The ISSP (Inter-Solar System Police) is the equivalent of a police force in the universe of Cowboy Bebop. In keeping with the noir tone of the series, the ISSP is corrupt and engages in illegal activity (such as the creation of Mad Pierrot). Due to its inept officers, it often puts bounties on the heads of wanted criminals that are able to escape the law. However, as seen in Knockin' on Heaven's Door, the ISSP is capable of serious activity if warranted.