Clickers are people who have been infected for at least one year. The long time elapse has allowed the fungus to spread all over their bodies, blinding them and forcing them to use echolocation to find prey. However, the fungus has granted them enhanced strength, making them fearsome foes in close-quarters combat. Characteristics. Clickers appear less human than runners and stalkers, with faces that are completely skewed and scarred by fungus developed from their infected brains, often only leaving behind a maw of jagged teeth. By this point, whatever clothes the host may have been wearing are mostly tattered and destroyed.