KATSU is a prolific artist, vandal and hacker who emerged in New York City in the late 1990s. He tags both with “KATSU” and has also developed a single stroke skull icon.He has executed a number of high profile pieces that have brought him both recognition and notoriety. Within the graffiti world, KATSU is often considered an anomaly for conceptually blending vandalism with commercialism and technology. As a result his work includes traditional graffiti, digital media and conceptual artwork. KATSU is infamous for his use of customized fire extinguishers as a graffiti tool most notably used in his vandalism of the Museum of Contemporary Art in Los Angeles. In 2011 he replaced approximately 100 phone booth posters around New York City with fake advertisements featuring his tag juxtaposed with famous personalities and corporate logos, such as Nike and MoMA.