Patrick Hartl is a multitalented German artist and designer who works in a wide range of media including illustration, graffiti, calligraphy, and digital compositing. A master of handcrafted designs and analog works, and one of the foremost urban calligraphers, Hartl has been involved in making art for almost two decades, and his oeuvre has been exhibited in cities from San Francisco to Amsterdam to Munich. Amongst his artistic practice, Hartl was the editor of Castle, an online magazine about creative art, design, and illustration which has been published quarterly since 2005.