By legal and practical necessity, Marvel Studios' upcoming film Avengers: Age of Ultron will have to be very different from the comic book series by the same name. Wolverine can't be involved, for instance, since that character belongs to 20th Century Fox for the purposes of films.
Another big difference? Apparently Hank Pym--the creator of Ultron and a central character in Age of Ultron--will not appear in the feature film, according to its screenwriter and director Joss Whedon.
Some fans had expected this, given the fact that Pym may not be introduced until the Ant-Man movie, in which he is the main character, which comes out after Avengers: Age of Ultron. Still, it's a little confusing. How does one have Ultron without Pym? Certainly it's possible, but it seems like they would be giving up a lot of potentially great stories that deal with Pym's angst over having unleashed Ultron on the world.
Whedon explains a bit below: "A lot of people because we called it Age of Ultron and there was a book, Age of Ultron, just recently, assumed that was the storyline we were doing which is not the case. We are doing our own version of the origin story of Ultron. The other thing is in the origin story there was Hank Pym so a lot of people assumed he was going to be in the mix but he's not."
He also says that the origin will tie more directly to Avengers that the movie audiences already know, perhaps lending credence to the idea that the AI in the film will be created by Tony Stark.
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