User blog comment:Zathronas/Speculative author: Where are the Grimm?/@comment-5217560-20140915000437/@comment-24891101-20140917044314

That, of course, is one of the big questions, since we appear to have two layers of light/dark motifs. The first is the dichotomy between those with souls and those without, to wit, Man (and beasts, and do note I count Faunus among Man) and the Creatures of Grimm. This is the dichotomy I was touching upon in my motif analysis. The other, which I have left unexamined, and to my knowledge is less discussed, is a similar dichotomy within the soul itself, as Pyrrha said to Jaune.

And the Grimm do occupy an interesting position, since they are not alive, and thus nonanimaferous (outside the Light, as it were) and may be thought of as zoomorphic forces of nature, similar in some ways to Marvel's cosmic entities, Master Order, Lord Chaos, and the rest, though decentralized. Similarly, one would imagine things like volcanos would also be outside the Light.