Nicely done; it covers the 'human question' very thoroughly. As a devote of comics and their related rpg's, I've had to explain why guys from the other side of the universe were basicly humans with funny forheads and weird skin conditions, but thanks to most popular fiction borrowing from each other (pretty much every comic universe/game universe has a Preserver analog, for example) those explanations are usually accepted by most players.
Of course now, an guy playing Icon can now say he wants to be an AmerInd Augment colonist from North Star.
Speaking of augments, how does the FED justify persecuting one group of people?
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"Yes, it's the Apocalypse alright. I always thought I'd have a hand in it"
Professor Farnsworth