Nick jonas dating miss universe
The knights brought back a treasure from Constantinople so powerful that they feared it coming into the possession of their masters.
Over the next several centuries, the Grimms served as the (usually) freelance police of the Wesen world, dispatching those who could not live in peace with humans (by contrast, the Wesen Council enforced the internal rules of Wesen society).
As a general rule, it was the responsibility of the Grimms to hunt down "the bad ones," those aggressive and malicious Wesen who preyed on humans or other Wesen.
The majority of Grimms were only exposed to the Wesen community through these malcontents, leading some of them, namely the Endezeichen Grimms, to consider all Wesen abominations that needed to be exterminated.
It is not clear if all Grimms are genetically related (though it is implied, as on all occasions Nick's referred to any Grimm in question, they are referred to as his "ancestors"), and if so, how many generations back the relationship goes.
Grimms seem to have preference for decapitation and there are many references to them cutting off their victims' heads.