Ellie Williams is the central character of The Last of Us series. She serves as the main character in The Last of Us: American Dreams, the playable deuteragonist of The Last of Us, and the playable protagonist of both The Last of Us: Left Behind and The Last of Us Part II.

Ellie grew up as an orphan in the Boston quarantine zone and attended a military preparatory school, where she met and befriended Riley Abel. When Ellie was fourteen, the pair were both infected with the Cordyceps infection