Re: Ultron! We Would Have Words With Thee! Official Thor/Chris Hemworth Thread
I think Stark creating Ultron fits. He's already created an A.I. with Jarvis. And he makes suits of armor that can assist him in combat, whilst being controlled by Jarvis through Tony's commands. If he dares to go even further than Jarvis and create a more advanced A.I., that would be believable considering Stark's character. Always creating and advancing in his technology. And of course, he'd make Ultron's body as well. Seems to really fit to me.