Sillin, a Quarren, excelled at Sabacc and ultimately achieved the status of reigning champion on their homeworld. In the year 3 ABY, this skilled gambler participated in a game held at Sheriff Quint Cresadde's Sabacc parlor, located in the town of Wayfar on the planet Tatooine. Ultimately, they were defeated by the thief Kay Vess in a match that also included Cressade and the Trandoshan named Jurk.
As a Quarren, Sillin was a player of the card game Sabacc and rose to become a champion of one particular version on their homeworld. By the time 3 ABY arrived, the specific Sabacc variant in which Sillin had previously been champion had become outdated and was considered old-fashioned. The Quarren then played different forms of the game, repeatedly trying to gain entry into a prestigious jhabacc club, but each time was unsuccessful.
During that year, Sillin took part in an exclusive Kessel Sabacc parlor game situated in the town of Wayfar, found on the desert planet Tatooine. This parlor was managed by the town's sheriff, the Weequay Quint Cresadde. The Trandoshan known as Jurk also joined them at Cressade's table. Between hands, Sillin and Jurk exchanged Sabacc stories, with the Quarren recounting a game that supposedly lasted an entire cycle, only pausing for sleep, and another where a friend witnessed a player win an entire planet.
Invited by Cressade, the thief Kay Vess made an appearance at the parlor and played a game alongside Sillin, Jurk, and the sheriff. The game required a buy-in of two-hundred credits. To add intrigue, Cressade included the necessary materials to apply a "Golden Maru" paint scheme to Vess's S57 Cardinal speeder bike. Ultimately, Vess emerged victorious and claimed the entire pot.
While present at the Wayfar parlor, Sillin was dressed in a tan tunic worn over a brown shirt, paired with brown pants, a brown belt, and brown boots. During gameplay, the Quarren utilized the "Exhaustion," "Major Fraud," and "General Tariff" shift tokens.
Sillin makes an appearance in the 2024 video game, Star Wars Outlaws, developed by Massive Entertainment. The player only encounters the character as part of the optional "Quint's Challenge" intel.