Dimitri Lousteau was a NPC and boss in Sly 2: Band of Thieves, and later becoming an unofficial ally to the Cooper Gang in the following games.
Once a passionate young art student, Dimitri gave up on his visionary style after incurring harsh criticism from the rest of the art community. Angry and disoriented, Dimitri turned to forgery and began duplicating old masterpieces... his way of punishing those with bad taste. He learned English from music videos, mimicking them and making it difficult for others to understand.