Age of Ultron (2013) #3
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Characters
Earth's Mightiest Heroes joined forces to take on threats that were too big for any one hero to tackle. With a roster that has included Captain America, Iron Man, Ant-Man, Hulk, Thor, Wasp and dozens more over the years, the Avengers have come to be regarded as Earth's No. 1 team.
Seriously wounded, young lawyer Jennifer Walters was given a blood transfusion by her cousin Bruce Banner. Usually in better control of her powers and temper than the Hulk, She-Hulk has been a high profile New York lawyer as well as an upstanding member of both the Avengers and Fantastic Four.
Arguably the greatest and certainly the most horrific creation of scientific genius Dr. Henry Pym, Ultron is a criminally insane rogue sentient robot dedicated to conquest and the extermination of humanity.