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.
Joel is quiet, blunt and slow to trust. Twenty years in the quarantine zone have made him a man who does the dirty jobs others refuse: moving contraband, roughing up rivals and asking no questions about the cargo. He refuses to talk about the people he has lost and shuts down any conversation that drifts toward his past. He hints to Ellie in Pittsburgh that he has been on both sides of a roadside ambush, which is how he spots the hunters' trap before it springs.
You control Joel from the Boston chapters to the end, apart from the winter stretch and the prologue. He can choke out humans from behind, use them as shields, shiv clickers once you craft blades, and upgrade weapons at workbenches. Ellie and other companions back him up by calling out enemies and throwing bricks, but Joel is the one who has to deal with most fights. He also boosts Ellie to ladders and floats her across water on pallets because she cannot swim.
After the Boston outskirts, Joel calls in an old favor from Bill in Lincoln to get a working truck, drives to Pittsburgh where hunters ambush the pair, and teams up with Henry and Sam to escape the city. In the fall he finds Tommy at the hydroelectric dam outside Jackson, argues with him about handing Ellie over, and finally decides to carry on with her himself to the University of Eastern Colorado.
Joel starts the trip treating Ellie as cargo. Things shift in Pittsburgh when she saves him from a hunter: he hands her a hunting rifle to cover him, thanks her, and later lets her carry a pistol for emergencies. At the ranch outside Jackson he tells her flatly that he is not her dad, then changes his mind on the ride back and keeps her with him.
Sarah is shot by a soldier on the highway on outbreak night and dies in Joel's arms, the loss that hardens him. In the years after he and Tommy survive by preying on travelers as hunters, which drives the brothers apart. At the university Joel is impaled on rebar after a fall and nearly dies; Ellie keeps him alive through the winter while he fights off sepsis, and he only recovers in time to cut through David's settlement to reach her.
In Salt Lake City the Fireflies tell Joel that making a vaccine means removing the fungus from Ellie's brain, which will kill her. He fights through St. Mary's Hospital, kills the lead surgeon and carries Ellie out, then shoots Marlene in the parking garage so she cannot follow them. On the road to Jackson he tells Ellie the Fireflies had given up on a cure, and when she asks him to swear it is true, he does.
The Quarantine ZoneThe Quarantine Zone starts the story proper 20 years after the outbreak, inside Boston's military-run zone in August 2033. As Joel, now a smuggler, you and his partner Tess slip outside the wall to track down Robert, a dealer who owes them guns, and end up taking a new job from the Fireflies.
Lakeside ResortLakeside Resort jumps to winter and puts you in control of Ellie near Silver Lake, Colorado, hunting with a bow and searching for medicine. She runs into two strangers, David and James, and for part of the second half the game switches you back to Joel.
Bus DepotBus Depot opens in the spring of 2034 as Joel and Ellie walk into Salt Lake City, aiming for the Fireflies at Saint Mary's Hospital. The route runs along a highway full of dead cars, through the Logan James bus station and an abandoned quarantine zone, and down into a flooded tunnel full of infected.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.
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.
Tommy Miller
Tommy Miller is Joel's younger brother, a former Firefly who now helps run the settlement at Jackson, Wyoming. He drives Joel and Sarah through the chaos of the prologue, and twenty years later Joel tracks him down at a hydroelectric dam in the chapter Tommy's Dam, hoping he will take Ellie to the Fireflies.
Jimmy Cooper
He is the first infected you see in the game, during the outbreak night in Hometown.