Sly Cooper is the main leader and the thief in the Cooper Gang, he has his two best friends Bentley and Murray by his side, and he is very good at stealing items. He is a devious raccoon, and he has many decendants. Sly watched his parents get killed by the Fiendish Five, and they stole the Thievius Raccoonus, and Sly goes on a journey to get his families book back! He does and he is now apart of a really great team!
Murray is the "brawn" of the Cooper Gang, and he is very strong, but seems to look kind of fat in Sly Cooper: Thieves in Time and he looks very different. He used to be very weak and sort of a tiny guy, but between Sly and the Thievius Raccoonus and Sly 2: Band of Thieves, it was in the comics that Murray busted his butt and worked out, to become a brute and a tough guy, the fighter. Dr. M told Murray that he was much stronger than McSweeny ever was, and Murray is most likely a strong man, and he will play a major part in Thieves in Time.