Dimitri, (full name: Dimitri Lousteau), crosses paths with the Cooper Gang as the first villain in Sly 2: Band of Thieves. Dimitri is one of the members of the Klaww Gang, an evil group that has stolen the Clockwerk parts from a museum in Cairo. The Cooper Gang go on a mission to track down the part to prevent any possible reviving of Clockwerk. Dimitri is found running a nightclub in Paris and is in possesion of the Clockwerk Tail Feathers. Bentley discovers that Dimitri is using the tail feathers to distribute illegal spices to consumers and to commit counterfeiting.

Before Dimitri turned to his life of crime, he was once a passionate artist. Unfortunately, he was harshly criticized and ridiculed for his work. This angered Dimitri, so he decided to engage in crime as retaliation. His plans, however, came to a halt when he was discovered and confronted by the Cooper Gang. After being defeated in his counterfeiting factory by Sly, Dimitri was then arrested and placed in jail by Carmelita. Dimitri's run came to an end.

However, fans were in for a surprise as the Cooper Gang crossed paths once again with Dimitri in Sly 3: Honor Among Thieves. Dimitri is found in the city of Holland. The Cooper Gang ultimately ask Dimitri for his contribution to the gang's ultimate goal of reaching the Cooper Vault. Dimitri agrees, but makes a deal. He agrees to help the Cooper Gang, and they help him retrieve his grandfather's coveted diving gear. This agreement made an official joining of forces between the Cooper Gang and Dimitri, and also turned Dimitri's life around for the better.