Bjørn was involved in a traumatic experience at the age of 10. His mother and father were both doctors that worked for an organization called "Blank Children" their goal was to alter human genetics to solve both common and severe illnesses. B.C. decided to introduce a sort of cyber human project, which implants the victim with a small CPU connecting to their spinal cord. Bjørn was Blank Children's ideal test subject. His parents were drugged and then violently stabbed in front of him. His life was changed in a matter of seconds with years of planning. A 10-year-old Bjørn was stripped of his life and taken away to start the process.
5 years later the cybernetics were complete and it now enables him to regulate his body, giving him a sort of realization to understand his hunger, health, thirst, and blood levels.
He was then taught and trained to be an assassin specializing in stealth and infiltration. Before the outbreak, he was sent to Chernarus on a mission to retrieve information on the factions that operate inside. While on his travels he ended up crashing his vehicle and was left stranded.