Duel (born 1969) is a Melbourne-born, Australian graffiti artist and break dancer,(John Williams). Starting out painting trains and walls in the 1980s, Duel was one of Australia's earliest accomplished graffiti artists. He featured in the 1994 television Australian documentary, Sprayed Conflict by producer/director Robert Moller which appeared at a number of Australian film festivals and was released on video and later on DVD. Wikipedia
The definitive Wikipedia entry for Duel. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Duel_%28artist%29