Patrick van Kerckhoven, alias DJ Ruffneck, is a darkcore or gabber DJ and producer, originating from Alblasserdam, Netherlands. An active DJ since 1985, Kerckhoven has also been involved with various record labels. In 1989, he and Jayant Edoo formed 80 Aum Records. When that closed in 1991, he went on to form Ruffneck Records and its imprints Ruffex and Ruff Intelligenze. After a disagreement with parent label XSV Music, Kerckhoven formed Gangsta Audiovisuals and its imprint Supreme Intelligence