Tony Stark (film)/History/Before Iron Man 3

Panic Attacks
After the Battle of New York, Tony starts to have panic attacks and no longer believes that the world is safe, now knowing there are Gods and Aliens out there, and that threat is imminent.

Creating the Iron Legion
In response to this, he builds more Iron Man suits to help in every kind of situation, in case another invasion on earth ensues. This causes friction with his now girlfriend, and current Head-Chief of Stark Industries.