4. He's Been In Loads Of Different Hero Teams & Groups
Although Pym co-founded the Avengers, he has actually been part of numerous other teams and elite groups of heroes in the various Marvel universes. He has been a member of a number of Avengers spin-off groups, such as the West Coast Avengers, the Mighty Avengers, the Avengers Academy, the Secret Avengers and the Avengers A.I., while he has also been a member of the Defenders and the Secret Defenders. In addition to those teams, he has also been a part of the Illuminati - an extremely elite and secret group of genius superheroes who work behind the scenes in the Marvel universe to prevent potentially cataclysmic events from occurring before they get a change to gain any traction or momentum.
