10 Iron Man Fates Worse Than Death
4. Knowing You Unleashed Ultron - Avengers: Age Of Ultron
Taking a dip into the Marvel Cinematic Universe with this entry, and it clearly weighed extremely heavy on Tony Stark that he was partly responsible for unleashing the murderous, maniacal Ultron onto the world.
In the comic book realm, Ultron is a villain forever tied to Hank Pym, aka the original Ant-Man. Created by Hank from his own brain patterns, it didn't take long for Ultron to become fully sentient, to despise Pym, to rewire himself, and to make plans to dominate the entire globe.
Changing this up for the silver screen, the MCU's Ultron came to be thanks the combined efforts of Tony Stark and Bruce Banner. Of course, much like in the comics, Ultron would soon became way smarter than anyone could imagine. Created to be Earth's ultimate defense system, this android soon realises that humans are the greatest threat to the planet, and thus it looks to destroy mankind.
All of this would lead to the events of Sokovia, which in turn led to the events of Captain America: Civil War, which in turn led to the break up of the Avengers. For Tony Stark - and Bruce Banner, for that matter - all of this bloodshed was very much on his hands.