Jonathan Hall Kovacs (also known as Johnny Kovacs or Jon K, born October 20, 1969, in Alameda County, California) is an American former child actor and director.
Jonathan Kovacs appeared as a semi-regular character during the ninth season of Little House on the Prairie and as a regular character on the 1983 series The Family Tree.
He also made several appearances in other popular television works of that time period, in which all of the characters he played were deaf people.
His interest in ASL performances gave birth to Rathskellar (performing arts) in 1998 to showcase the raw beauty of sign language by combining it with visual arts and pulsating music.
It turned out to astonish crowds and quickly became internationally known for thrilling levels of originality and intensity, which were rarely seen in ASL productions at the time.