Sergei grew up just outside of Moscow. He grew up mainly on the streets and ended up getting involved in dubious activity. Starting off running drugs for a minor dealer, he built dangerous group. He learned fairly early that the police rarely suspected children. So he began using them. Training wayward children in the art of smuggling, weapon usage and basic tactics, under the guise of being a caring man looking out for lost young ones. He amassed dozens of children that ended up working for him. He grew to actually care about some of them, but most were simply tools. His son was among them, and he treated him harshly. He didn't want a weak child, and he wouldn't let fatherhood be used against him. He ended up squirreling away a fairly decent amount of cash but his operation was hit HARD. He had drawn too much attention and some of his child soldiers were caught. They were hardened criminals, but still children, and being selfish they ended up selling Sergei out to the authorities. This was 10 years ago. After being caught they only had a bit of evidence that they could pin on him, but he still spent a decade in a prison mining facility. This place was more dangerous than his world on the streets ever was. He was not the hard ass here. He was beaten, stabbed and a blasting cap "accident" had blown out his left eye. With poor medical care his scarring was heavy. After he was released, he gathered his son, or at least who he thought was his son and headed to the quarantine zone... there were children that needed his help. And here, no one knew who he was. How he looked wouldn't matter. And people wanted to help children. He could make a fortune in Chernarus.