|Chronological and political information|
Earth's Mightiest Heroes
To protect the Earth from dangerous threats
The Avengers are a team of superheroes, Earth's Mightiest Heroes, based in New York City. Led by Captain America and including such members as Iron Man, Thor, Hawkeye, Black Widow, Falcon and Hulk, they are the Earth's foremost defense against superpowered threats. The team was originally headquartered in the Avengers Mansion, but after its destruction the team has moved into Stark Tower, now called Avengers Tower.
In the early days since their formation, the Avengers encountered and fought Molecule Man, a short but difficult battle they won. At some point in time, the Avengers split up and went their separate ways; the reason being unknown. It's unknown who else was in the Avengers prior to the series; because when Tony took over as leader he tells the others that the Avengers were coming back, handpicked by him. Meaning that there were more members then the seven current members.
After Captain America's supposed "death" at the hands of Red Skull, Iron Man activated the Avengers Protocol, effectively reassembling the disbanded team to avenge. Iron Man specifically called in Thor, The Hulk, Black Widow, Hawkeye, and Falcon to raid Skull's new base in Antarctica and avenge Cap. When it was discovered that Cap was alive, the team decided to stay together since the Skull stole Iron Man's Mark 49 Armor and started his own Cabal.
Finding the Infinity Stones
Splintering of the team
After Iron Man repeatedly led the Avengers into battle against Ultron without telling the team Captain America left the team. The next battle with Ultron that resulted in the destruction all Stark Tech (save for the armor he was currently wearing) resulted in Black Widow, Falcon, & Hulk leaving the team as well. Captain America, Black Widow, Falcon, & Hulk formed the Secret Avengers team that is employed and funded by S.H.I.E.L.D.
Reformation of the team and the joining of Ant-Man
After the events of the Ultron Outbreak, Captain America, Black Widow, Hulk and Falcon rejoin the Avengers after resigning from S.H.I.E.L.D. Both Iron Man and Captain America says Avengers Reassemble and Ant-Man starts to walk away. Iron Man then says 'Avengers means you too Ant-Man'. Both Ant-Man and Hawkeye are surprised in which Iron Man says 'relax Hawkeye, our differences makes us stronger, remember?' Ant-Man nudges Hawkeye and Iron Man says 'Avengers Assemble.'
After discovering that the Avengers are more than just it's membership they began to plan for expanding the membership.
The Ultron Revolution
The Avengers haven't been working together on a regular basis after beating Red Skull, Thanos, and Ultron. During this time Ant-Man went solo again and they cancelled their expansion plans. Also Tony begins to use F.R.I.D.A.Y. to replace J.A.R.V.I.S. As a result of their not working together their ability to work as a team has diminished considerably which nearly made them loose to A.I.M.'s trio of upgraded Super-Adaptoids.
One subplot details Baron Helmut Zemo, son of Captain America's old nemesis Baron Heinrich Zemo, finding a working vial of the Super-Solider serum and uses it on himself to gain the youth and strength to face the Avengers defeat and destroy them in order to avenge his father's death. Then he recruits the Masters of Evil (which consists of Beetle, Goliath, Screaming Mimi, Fixer, and Moonstone) and steals a device from Stark Industries called the Inversion Stabilizer that allows them to masquerade as the Thunderbolts (with Zemo going under the alias Citizen V while each of the Masters of Evil above become MACH-IV, Atlas, Songbird, Techno, and Meteorite respectively) in a plot to undermine the Avengers. But after being saved from death by Hawkeye during the robbery and seeing what it's like be a hero, Songbird convinces the rest of the team to turn on Zemo. Together, the Avengers and Thunderbolts expose Zemo and defeat him.
The Avengers must also contend with Kang the Conqueror when he arrives in the present following his brief fight with Iron Man in his time and discovering that some A.I.M. Agents have been using his technology to upgrade some supervillain gear like they did to Whiplash and Spymaster. When most of the Avengers follows Kang the Conqueror back to his time, the Avengers team up with an elderly Thor, a future Black Widow named Layla, and a group of rebels in order to fight the forces of Kang the Conqueror.
When the President signs the New Powers Act, the Avengers are given Truman Marsh as their government liaison where he even replaces Hulk with Red Hulk until the incident where Leader gamma-enhances him enough for Hulk to return.
As the Avengers disassociate themselves with Truman Marsh during the Inhuman Registration Act that involves Registration Disks placed on them, Truman Marsh assembles Red Hulk, Black Panther, Songbird, Ant-Man, Captain Marvel, Ms. Marvel, and Vision as the Mighty Avengers. The superhero fight lasts when the Inhumans Karnak, Gorgon, Inferno, Haechi, Flint, Iso, and Ms. Marvel gets mind-controlled through the disks by Ultron posing as Truman Marsh as he starts the Ultron Revolution. When the Inhumans are freed from the mind-control, Ultron plans to collect radiation to "sanitize" Earth of all human life. With help from Doctor Strange at the time when Ultron takes control of Iron Man's body, the Avengers were able to place Iron Man in another dimension until they can find a way to drive Ultron out. Setting up in an abandoned S.H.I.E.L.D. facility, the Avengers operate from there as Falcon sets up an inter-dimensional frequency for Tony Stark to speak to them through.
- Captain America (Leader)
- Black Panther
- Captain Marvel
- Black Widow
- Ms. Marvel
- Wasp (Hope Pym)
Avengers Academy Students
- Impossible Man (briefly)
- Arsenal (deceased)
- Iron Man (former leader; left team in Civil War Part 4 after Ultron possessed his armor. Remains in an alternative dimension, used to to help via dimensional communications until he can find a way to get rid of Ultron out of his arc reactor)
- Wasp (Janet Van Dyne) 
The Mighty Avengers are a team assembled by Truman Marsh after the Avengers refused to comply with the Inhuman Registration.
- Red Hulk ( Was on the main team. Replaced Hulk because of Truman Marsh, joined in U-Foes. Left team in World War Hulk for medical reasons after absorbing vast Gamma radiation because of The Leader.)
- Black Panther
- Ms. Marvel
- Songbird (Defected to main team)
- Red Skull
- Blood Brothers
- Wrecking Crew
- Doctor Doom
- Squadron Supreme
- Fin Fang Foom
- Space Phantoms
- Midgard Serpent
- Absorbing Man
- Circus of Crime
- Black Order
- Masters of Evil
- Kang the Conqueror
- The Leader
Equipment and Weapons
- All Members
- Captain America
- Iron Man
- Black Widow
In the Avengers Mansion (before it was destroyed) there was a memorial hall with eight statues of deceased Avengers.