Sam Harv never relied on anyone but himself. Ever since he could remember he was alone in the back alleys. He had to beg to get money and avoid thieves that would gladly take his money. At age 6 he saw a kid complaining about his ice cream tasting funny and then threw it on the ground. Sam then realized if others can afford to just throw away food like it was nothing, than why couldn't he just take some money to get a little food.
After that sam became a pickpocket and a very good one at that. He became notorious in his neighborhood but sam was smart enough to cover his face and act sick so he wouldn't be recognized. For 3 years he would pickpocket random strangers and when they noticed and gave chase he would lose them in the twists and turns of the back alleys.
At age 9 he wanted shelter but stealing from people passing by yealded low rewards so he upgraded to breaking into houses. In the beginning he was a little shaky and almost got caught by the police more than a few times. However thanks to his speed he could usually lose them. He would take jewelry, things that looked worn out, and musical instruments. He never took any electronics because he didn't know how to use them and couldn't understand their value. But he saw jewelry in many shops, really old things in antique and thrift stores, and people playing musical instruments in the streets.
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At 13 he finely got enough money to get a apartment but still needed to steal from others to keep it. By now he was getting really good at thieving and upgraded to taking from businesses and the higher class civilians. He was able to stay hidden from camera's and other people's eyes so when they realized they were robbed it would be too late. From then on he had to be careful of police and gangsters when he went out thieving since the risk is equal to the reward.
At 17 he entered school to keep up the front of a normal student to the government while stealing when the sun goes down. Because of a life of crime and having no one there for him he had problems socializing with others. Of course bully's picked up on this and tried targeting him. However thanks to sam's abnormal speed they never got further than a few threatening words. Sam thought that this would be his life until he was arrested or died.
Looking like a normal person to the government that was bullied while secretly having thousands of dollars stashed away. However fate had a different plan for him.