Board Thread:Speculation House/@comment-3146930-20140523234620/@comment-3146930-20140524141744

There are two ways of looking at it. As best we can figure, Grimm have been around since before the arrival of mankind on this world (going by the opening narration). Before that, possibly only the Grimm existed; a bunch of no face identical monsters. So either the Grimm simply made themselves or there was another creature that made them. I mean the narration says that Humans were born from Dust (not like the Dust in the series, but a more ancient form of Dust that apparently breaths life), so Grimm may have been like the world's first attempt at creating life based on a concept. Humans and possibly other animals were given life using Dust.

There also could be the idea of some ancient creature making Grimm and the world gave birth to Humans to balance the scales. Grimm are said to be creatures of destruction, so humans could be creatures of creation to balance the world. Of course to be creative, you need free will and imagination; two traits that could be good or bad depending on how they are used. Pyrrha may have also hinted at this too, as she says that people have light and dark inside them; meaning that while Grimm only have darkness and so only destroy, humans have the potential to destroy and create.