Board Thread:Speculation House/@comment-4830106-20130810030606/@comment-4830106-20140607052304

You're right, it's the White Walkers.

But I think that the White Walkers analogy may exist better for the Grimm; the tough ones, anyway. While the humans and faunus are too busy fighting each other, they'll become weakened, and therefore easy prey for the heretofore-ignored Grimm.