Roquefort Dupont is the main antagonist from the Spy Mice book trilogy. He is a cruel crime lord of the Washington D.C. rat underworld and hates all mice in the world. Being a of descendant a famous rat king (as he says to everyone) whose servants were mice, Dupont can't stand the current poor position of rats that have to live sewer (although it fits well to his terrible breath) while mice can live up in Washington D.C. Therefore he deeply hates all mice, believing they don't merit to have a tail, as they act like humans. Dupont has a collection of mouse tails and ears on the wall. However, it also contains rat one, meaning not even his own henchmen can't feel safe in front of him.