Markku Siltanen

Markku Siltanen is the character you play as in INFRA. He is commonly called Mark, as referenced to a stick note next to his office door which reads, "When in doubt, call me Mark". Mark works for the National Consulting Group, which, after the corruption scandal uncovered in the previous year, the city of Stalburg contracted for the maintenance of crucial infrastructure around Stalburg.

Mark was assigned to survey critical infrastructure at the Hammer Valley Dam area and the Bergmann Tunnels. His mission went horribly wrong, starting with elevators refusing to do anything but fall down.