Ari Lehman is an American actor and musician, best known for his role in the 1980 horror film "Friday the 13th". In the first film in the series, Ari Lehman played the role of Jason Voorhees as a child. This is the character who emerges from the lake at the end of the film to grab the heroine Alice, in one of the most iconic scenes of the film.

It is important to note that the character of Jason Voorhees takes on different forms in the various films of the "Friday the 13th" series, with Ari Lehman only playing the younger version of the character in the first film. Throughout the series, Jason is depicted as a masked killer, often wearing a hockey mask.

After his appearance in "Friday the 13th", Ari Lehman pursued a musical career and played in several bands. His brief but recognizable appearance in the first film in the series helped establish Jason Voorhees as one of the most iconic characters in horror cinema.