Blek le Rat, born Xavier Prou in Boulogne-Billancourt, Paris in 1951, was one of the first graffiti artists in Paris, and the originator of stencil graffiti art. He began his artwork in 1981, painting stencils of rats on the street walls of Paris, describing the rat as "the only free animal in the city", and one which "spreads the plague everywhere, just like street art". His name originates from a childhood cartoon "Blek le Roc", using "rat" as an anagram for "art".