User blog comment:Zathronas/Speculative author: Where are the Grimm?/@comment-3146930-20140914162543

I also find the lack of Grimm a bit strange, especially considering almost every event so far in the trailer has been shown already in the series with the exception of the Grimm. The only thing I can consider is that whatever Cinder was doing in the tower will lead to Grimm attacking the city in the next few episodes. For example she put some program into the computer at a large communication tower. Maybe it is a signal that will attract the Grimm to the city and other cities with those towers in them (as it was explained all 4 nations have one of those towers).

I do however feel that the Grimm are mistreated as a threat, but I also feel that we the viewers want them to be a threat. The opening narration builds them up as the main foe of humanity, but at the same time that was back when humanity was limited to swords and spears. In the present day, a teenager has a combination chainsaw/boom-stick that they carry on their hip. There are giant airships, cybernetic robots, schools training people in ways to fight the Grimm. So in a way the Grimm haven't gotten weaker, humanity is just at a level where Grimm don't really pose a threat to regular people compared to the past.

As far as Grimm as a species, I feel like we haven't seen all of them yet and there are probably very powerful Grimm out there. I feel like there is a Gravemind-type Grimm out there that may just be dormant, but will appear later in the show with occasional hints here and there. As of right now however we don't know enough about them to really measure how much of a threat they really are.