Board Thread:General Discussion/@comment-3123266-20140303175822/@comment-2127388-20140511194635

Whedon stated that Ant-Man, in either Lang or Pym version, have nothing to do with Ultron's creation. Also, Pym was mentioned in deleted scene/script for Thor. When SHIELD confiscated Selvig's and Foster's equipment, he was planned to say that he will contact Pym for advice as he "got experience with SHIELD". In the end this part was not put in the final version (sadly). Also Ant-Man's (and most likely Wasp's as well) super-powers are not originating from a scientific device to shrink-enlarge himself by "Pym's particles", but more by some chemical substance. Personally I have no idea how that is supposed to work. I will leave it to the writers to explain that.

On a side note and off-topic, I am personally in head thinking of how should "real" Crimson Dynamo in MCU would look like, if he will ever be implemented :)