Krystal is either an assist trophy, or more likely she is part of the Subspace Emissary story line.
I don't buy this rumor for a second. The final roster was revealed way back in December. Also it does not account for why America got a much larger delay than Japan. And the details of the deal seem like they would have been worked out more than a month before release. Also, there are more than just Geno who didn't make the final list and was in the top ten for fan picks (hai2u Krystal). Nothing but a rumor.







