Katie Greenbriar is a fictional character from the video game series The Last of Us. She is known for her resilience and determination in a post-apocalyptic world. As a young survivor, Katie navigates the challenges of a harsh environment while forming relationships with other characters. In the game, Katie's story highlights themes of survival, loss, and hope. Players experience her journey through various settings, showcasing her growth and adaptability. The character's development is central to the narrative, making her a relatable figure in the series.