Board Thread:Speculation House/@comment-14138255-20141017020106/@comment-9090085-20141017072959

IamThorn wrote: GlassGolem wrote:

(Anyone else under the impression our "Mysterious Narrator" knows Peter?) Some think it is Summer, meaning she had him as a teacher Maybe. Could be Yang's mom too... or someone else...

Also, an individual Grimm getting spikes as it gets older is not "evolution", that's "growth"(or "adaptation" if if the spikes were specifically to counter some threat the specific Grimm has faced - which I don't think we've seen).

"Evolution" refers to how a species will gradually change over generations. But the CoG are implied to not breed, so they don't have generations and thus cannot evolve.

I personally see the Grimm as an "artificial" existence: hordes of self-improving weapons "born" from "molds" to wipe out humanity. Any "new types" of Grimm are ones made from new "molds", "engineered" to be more effective in battle.