Jason Voorhees is the masked killer of the Friday the 13th franchise, which began with the 1980 film set at Camp Crystal Lake. In the first movie his mother Pamela is the killer, driven by grief over Jason's drowning, and later films make Jason himself the central slasher. The idea that he kills for his mother became a defining part of the character, repeated in sequels, games and parodies. Online, the whisper is reused as shorthand for a horror villain approaching.