12. Iron Man
Iron Man is one of the many superheroes who has been part of ‘Avengers’ initiative. But in the MCU, he was the first one signed up by Fury and since then he has become the most recognized and popular Marvel hero. In comic-book title ‘Ultimate Comics Ultimates #27′, the planet was surrounded by dark forces who were trying to steal Infinity gems to destroy the entire mankind. But Iron Man hid them in his mind. The mutant speedster Quicksilver found out and it was later removed by Reed Richards.