User blog comment:ADour/Official title for Marvel's The Avengers sequel announced!/@comment-1671874-20130721222300/@comment-3406131-20130725164954

"Never got that Banner was much of a tech guy. If he was, he probably wouldn't have become the Hulk in the first place."

In the comics, he became Hulk because he wanted to save a life (and was betrayed by a Russian agent).

Jarvis being Ultron would be interesting, with something to bring it to became it: A Stark or Banner upgrade, a magical trick of Loki to awake the A.I., anything. And the robot bastard could take control of all the armors. (If that hadn't been done yet, I haven't seen yet Iron Man 3)

Hank Pym's Ultron is fundamental for his own story, but I'm not sure having the same story would be interesting. But I still think Pym would be great, at least in S.H.I.E.L.D.