Drang-Zorn

A Drang-Zorn (pronunciation: drahng-tsorn; Drang "urge, stress" + Zorn "wrath") is a badger-like Wesen that appeared in. The initial woge is, usually, at the age of thirteen.

Physiology and Psychology
They are known to have a very short temper and very easily enraged, quickly resorting to violence. However, if faced with an adversary that they know could not prevail over, Drang-Zorns would instead take refuge in underground dens that they built for cases such as these, and are quite adept at constructing them.

If a Drang-Zorn were to woge before the age of thirteen they will suffer from a lack of inhibition needed to control their rage and will become homicidal toward anyone who angers them, even towards their own kind. This often leads the parents to resort to great lengths at isolating their children from others for long periods until they learn how to control themselves.

Physically Drang-Zorn are unimaginably powerful exhibited when April Granger despite being 9-years-old was able to overpower a man many times her own weight on two occasions. Like actual badgers, a Drang-Zorns main form of attack is a powerful bite; their jaws are strong enough to sever flesh and bone with ease.

Drang-Zorn are also a sexually dimorphic. Males have a much more severe woge; growing hair all over their bodies, while females keep their normal hair, and just have the features change.

They have also been seen to partially shift by concentrating the woge around their eyes; in April Granger's case, turning them green. However, not all Drang-Zorn have green eyes when woged; possibly only young ones.

Excerpt from Grimm Diaries
"Nasty. Short-tempered. Prone to violent outbursts. Fiercely protective of their offspring."

"As I approached, the Drang-Zorn vanished, I discovered when threatened they take refuge in underground dens."

Trivia

 * Another word for "wrath" in German is Grimm.