Newly revealed Avengers: Age of Ultron LEGO sets may have revealed some key plot points of the summer film. Spoilers follow. Movie Pilot reports that pages from the upcoming 2015 LEGO catalog hint at a few significant moments. Some sets show moments we expected, like Iron Man's "Hulkbuster" armor that we saw in the trailer. That set also includes Ultron and Scarlet Witch, implying they may be involved in the Hulk vs Hulkbuster match.