For Arya: To re-create this "Games of Thrones" character, wear a brown leather jacket with a high neck or turtleneck underneath. Pull half of your hair back to create a half-up, half-down hairstyle.
For Gendry: You're going to need a little dirt for this one. Pull on a fur jacket or vest, and rub your face and body with dirt to capture Gendry's typical look.