Nowadays, villain origin stories are all the same, and this one is no exception. Instead of boring you, reader, you will be given a condensed version of the origin story in question. Here it is: a rich boy fell in love with a rich girl and when a priceless family heirloom of hers went missing, she immediately blamed him and he was ostracized by everyone and then he packed up and turned to a life of crime. Yes, it's all tragic and original, but now that that's out of the way...
ANOTHER "CONDENSED" ORGIN
Nelson Freemont is not the best of thieves, but he's also not the worst of thieves. Throughout his childhood, he had tried to find a hobby he was good at and a hobby he enjoyed; theft quickly became said hobby and growing up in a rich family, there was always priceless junk around the house to steal. When he was about 14, he began to steal from stores. At first it was small things, like a bracelet at a clothing store. But soon, he began shoplifting horrendously expensive jewelry and the like from swanky department stores. Soon, he began stealing daily and he had developed somewhat of a double life. He divulged his stealing secrets to no one save for the one person he could trust, his lover, Lisa. Relatively quiet about the subject as she had been, when her necklace had gone missing, she immediately blamed Nelson and exposed him as the thief he was. Rather than facing justice, he did what any aspiring criminal would do, he ran.
He ran far away and began making a life for himself in the Rogue Isles. Stealing for no one but himself.