Scien and Klor have been graffiti artists since 1989. 123klan blend graffiti writing and graphic art. For these trailblazers, graffiti writing and graphic art are closely linked and, as they say themselves, "style is the message". Formerly based in France, they now live and work in Montréal, Canada where they continue their creative mix of commissioned and self-initiated projects. Their monograph Design & Designer 020 – 123klan was published in 2004 and an updated version was released in 2007 by French publisher Pyramyd Editions.