Board Thread:Questions and Answers/@comment-10689544-20130610154708/@comment-61022-20130612033243

There have been many Ultron centric stories given that the character has been around since the 60s. For the most part, most Ultron stories didn't run for more than a few issues and unless they involved him manipulating the Vision or creating a new robot (Jacosta, War Toy, etc) they weren't huge epics to the scale of Age of Ultron.

However, some of the more recent Ultron storlines of note were Annihilation: Conquest which was Ultron merged with the Phalanx and trying to take over the universe. About a decade ago there was the Ultron Unlimited storyline where Ultron wipes out an entire country and tries to build an army of robots to take over the world. That ran from Avengers Vol. 3 #19 to 22.

There is also a storyline in Iron Man Vol 3 where Ultron took over the Iron Man armor, but the issue numbers escape me at the moment.