A.C. O'Connor (Earth-616) VS Aaron Stack (Earth-TRN813)

A.C. "Ace" O'Connor was a reporter who got involved in the mysterious robot serial killer story surrounding Rom, Spaceknight. Unknown to the world at large, Rom was actually a heroic figure eliminating evil aliens called Dire Wraiths who had infiltrated the Earth using their shape-changing powers. To human eyes, Rom was killing random people with a ray gun, reducing them to ash. In fact, Rom's Neutralizer was banishing the Dire Wraiths to Limbo. [1] Ace was tipped off at first by the fact that all the "victims" of the robot killer in Clairton, West Virginia all shared the same birthdate. Ace's investigation brought her to the government program Project: Safeguard where she managed to capture Rom's Neutralizer in action on film. Upon developing her photos, she discovered the camera was able to capture what the human eye could not, showing an alien creature disappearing into Limbo instead of the "murder" of a human being.

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When Iron Man and his allies, including Machine Man, followed Arno Stark to the Stark Space Station to stop his plan to mentally control all of humanity, the Extinction Entity arrived. Now convinced that Arno was right, Tony and his allies were rallied by him to fight the attacking monster. They were joined by Earth's heroes, and the Extinction Entity was ultimately defeated when Arno willingly assimilated with it, causing it to explode due to his paradoxical nature as a human who was more of an A.I. at heart. Arno survived, and was hailed as a hero. The scenario that took place in this reality manifested on Earth-616 in the form of a virtual dream within the eScape that Arno Stark was submerged into by Tony Stark when he encased Arno in his Virtual Armor in order to stop his plan to take control of humankind to combat the non-existent Extinction Entity which was a delusion caused by his relapsing illness.

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