The starship known as the Aggressor served as the flagship for the Nova Blades pirate organization. Prior to 3637 BBY, the vessel suffered a catastrophic failure on Rishi, which resulted in the crew being marooned on the planet. Eventually, the pirates managed to get back into space and established a new base on Rishi in the western mountains of Horizon Island, repurposing the wreckage of the Aggressor into a central location for social activities and storage, as well as housing living spaces, production facilities, security outposts, and other amenities.