Mark is a Boston quarantine zone resident who is only talked about. In The Quarantine Zone, Joel can overhear Ronnie telling a friend that soldiers caught Mark using fake ration cards.
Ronnie and another man lean on a wall near a checkpoint. The friend asks where Mark is, and Ronnie says soldiers beat him badly and dragged him off, with no word since. The friend calls Mark an idiot; Ronnie asks what else a man with a family was supposed to do.
It is a quick look at how harsh FEDRA rule is inside the zone, where weeks of half rations push ordinary people into crimes like this.
The talk comes in 20 Years Later, the chapter's opening section, as Joel and Tess head for the checkpoint. On that same walk Tess notes people queuing at a ration line that has not even opened, and soldiers in hazmat suits haul residents out of a condemned building.
Ronnie
Ronnie is a short-tempered Boston quarantine zone resident Joel passes near a checkpoint in The Quarantine Zone. If you stop to listen, he is gossiping about his friend Mark, and he snaps at Joel for staring.
Ellie Williams
Ellie Williams is the 14-year-old girl Joel is hired to smuggle out of Boston, and your companion for most of The Last of Us Part I. She was bitten weeks earlier and never turned, so the Fireflies believe her immunity could lead to a vaccine. You play as her in the winter chapter and in the Left Behind DLC.
Joel Miller
Joel Miller is the man you play for almost all of The Last of Us Part I. A hardened smuggler in the Boston quarantine zone, he takes a job escorting 14-year-old Ellie out of the city, and the drop-off turns into a year-long trip across the country to find the Fireflies.
Malick
Malick is a tough in the Boston slums who tries to block Joel's path in The Quarantine Zone. Tess knows him and sends him back to his seat with a single word.