User blog comment:Prof. Draco/Invent a Wesen/@comment-5914541-20130525153421

Hammerkopf (Ger. hammer head)

While not exclusively rare, these hammerhead shark-like wesen sure are unique. When woged, the skin becomes rough and is a shade of blue-gray or brown. Strange projections "wing-out" from the sides of the head. On the end of either of these projections is a small, beady eye. The nose becomes a short snout an the mouth fills with dangerous fangs. On top of the head is a dorsal fin, the size of which denotes the hierarchy of the individual in Hammerkopf society.

Hammerkopf are not always ferocious, but seem to be prone to fits of aggression. Their strength is superhuman and they can easily kill a human and most wesen, some have even been reported taking down Grimms. Like Skalenzahne, Hammerkopf can function normally in society, but become quite dangerous when exposed to human blood or flesh. The defining feature of the Hammerkopf is its ability to sense life functions, kind of like a Konigschlange. Between their mouth and snout, when woged, are a large array of sensory receptors that make up for their poor eyesight by not only detecting life functions, but also movement and electrical signals, even if the person being hunted is behind a wall or under a floor. As a result of this, Hammerkopf are often fearless bounty hunters and commonly used by Royals to hunt down others.