The Briil Twins were, in Han Solo's opinion, the most inexpensive con artists in the galaxy. Han Solo and Chewbacca collaborated with the Briil Twins to smuggle hundreds of bottles of R'alla mineral water to the inhabitants of Rampa II, after a swindle in the Cron Drift which occurred sometime between 10 BBY and 3 ABY.
The 2018 canon reference book Star Wars: Smuggler's Guide, authored by Daniel Wallace, was the first time the Briil Twins were referenced. Within the Star Wars Legends continuity, the Briil Twins initially appeared in the 1979 novel Han Solo's Revenge, penned by Brian Daley.