Dima was born in Kabino, Chernarus in the summer of '89. An only child to father Yevgeni Petrov who was a Soviet soldier until the fall of the Soviet Union in 1991 when Chernarus gained it's independence, from then on Marko served in the Chernarussian Defence Force. His mother was a nurse who aided the CDF whenever she could during the civil war in 2009. The Petrov family was a military family for generations, Dima always knew he would eventually join when he was of age. He idolized his father and his father loved his son, they would go on hunter trips together when Marko was on leave from the army. Dima was around firearms from a young age, his father got him his own Mosin-Nagant for his tenth birthday and he became familiar with the inner workings of it, learning how to maintain his weapon, proper safety techniques and of course becoming adept at shooting it. He later bought a AKM Kalashnikov from military surplus and familiarized himself with it as it would be the gun he used when deployed with the CDF.
Weeks before being deployed his father was killed while on a peacekeeping mission assisting the UN in Takistan. This crushed Dima but he knew how proud his father would of been when he graduated and began serving in the CDF. Still distraught by his fathers sudden death completed basic training and was assigned to the 76th Mechanized Battalion, apart of the 93rd Bridge, stationed at Balota Airfield in South Zagoria. He was stationed here until 2009 when a young Dima got his first sight of combat with the out break of the Chernarussian Civil War against the Movement of the Red Star (Chedaki). He witnessed multiple atrocities committed by them and grew to hate them, often committing just as vicious acts against them as a sadistic form of payback. The war waged on and Dima adjusted to the violence becoming numb the horrors or war and only had his mind set on defeating the Chedaki and restoring Chernarus to its former glory. The war eventually ended in a hard fought victory for Chernarus and for the next few years Dima was deployed with the UNFORT Chernarussian Defence Forces conducted peacekeeping operations within Takistan until early 2017 when the initial outbreak occurred and he was redeployed to back to Chernarus.