The Avengers: Earth's Mightiest Heroes:Revenge of the Masters of Evil

The Avengers: Earth's Mightiest Heroes:Revenge of The Masters of Evil is an 2 hour-long special on Disney XD after the series finale. The special focuses on the avengers and their new members as they battle against both the newly reformed masters of evil and their mysterious new enemy who is helping the masters so they can help him with his master plan.

Plot
The Avengers,with spider man's assistance, stop the Wrecking Crew attempted robbery of a diamond vault and asked him to join the team with 5 other members. Meanwhile, The Shadow,(an extraterrestrial warlord form a other dimension) Plans to conquer earth by exterminating part of the population; so he uses his dark magic to bring Grey Gargoyle,Blizzard,Radioactive Man, and Whirlwind back to live and uses them steal seven powerful gems that will help him with his plan. The Shadow assembles Baron Zemo,  Abomination, Chemistro, Crimson Dynamo, Living Laser, Grey Gargoyle, Blizzard, Radioactive Man, Whirlwind, Absorbing Man, Graviton, Loki, Man-Ape, Griffin, Viper, Moonstone, Green Goblin, and speed demon, to reform the masters of evil and take down the avengers once and for all. after a huge battle with the avengers, the masters are defect again and the avengers go after shadow who has all seven power stones to transform him into a giant dragon-like monster with powers strong enough to destroy the world.but, by working together and with a little help from odin, the avengers destroy shadow once and for all. In the aftermath of their victory, The avengers welcome their six new members and say their battle cry, AVENGERS ASSEMBLE.

Avengers
Steve Rogers/Captain America: an American war hero from World War II and leader of the avengers

Tony Stark/Iron Man: a genius, billionaire, playboy and philanthropist. He not only invented the Iron Man Armor, but wears the armored suit himself.

Thor: Thor is an Asgardian god of thunder and a powerful warrior in Asgard

Robert Bruce Banner/Hulk: a normal human scientist until he was exposed to gamma radiation which turned him into a big green monster called the Hulk.

Henry "Hank" Pym/Yellowjacket: a very intelligent scientist who is the love interest of Wasp, cared of his personality disorder and returns to his old self.

Janet "Jan" van Dyne/Wasp: a female superhero and a college student who works with Hank Pym at Greyburn College in New York City.

T'Challa/Black Panther: the current king of Wakanda