Iron Man

Iron Man AKA Tony Stark has been a member of the Avengers since the very beginning in 1963 – in fact, he is the founder of the original team and has been a near mainstay on the roster ever since.

The flawed genius has had his problems – with issues like alcoholism, for example – but he is a fearless and powerful hero whose mind is just as important as his mechanical muscle when it comes to defeating any given enemy.

As a result of his profile as an Avenger, Robert Downey, Jr.’s version of the character has become the flagship member of the team – and indeed the franchise – of the Marvel Cinematic Universe. He has had three solo movies and has starred in both Avengers offerings to date – and he is set to continue to headline the franchise in the future, including in this year’s Captain America: Civil War.