User blog comment:BenRG/Volume 2 Trailer/@comment-19933501-20140706233323/@comment-3146930-20140706233602

We were sort of told something like that would happen and has long been speculated of happening, even if we haven't seen it with our own eyes yet. During one of the production diaries, we were told that we would see what the Grimm were capable of, so I'm excited about it; there is just nothing really to go on there besides "Hey, there are three Grimm in the city."