Goran Mladić was born in Belgrad where he grew up in a very poor family. At an early age he started his criminal career and quickly gained a reputation in the underground for being effective and smart. He started earning money and recruiting people to start doing bigger jobs that would increase his income to millions. He was a very ruthless person who didn't hesitate to get rid of his competition through means that didn't lead back to him. After a while he started getting into the arms business and saw an opportunity to get weapons from the country Chernarus after the civil war. He gained good contacts after some work and started getting steady supplies of weapons back into Europe. During one of his travels to Chernarus to see if he could get some new contacts the outbreak happened and he got stuck.
He's been surviving by being street smart ruthless. He is also known for never letting someone cross him and he'll do anything to get back at them.