Mark was a police officer in Crystal Lake.
Mark was at the Crystal Lake police station when Jessica Kimble arrived to report Steven Freeman for running down and seemingly killing her boyfriend Robert Campbell. Unknown to Jessica Kimble, Robert had been possessed by her uncle, Jason Voorhees, and had followed her to the police station.
Robert/Jason soon stormed into the station searching for her. Mark and fellow officer Brian were in the bathroom when he entered and went to see what was going on. They eventually found him lying on the floor, having been shot through the head by Steven, who then fled with Jessica. When both Mark and Brian knelt down near the body, Robert/Jason awoke and bashed their heads together, killing them.
He and Brian are Jason's 101st and 102nd victims.
- The character shares the surname with his actor, Mark Thompson.