Blek Le Rat stands as the undisputed pioneer of stencil street art, beginning his revolutionary work in 1981 Paris and fundamentally shaping the trajectory of contemporary urban art. Born Xavier Prou, this French artist introduced sophisticated stencil techniques to street art, moving beyond traditional graffiti tags to create complex imagery with powerful social and political messages. His iconic rat symbol became synonymous with urban resistance, representing the forgotten underclass and serving as a metaphor for urban survival.