In the comic books, Ultron is a robot created by scientist Dr. Henry "Hank" Pym (who later becomes Ant-Man) that develops its own intelligence and rebels, dedicated to conquest and the extermination of humanity. As part of his plans, he creates Vision as a weapon to destroy the Avengers.
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â Don't expect Pym to appear in the film: "In the origin story (of the comic books), there was Henry Pym, so a lot of people assumed he was going to be in the mix, but he's not because we're basically taking the things from the comics for the movies that we need and can use," Whedon said. "A lot of stuff has to fall by the way side."
â The Ultron-centric sequel was planned before the first "Avengers" film. "Since before I even took the job of making the first one, I thought 'Well I don't know if I want to make this movie, but the second one should have Ultron in it," Whedon said.
â Ultron will be represented by different iterations, as he is in the comic books. "Ultron is definitely somebody who evolves so we're going to get a couple of iterations, it's going to be cool," Whedon said.
â Expect a change in tone: "It's a little bit darker than the other film, because Ultron is in the house there's a science fiction element that I think is a little bit stronger than the other film," Whedon said. "Getting the team together was so rousing, but seriously, keeping the team together is a completely different problem."
â The sequel will be more global: "A lot of the movie has to do with (The Avengers') place not only in America but in the world."
â Whedon is looking forward to writing Hawkeye for the sequel, played by Jeremy Renner. "He did get possessed pretty early by a bad guy and sort of had to walk around scowley for most of the movie last time," Whedon said. "So now it's nice to actually have the character there and really see him interact with the other guys."
â "The Avengers: Age of Ultron" will film in March, in London.
Whedon revealed the details during a discussion with "Marvel Live!" at Comic-Con.
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