Board Thread:General Discussion/@comment-90.184.166.27-20140419175031/@comment-24.203.66.163-20190304123741

I think they were powerful humans (from the first families of humans or something like that or a reference to a legend or religion I don't know about ); that they have some alchemical powers or something in their blood/DNA that allowed them to "create" the Grimms that fight back the Wessen and control them especially the houndjager. I think that, because of their reproduction between themselves they developed severe sterility(see noble Europeans royal families historically ). Hence the price for a royal baby. In one episode, I am pretty sure Nick's mom explained that the royal families created the Grimms.