Since my "Create a character for RWBY" topic did so well in the past, I figure the logical successor would be to make a topic where people are encouraged to design their own Grimm. Take stuff from mythology, gaming, anime, etc., and Grimmify it. Artworks are optional.
I'll start things off with one kind of Grimm I'd really like to see: a Grimm Rakshasa.
Here's an example of what one would look like (specifically from the Heroes of Might and Magic series):
As a Grimm, I'd have these things native to Vacuo's deserts, preying on travelers and occasionally gathering in a pride (ala pride of lions) to wipe out villages and towns. These Grimm are extremely intelligent and actually make use of weapons, often preferring scimitars, talwars, or other swords. Their speed is what makes them particularly dangerous, able to react quick enough to deflect bullets and able to sprint at an astonishing pace, often catching their enemies off guard with their swiftness. When a group of them work together as a pride, even the most experienced of Huntsmen can find themselves quickly overwhelmed.