Anna is Ellie's mother, known only through a letter Ellie carries and a few remarks from people who knew her. You can read her letter, the Note from mom artifact, from Ellie's backpack at the start of Lakeside Resort.
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.The Note from mom is already in Ellie's pack when Lakeside Resort begins, during The Hunt. Anna admits she never liked kids and hated babies, then says holding her newborn daughter is the best thing she has ever done. She tells Ellie that Marlene will raise her, asks her not to be as stubborn as her mother, and urges her to find a purpose and fight for it. When you turn the page over, Ellie says quietly that she is trying to make her proud.
In the Left Behind chapter Mallrats, winning the brick throwing contest lets Ellie ask Riley a few questions. If she asks about her mom, Riley says Anna and Marlene were close friends from before the outbreak and argued constantly, much like Riley and Ellie, and that Anna was a nurse.
Anna describes herself as stubborn and hard on people. The letter shows she knew she would not live long after the birth and still believed her daughter would grow up strong.
Anna died within a day of giving birth to Ellie, which is why she wrote the letter and asked Marlene to look after her daughter.
In The Firefly Lab, Marlene's recorder 2 in Pediatrics, Room 608, is addressed to Anna. Marlene says she kept her promise for all these years, that she has approved the surgery, and that Anna's daughter will be with her soon.
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.
Corporal "Dickhead"
Corporal "Dickhead" is the nickname Ellie and Riley give a FEDRA officer at the Boston military boarding school. He is only talked about in Left Behind, as the man who took their water guns away.
Riley Abel
Riley Abel is Ellie's best friend from the military school in the Boston quarantine zone and the co-star of the Left Behind DLC. She appears in the Liberty Gardens flashback chapters Mallrats, Fun and Games and Escape from Liberty Gardens, and Ellie brings her up during the main story.