Born in '87, Marek was apart of a family that prided itself on their intellect. His father, a surgeon that hardly spent time with his family due to the pressing demands of his day-to-day work and his mother, a university professor that had her head buried in her student's papers rather than her own son's education. Marek only followed suit, excelling through high school and placed well with his results. His only brother, Sergei, died in a car accident at the age of 24 with his fiance; his whole family is in distraught. Marek used this pain and suffering as fuel, forcing himself to move away from Moscow and from the hefty sum of money his parents gave him, he moved to the Miroslavl university where he studied a dual-bachelor's degree in Nuclear engineering and Radiology. His teacher, Aleksander Gusev paid great interest in him - Marek and Aleksander oftenly held intellectual conversations about the course which they were both highly interested in. Several years later, he left with both degrees at his side.
After parting ways from his former teacher and the university, he was hired by the Kurskayan powerplant to assist with the operation of the RBMK reactor.
Strife struck across Chernarus, which called to him. He never knew why it exactly called to him, but it did. One day, after following the day-to-day routine, the Nuclear Power Plant manager approached him with a letter from his old friend and colleague, Aleksander. Detailing an opportunity to discover the hidden mystery behind the biological outbreak in Chernarus; as radiation had been detected in some areas initially.
When the infection spread, he was already on the way to Aleksander - his path to join the Nuclear, Biological and Chemical Protection Troops of Chernarus, was only made more difficult.
Reaching Chernarus - he began to look for the people that he had sent letters for and was on a journey to find Aleksander.