Originally Posted by misjuevos
ultron could just show up, and have a trail that leads to pym, without ever showing pym. then after or during antman movie we see where ultron came from. or just have the opening of the avengers 2 movie be a guy working on ultron. we never see his face just his back. we then see ultron activate. leading the audience to believe it was just some foolish scientist who created this AI gone bad. later have it revealed in antman that it was pym working on ultron.
Joss Whedon said A:AOU is Ultron's origin story so it doesn't matter what the events of Antman are.