Hunted: You had a traumatic experience when wild beasts attacked your home perhaps even killing your family, you bare a scar from that attack (Detrimine the nature of your injury)
Martial training: In adolescence you trained with the weapons of your people and learnt how to use them proficiently (work with your DM to determine details)
In a dark alley at night, you are attacked by thugs. Before they can take anything, they turn white with terror and run away. You discover that you have a guardian ghost, a wise, benign spirit who accompanies you (work with your DM to determine details)