​From Wikipedia, the free encyclopedia Mr. Brainwash ("MBW") is a pseudonym for Thierry Guetta in the film Exit Through the Gift Shop, directed by Banksy. Guetta is presented in the 2010 film as a French citizen who now lives in Los Angeles, having been a proprietor of a clothing store and videographer who evolved into a street artist and gallery artist, influenced by the street artists he documented through video... see more