The film was named after a 2013 Marvel comic series 'Age of Ultron.' However Kevin Feige
explained that that particular comic would not be used as a storyline: "We came up with a few titles, but every month a new comic book appears, and 'Age Of Ultron' is a great title. We had a few other 'Of Ultrons', but that was the best one. So we're borrowing that title, but taking storylines from decades of Avengers storylines." See more
[from title reveal trailer
I don't play well with others...
After all this time, why return now?
Here with a mission, sir? Trying to get me back in the world?
We're not a team, we're a time bomb.
They've gone their separate ways...
They'll come back...
Because we'll need them to.