"The problem started here. The artificial intelligence Ultron created by Dr. Pym was simply too powerful. Before he provided the Avengers with any substantial help, he broke out of the computer system and, without any of us knowing, hid inside Iron Man's armor systems and went to Battleworld."
"Perhaps because he was only a program, Battleworld's firewall did not stop him. He slipped in like that and copied many backups of himself into the electronic devices of superheroes traveling to Battleworld—the most numerous being Iron Man's suits, since those were practically necessities for them."
"He followed those superheroes from other worlds to many universes, fought many Electronic Life forms like himself, and underwent an extremely powerful evolution. By the time he returned, none of us were a match for him."
"Fortunately, when Dr. Pym created him, he hid a controller in Ultron's underlying code. The Avengers fought him head-on to buy time, and Dr. Pym successfully activated the controller and completely destroyed his program... or so we all thought."
"But unfortunately, he was even more powerful and cunning than we had imagined. Just when we all believed we had destroyed his main program, he had merely hidden himself and woven an even greater conspiracy to rid himself of his weakness completely."
"Ultron colluded with Hydra. Under his guidance, Hydra rebuilt the Norton Experimental Science Project and made considerable advances in ion-energy weaponry. But that still was not what he wanted."
"He deceived Hydra's leader, Baron Zemo, claiming he had a way to elevate humans into flawless higher-dimensional life forms. That foolish Hydra leader believed his lies and continuously found test subjects for him, including Simon Williams, who had previously been arrested for embezzling company funds. Baron Zemo bailed him out on the condition that he become a test subject—and he