James is David's right-hand man in the group of survivors Ellie runs into near Silver Lake during Lakeside Resort. He is hunting with David when they meet her, and he is the one sent back to their settlement for the penicillin she needs for Joel.
When Ellie threatens the two men with her bow, David offers supplies for some of her deer meat and sends a reluctant James to fetch antibiotics. He comes back to find Ellie holding David at gunpoint and draws his own pistol, having overheard that she and Joel were behind the killings at the university. David makes him lower it, and James tosses her the penicillin, warning that the rest of the group will not like this.
James tells the others what Ellie and Joel did at the university, so the men sent to track her ignore David's order to bring her back alive and try to kill her instead.
Ellie wakes up in a cage and sees James cutting up a human body, which is how she learns the group are cannibals. The next morning he holds her down on a table so David can kill her. When Ellie shows them her bite and claims she has infected David, James panics and loosens his grip, and she grabs the cleaver and kills him. David later tells her James was only doing what he was told.
Blondie
Blondie is one of David's men in Silver Lake, a member of the group that hunts Joel and Ellie through the winter. Joel runs into him at the cabin resort in Lakeside Resort while searching for Ellie, and questions him alongside Skully.
Callus
Callus is the horse Joel and Ellie ride from Jackson County to the University of Eastern Colorado and beyond. He first carries Joel when Ellie runs off in Tommy's Dam, and Ellie names him on the road to the university.
David
David is the soft-spoken leader of a group of survivors near Silver Lake and the main threat of Lakeside Resort, the winter chapter where you play as Ellie. He meets her while she is hunting, trades her penicillin for deer meat, and fights infected beside her.
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.