The BEST Episodes of The Avengers: Earth's Mightiest Heroes
Every episode ever - ranked by fan votes!
Last Updated: May 28, 2021
Network: Disney XD
This animated series follows the adventures of the superhero team The Avengers - primarily consisting of Iron Man, Thor, Captain America, the Hulk, Ant-Man (a.k.a. Giant-Man), Wasp, Hawkeye, and the Black Panther - as they team up to save the world from dangers far too great for one superhero to handle alone. The Avengers frequently work with S.H.I.E.L.D., a peacekeeping agency run by Nick Fury (while the two aren't competing to save the world by their own means, which are often quite different).
#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.
#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.
#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.
#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.
#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.
#6 - 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?'
#7 - 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.
#8 - 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.
#9 - 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.
#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?
#11 - 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.
#12 - 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.
#13 - 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!
#14 - 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.
#15 - 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.
#16 - 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.
#17 - 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.
#18 - The Fall of Asgard
Season 1 - Episode 25 - Aired Jun 19, 2011
The Avengers struggle to survive in the realms of Asgard.
#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.
#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.
#21 - Widow's Sting
Season 1 - Episode 16 - Aired Dec 19, 2010
Hawkeye infiltrates Hydra Island to battle the Black Widow
#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.
#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.
#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.
#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.