Klaustreich

A Klaustreich (KLOW-shtrykh; Grimm: KLOW-strysh; Germ. klauen = "steal" + Streich = "prank/trick" or alternatively Germ. "Klau(e)" = "claw" + "Streich" = "stroke") is an alley cat-like Wesen. They are typically known for being jerks in the Wesen community.

Characteristics
When Klaustreichs woge they gain piercing jade green eyes, outward pointed ears, and a feline muzzle that terminates in a pink feline nose. Their bodies are covered in either light grey or brown fur, except their face, which is covered in white fur.

Physically, they are quite strong, able to perform cat-like leaps over a distance of several yards, and they can match blows with a Grimm suggesting superhuman strength, however, their strength is still inferior to Grimms. However, they are powerful enough to sucker punch a Grimm in the face and knock them out. Despite having both razor sharp fangs and claws, Klaustreichs prefer to use the latter in combat, which can cause massive damage when combined with their strength.

They are also significantly more durable than humans, able to take and quickly recover from suffering incredible force, even to the head. One for example, was able to take multiple strikes to the head with a frying pan, having a vase and jar broken over his head, and being repeatedly assaulted, all of which he took and showed no signs of damage afterwards.

Behavior
Women often find male Klaustreichs irresistible, but it never ends well for those who fall for them as male Klaustreichs are very possessive and abusive towards their soul-mates. It is very rare for a woman to escape a relationship with a Klaustreich relatively or completely unscathed. It is unknown how they attract women, be it a physiological feature similar to Ziegevolks, or simply pure charisma. It would appear to be charisma however, as a Klaustreich's hold is nowhere near as strong or as permanent as a Ziegevolk's. Monroe told Nick that it is a good idea to sleep with one eye open when there's a Klaustreich around, as Klaustreichs are treacherous and highly aggressive.

They, like many Wesen, fear Grimms, as both Joe and Shaw expressed extreme fear when seeing Nick and Trubel, respectively. However, Tim did not show fear when seeing Nick, only hatred.

Excerpt from Grimm Diaries
(The following was written by Nick Burkhardt)