A3 (Earth-616) VS Aaron Stack (Earth-TRN813)

Along with Number 8, A3 captured Angel. While Number 8 detected other mutant presence, and proposed for further investigation, A3 denied him, stating that their programming was defined for them only to capture one mutant, and that they had nothing else to do than headed back to their base, the Station Alpha.[1] It was seemingly destroyed along the other Sentinels Mk II when they headed to the Sun, believing it to be the source of the mutations and intending to cancel it. See the abilities and functions of the Sentinels Mk II. Search this site for: A3 · A3 (Earth-616).

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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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