Otherwise known as the Thieves Guild. They originally had a deal with the invading gangs but soon felt the sing of betrayal of the Assassins Guild. They are currently based out of the city of Safeton and operating very cautiously.
The Yellow Ribbon leadership has a long standing relationship with Newrick and did their best to protect the Captain from danger as much as they could, which forced them to over extend and eventually gained them the animosity of the Tainted Ring.
The Yellow Ribbon Leadership is unknown as this time, as the Tainted Ring nearly whipped them all out.