A safe, SPOILER FREE area to discuss the interesting monsters known as the Grimm. So far, we have the Beowolves, a type of bird (most likely based off of a Vulture or other type of Carrion eating bird), a Giant Scorpion, some sort of bulked up monster (possibly the official version of the Beowolves, or a brand new monster), and if the intro is to be believed, atleast a Giant Snake and a Giant Boar. So far, they all seem to share a unique mask like object, approximately here their faces (or equivalent) would be. Whether these are natural parts of the Grimm, or some sort of control device, remains to be seen. Besides being known as monsters, and most likely allied with the dark forces of the land, we don't know whether they are mindless beasts, or intelligent creatures.