"Alexander Power (Earth-99062)" VS "Alexander Power (Earth-68326)"
Alexander Power (Earth-99062)
Zero-G and his siblings were babysat by Spider-Man. The powered toddlers nearly destroyed their house, so Spider-Man took them to the sandpit but were attacked by Sandman. The Power-Pack and Spider-Man were able to knock him out and turned him into a giant sandcastle. Spider-Man next took them to park, but they wouldn't be allowed in unless they were registered with Iron Man. This increased the conflict between Iron Man and Captain America, but Spider-Man and Power Pack left to go play with the X-Men before they were forced to choose a side. The group returned home and fell asleep
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Alexander Power (Earth-68326)
This Alex Power is an alternate reality, adult version of Earth-5631 AlexPower, and thus shares most of his history. He and his siblings have been secretly fighting Kang the Conqueror for the past 10 years, after he defeated the Avengers and took over the world. He wields Captain America's shield in battle, untill he and his siblings manage to free the captive avengers. Identical to those of Alexander Power (Earth-5631), but with much greater control over them due to 10 years more of experience. At one point, he easily destroys a guards armor by simply targetting it's center of gravity