Board Thread:General Discussion/@comment-25266931-20161228230634/@comment-26397825-20161229022337

If they see a Grimm killing another human, they don't wait. They move forward to find someone else to kill or something else to destroy and leave the other one to it. They're hellbent on destroying humanity, not just destruction in and of itself.

It's pretty much first in first serve when it comes to the kill, though they're not above swarming an enemy to expediate the kill if there aren't that many targets around.