Aaron Carpenter (Earth-616) VS Aaron Nicholson (Earth-616)

Dr. Aaron Carpenter was the world's greatest living brain surgeon. He knew Bruce Banner from high school, whom he saw as an "insufferable geek." After Bruce Banner was shot in the head, Carpenter was contacted by the Ancient Order of the Shield,[1] disguised as S.H.I.E.L.D., the ones who secretly had Banner shot, and was brought in to operate on him. During the surgery, Carpenter was ordered to place a device capable of controlling the Hulk's transformations in Banner's brain. Aaron hesitated, and thought of killing Banner to prevent the agency from controlling Hulk, in order to save lives. However, Banner was awakened by the anesthetist, whose life had been saved by the Hulk decades ago, triggering his transformation into the Hulk. The agency released a gas in the operating room in order to eliminate the witnesses of their actions, but the Hulk managed to break a wall and allow the gas to scatter, saving the life of Carpenter and the other participants of the surgery.

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The Answer first came to work for the father and son team of Wilson (the Kingpin) and Richard Fisk when they controlled the Las Vegas division of Hydra. He was their top hitman, but he also had an angle, or an answer, to any problem.[2] He volunteered to be the guinea pig for Fisk's attempt to grant superhuman powers, via the equipment of the late Harlan Stillwell. At first the process seemed to have no effect, but he eventually learned he had gained the ability to come up with whatever power was necessary to resolve a given situation.[2] Kingpin The Kingpin sent the Answer to engage Spider-Man and test his abilities. At first the Answer struggled, but each time Spidey attacked him, he gained the ability to counter him. The Black Cat jumped into the fight, but the Answer escaped, having taken both their measures.

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