Board Thread:General Grimm Discussion/@comment-33188476-20160218034303/@comment-24397663-20160218125357

I'd say it must be some kind of ultimate weapon or artefact that can mind-control people. Or a Virus that only effects Wesen i.e. a bio-weapon (hey, we already had possesive ghosts and telekinetic Hexenbiester, anything can happen, right? XD)