Star Wars: Bounty Hunters
Black Sun is a criminal organization that has been around since the Clone Wars. As the Jedi turned to military matters as opposed to law enforcement, the Black Sun was able to rise to prominence. Black Sun is operated by Falleen nobles, and many members of the species have at least some kind of affiliation with the organization.
Since the fall of the Empire and the death of the organization's leader, Prince Xizor, Black Sun has been in decline. But, they continue to be one of the more influential organizations in the Outer Rim.