According to screenwriter Justin Theroux. Iron Man 2 will revolve around the nature of identity.
He told MTV his thoughts for moving the sequel on from the first instalment: “The obvious thing to improve upon – well, it’s not even an improvement it’s just something to embrace – which is that he’s now a hero that lives in the real world. That’s unique.”
He is referring the to the fact that (SPOILER ALERT) Tony Stark revealed to all at the end of the first movie that he was the iron-clad super-hero, with the script for Iron Man 2 seemingly set to resolve around the problems this brings up.
This aspect of the character, says Theroux, is “something that we’ve made a real decision to run towards rather than away from.”