The Avengers: Earth's Mightiest Heroes! - Season 4

The guide to the fourth season of Marvel's highly anticipated animated series The Avengers: Earth's Mightiest Heroes! which aired its first season on Disney XD in October 2010 and concluded the season in April 2011. A second season aired in April 2012 concluded in September 2012. The third season which is the start of the series continued by fans, who feel the series was untimely cancelled, can be found at fanfiction.net. The fourth season will run from September 2012 to January 2013 and will consist of 26 episodes.
=== Synopsis === 
Season Four follows the Avengers facing the return of old villains such as A.I.M and HYDRA. Newer members across the World will join the team's roster and the foundation of the team will be shaken to its core. This season like season 3 will see longer and elaborate story arcs compared to that of Seasons 1 and 2. Galactus, who was sent into negative space by the Avengers, will signal his return to the series. Also, Thor will reveal the events of the Age Of Apocalypse to the rest of his team.
==Season 4: (2013)==
No.	# 	Title 	Synopsis 	Original Airdate
1 	73	A Hulk Of Another Color 	
The Avengers receive a distress call from Hulk's ID card and come to his aid, but what they find may be the most sinister creature to ever live.
Introducing Character: Carnage	September 2, 2013
2 	74	A Sinister Plan 	After barely defeating Carnage-Hulk, the Avengers imprison him inside 42. Little do the Avengers know but that is exactly what Carnage wanted.	September 5, 2013
3 	75	Goodbye Old Friend 	
The Avengers respond to a distress call at 42 to discover that the base has been overrun by Symbiotes. They are barely able to escape back to Earth and they decide that the gate to 42 must be destroyed and they must say goodbye to Bruce Banner.	September 8, 2013
4 	76	Red, White, And Blue 	
With the Avengers away on Hala, visiting the Kree homeworld, Red Skull and HYDRA attack the city. But Captain America, who stayed behind, enlists the aid of Wolverine and Winter Soldier to put an end to the Red Skull once and for all.	September 11, 2013
5 	77	An Iron Defeat 	
While during a battle with Mandarin, Iron Man suffers severe damage to his suit and he is forced to battle against his deadliest foe hand to hand.	September 14, 2013
6 	78	
Fight For Wakanda 	
While the Black Panther was on Hala with the Avengers, a group of citizens revolted against Wakanda and imprisoned Panther when he returned. Storm visits Wakanda to see her old friend finds out of the wrongdoing and must work to save Black Panther, herself, and the people of Wakanda from the evil Baron Zemo.	
June 8, 2013
7 	79	Thurst Through Time 	
Tony Stark and Peter Parker are working together to make modifications to the Ark reaction that powers Stark Tower, when a fail safe left by Kang The Conquerer is activated that thrusts Parker and Stark 86 years into the future, where they meet their descendants while avoiding capture by Alchemex.
Introducing Characters: Andros Stark and Miguel O'Hara	June 10, 2013
8 	80	A Second Attempt 	
The Leader and Abomination once again kidnap Wasp to harness her power to open a time gateway, but before they can even hook her to the machine Thor and Hawkeye make the save. Back At Avengers Mansion, Thor reveals the events of what could have happened had they been successful in activating the device.	June 11, 2013
9 	81	Return To Asgard 	
Thor returns home to find that Odin has perished in battle with Surtur. Thor vows to hunt him down before he does so he is convinced to take the OdinForce and become the new Ruler Of Asgard. But before that can happen Thor and Sif must defend Asgard from an Army of ice giants.	June 14, 2013
10 	82	
Doctor Who? 	
A strange being from a place called the dark dimension arrives and claims to be the new ruler of the planet. The Avengers quickly go battle against him but fall short due to his magical ability. Doctor Strange comes to their aid and helps to defeat the Dark Dimension being known as Dormammu and to send him back where he came from.
Introducing character: Dormammu and Doctor Strange	June 15, 2013
11 	83	The Cosmic Herald 	
A mysterious silver man appears who challenges the Avengers and warns them of the return of Galactus.
Introducing character: Silver Surfer 	June 21, 2013
12 	84	Tales Of The Past 	
Captain America tells a story about his teaming up with Wolverine and battling against the Red Skull during WW2. 	June 22, 2013
13 	85	
Distress 	
S.H.I.E.L.D bases all over the world are attacked and the Avengers split up to try and put an end to the threat. 	June 24, 2013
14 	86	Divided They Fall 	
After attacking S.H.I.E.L.D bases and subduing most of the Avengers, Dr. Doom enacts the second phase of his sinister plan. 	June 25, 2013
15 	87	United They Stand 	
The Avengers regroup and take the fight to Doctor Doom and put a stop to his sinister plan. 	June 26, 2013
16 	88	Rampage 	
A portal to the Negative Zone opens above Las Vegas and Carnage-Hulk returns to Earth and rampages throughout the city, killing hundreds. Will the Avengers be able to save Hulk or have to do the unthinkable to save a friend?	June 28, 2013
17 	89	Battle With The Demon 	
Thor, having received the full power of the Odinforce, goes after Surtur to seek revenge for the death of his father. 	June 29, 2013
18 	90	A.I.M Gets Stung 	
Wasp and Yellowjacket must overcome the odds against A.I.M after the other Avengers went to aid through in his battle with Surtur. 	June 30, 2013
19 	91	
The Fate Of The Nine Realms: Part 1	
The Avengers come to the aid of Thor to battle Surtur. 	July 1, 2013
20 	92	The Fate Of The Nine Realms: Part 2	
The Avengers once again seek the aid of the peoples of the nine realms in the finale battle against Surtur. 	July 4, 2013
21 	93	Age Of Apocalypse 	After the battle with Surtur, Thor reveals to the Avengers and the X-Men that the Age Of Apocalypse is coming to Earth in a matter of time. 	
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