 18 - Aired Sep 9, 2012

A mysterious explosion seemingly kills Hank in his college laboratory, but as the Avengers and their friends mourn the loss of their fallen comrade-in-arms, a fearless new vigilante - endowed with the same powers and technology as Ant-Man/Giant-Man and Wasp and calling himself "Yellowjacket" - begins taking out the members of the Serpent Society.

star 7.71
516 votes
Directors: Boyd Kirkland
Writers: James Felder, Man of Action

#23 - Ultron-5

Season 1 - Episode 22 - Aired May 29, 2011

Ant-Man gets tired of unending violence and he wants to find a better way to bring peace to world. After all, this is why he created the robot army, Ultron. But something goes terribly wrong.

star 7.69
615 votes
The Deadliest Man Alive

#24 - The Deadliest Man Alive

Season 2 - Episode 22 - Aired Oct 7, 2012

When the Hulk's name is cleared of the crimes committed by the Red Hulk, the Avengers find that the deception put forth by Captain America's Skrull doppelganger has made the green-skinned juggernaut even more of a loose cannon than before. Meanwhile, the enigmatic Red Hulk returns with a scheme to usurp the Hulk's place among the Avengers.

star 7.69
460 votes
Directors: Steve Gordon
Writers: Man of Action
Hail, Hydra!

#25 - Hail, Hydra!

Season 1 - Episode 21 - Aired May 22, 2011

The Black Widow requests the Avengers' help in retrieving the Cosmic Cube before AIM and HYDRA tear the world apart fighting over it.

star 7.69
655 votes
Directors: Vinton Heuck
Writers: Chris 'Doc' Wyatt, Kevin Burke