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@Flux, I popped into the megami wiki: http://megamitensei.wikia.com/wiki/Metis - Since I'm on a computer that can't do spoiler tags, scroll down to "Metis's true identity is finally revealed late in-game". She seems like a separate character, but that description seems to be in line with the latest mandate. So I guess it should be on the Aigis page? Metis's description on gb needs to change as well.