Currently an idea which has been floating around my head is a disgraced knight turned mercenary/bounty hunter. Probably human. Might look into the idea of an Elf though. 

Edit: If possible, I'd like to hear a bit more about the Free City of Bein and Greyreach. Mostly as to the culture of Bein and what it would take for a knight to become disgraced and stripped of their title.