Originally Posted by Mr. Dent
It's weird how everyone keeps comparing this to "x without Batman".
Try this one: it's like making a story about Frankenstein's Monster without Dr. Frankenstein.
We've been over this many, many times. The only thing that separates Ultron's story from any other uberkiller robot is the psychodrama of Ultron's Oedipus complex with Hank and Janet. That's what's driven Ultron for five decades, even on up to the present-day Age of Ultron story arc (that doesn't have anything to do with the movie title).
So now....we get any other uberkiller robot.