I wouldn't be surprised if no FF characters make their way into this. Squaenix already has their Battle Royale game and I'm not entirely sure they'd give the rights for those characters.
But yeah, really hope there's a good cast, because right now Kratos and Sly are the only ones that interest me.
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*Lives in the Future*
http://img.imgcake.com/vaga/0vvvwgifem.gif