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.
With Joel sick and food running out, Ellie brings down a deer and is confronted by David and James. David proposes a trade, Ellie demands antibiotics, and James rides off to get them while David waits with her in a barn. Infected attack, and you fight through several buildings with David as your AI partner, and Ellie slowly starts to warm to him. He compliments her shooting and talks about his belief in fate while they wait out the cold.
The chapter's final encounter is a stealth fight in a burning restaurant. David stalks Ellie between the booths, first with a revolver and then with a machete, and listens for her stepping on broken plates. You need to sneak up and stab him several times. On Grounded difficulty he can hear Ellie moving while crouched unless she goes slowly, which no other human enemy does.
David lets Ellie go, then sends men to track her back to Joel. Back in the barn David reveals that his men were the ones who attacked Ellie and Joel at the university, yet he still lets her leave with the medicine. His men shoot her horse Callus, and David chokes her unconscious. She wakes in a cage and watches James butcher a body: the group are cannibals. David touches her hand and offers her a place with them, and she breaks his finger. The next morning they try to kill her on a butcher's table, she kills James and escapes, and David hunts her into the restaurant.
The restaurant catches fire during their struggle and David locks the exit. After both pass out, he wakes first and starts strangling Ellie, but she reaches his machete and hacks him to death. Joel arrives and pulls her off the body. Ellie is withdrawn and quiet for a long time afterward.
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.
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.
James
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.