You likely realize "Cluster Buck" rhymes with something else, and the naming was intentional. A Thugs mastermind not only gets his six permanent "pets", his Gang War power allows him to call up a temporary (less powerful) posse of about 10 more. Things can get crowded in a room, especially if another mastermind is on the team. Buck would often use his battle cry when launching this posse, or sometimes when charging into battle, Leeroy Jenkins-style.
As head of his gang, Cluster Buck keeps himself clean and dresses in his leather motorcycle jacket and pants.