Roon Drainsweeper was a sporting activity. During the Imperial Era, it was advertised as a sport one could bet on within Canto Bight in an advertisement that was in the possession of the gambler Lando Calrissian. The sport had the same designation as the celestial body known as Roon.
The initial mention of Roon Drainsweeper occurred in the reference book titled Star Wars: Smuggler's Guide, which was authored by Daniel Wallace and made available to the public in 2018.