Fireflies
The Fireflies are the militia fighting FEDRA's rule and searching for a cure, led by Marlene. Their slogan, look for the light, is painted across the ruins, and their deal with Joel and Tess to smuggle Ellie out of Boston starts the story.
- Threat
- High
- Type
- Human
Good to know
- Members wear yellow or green, and each carries a pendant to tell them from spies.
- The Boston Fireflies are lightly armed; most of the ones you see there are dead or captured.
- They once kept a lab in the science building of the University of Eastern Colorado, then moved to Saint Mary's Hospital in Salt Lake City.
- They helped citizens drive FEDRA out of Pittsburgh, but the rebels turned on them afterward.
- Their pendants are a collectible set in Part I.
Spoiler: Fireflies as enemiesSpoilerShow
The last enemies of the game are elite Fireflies at Saint Mary's Hospital. They wear body armor and helmets and carry flashlight-mounted assault rifles that can drain your health in one burst, with some using El Diablos, Shorties and shotguns. Smoke bombs help break their sightlines.
Spoiler: the hospitalSpoilerShow
The Firefly surgeons plan to remove Ellie's brain to try for a vaccine, which would kill her. Joel kills his guard Ethan, fights through the hospital, kills the head surgeon Jerry Anderson and, in the garage, Marlene. With their leaders and the cure gone, the remaining Fireflies lose hope.
- BostonBoston, Massachusetts is the first region after the time skip and the city where Ellie grew up. You play The Quarantine Zone and The Outskirts here, and Left Behind's flashbacks with Riley take place in the same city. FEDRA holds the North End as one of the last working quarantine zones in the country.
- PittsburghPittsburgh, Pennsylvania is a former quarantine zone now run by hunters who ambush anyone passing through. Joel and Ellie spend two chapters here, Pittsburgh and The Suburbs, and meet the brothers Henry and Sam. Expect heavy human combat and the largest pile of collectibles in the game.
- Saint Mary's HospitalSaint Mary's Hospital in Salt Lake City is the Fireflies' main base and lab, the destination of Joel and Ellie's whole journey. You fight through it in The Firefly Lab, the last full chapter, which has one section, The Hospital, and 5 collectibles.
- Salt Lake CitySalt Lake City, Utah is the last stop on Joel and Ellie's search for the Fireflies. It is an abandoned quarantine zone where the Fireflies hold Saint Mary's Hospital, and you play the Bus Depot and The Firefly Lab chapters here in spring 2034.
- University of Eastern ColoradoThe University of Eastern Colorado is the Boulder campus where Joel and Ellie expect to find the Fireflies in The University chapter. You search it on horseback and on foot through the Go Big Horns and Science Building sections, and it holds 17 collectibles.
Related enemies
- Human
FEDRA
FEDRA, the Federal Disaster Response Agency, is the military government that runs the Boston quarantine zone. Its soldiers are the best-equipped enemies in the first chapters, and you fight them while smuggling Ellie out of Boston.
- Infected
Infected
The Infected are people taken over by a mutant Cordyceps fungus, and they are the main threat between every human fight in The Last of Us Part I. In Part I and Left Behind you meet four stages: runners, stalkers, clickers and bloaters, each harder to kill than the last.
Image: Naughty Dog / PlayStationInfectedBloater
Bloaters are stage four infected covered in armor-like fungus. They are slow and blind but kill you instantly if they grab you, and they throw bursting sacks of mycotoxin from range. Fire is the way to beat them.
- Human
David's Group
David's group are a group of survivors from a town at Silver Lake, Colorado who hunt Joel and Ellie through the winter. You fight them at the University of Eastern Colorado, in Left Behind at the Colorado Mountain Plaza, and around Lakeside Resort.