Hah, finally. One of 'em gave me a pack of smokes for "doing a good job." Sweet!
―Marc in the snipers' nest log
Background and early life
Not much is known about Marc's background or early life except that he is a survivor of the Cordyceps brain infection outbreak. He is a member of the Fireflies who worked as a sniper lookout at the University of Eastern Colorado alongside Andrea.
Events of The Last of Us
Marc and Andrea are both members of the Fireflies who managed a sniper's nest at the University of Eastern Colorado. Together, they recorded anything and anyone who entered the premise of the University. According to their log, they seemed to have a friendly relationship—with Andrea "snagging" apples to share with Marc and Marc wishing Andrea a happy Halloween.