Geier (GUY-er) are highly sadistic vulture-like creatures that are known for their ability to move quickly through the trees. Geiers are most infamous for harvesting human organs and blood, preferably while the victim is still alive, to make highly effective medicinal remedies for the Wesen community. The Grimms consider Geiers to be one of if not the most vile Wesen species they have ever documented. Geier means vulture in German.