The Tyriss Cluster
A collection of about six dozen star systems located spinward of the Alliance center and hubward of the Taltakien Realm, the Tyriss Cluster is a region dominated by the wrythak species and their minions.
The wrythak are as powerful and inteligent as they are calous, selfish, and greedy. Which is to say, a lot.
They are not native to this region of the galaxy, but many of them have migrated to the Tyriss Cluster over the last few thousand years after the destruction of their origional home worlds in a great interstellar war.
You could say the Tyriss Cluster is lawless, but in truth the only law is the pleasure of the wrythak masters. Anything that serves them is good and anything that displeases them is ruthlessly snuffed out.
As such the region is a haven for some of the most despicable practices in the galaxy. Black marketeering, smuggling, graft, ruthless mercenaries, organized crime, slavery, and black technologies can all be found here and your only protection is the whim of the wrythak masters and the weapon on your hip.