Clickers are one of the infected stages in The Last of Us, appearing in the game and its adaptations. They are not human characters with personal names, but rather a terrifying type of fungal-infected enemy. In the story, Clickers are advanced infected whose bodies are heavily deformed by cordyceps growth, and their vision is destroyed, so they navigate by echolocation. Their role in the series is to serve as a major threat to survivors, emphasizing the danger, horror, and brutality of the post-apocalyptic world.