Publicity photo of American actor Ron Palillo promoting the Tuesday, September 9, 1975 premiere of the ABC television series Welcome Back, Kotter. (Note: Although the image was distributed to promote the subject's role on the series, the subject does not appear to be depicted "in character".)
About Ron Palillo
Ronald Gabriel "Ron" Paolillo (April 2, 1949 – August 14, 2012) was an American television and film actor and teacher. He was best known as Arnold Horshack on the ABC sitcom Welcome Back, Kotter (1975–79).