Scarlet comes from a heavily focuses matriarchal family where men are treated almost like slaves and or barely tolerated. He has 6 older sisters and when he was born it was expected he would be the 7th daughter. Why his name is often considered a female name. Having a son was considered a failing for his mother and it was left to his older sisters to raise him as his mother would have nothing to do with him.
Growing up, he was often bullied by his sisters and treated worse then the estate's dogs. Because of these he learned he had to be sneaking and lie to just get food as the servants were told to ignore him.
Out around 12 years old, he would often slip out into the surrounding city where he made friends among the street kids where he improved upon his thieving abilities by pick pocketing and burglary. This kept on going for several years until it was decided that at age 16 he was old enough to leave the estate. His sisters kicked him out of the estate which was fine for Scarlet where he had a safe house with supplies stored for him.
Some of his friends decided they wanted to leave the city and see the world and Scarlet joined them. On his travels, his scouting ability was noticed and he was approached to join a mercenary unit. With no other prospects, he agreed and finds himself now a soldier.