Wex Vio was a Human male from the planet Corellia who lived during the era of the Galactic Civil War. Vio and his sister Orpa Vio made a living as smugglers, operating from the YKL-37R Nova Courier Lucky Guess, and on occasion they performed work on behalf of the Hutt crime lord Teemo. At some point shortly after the Battle of Yavin, Wex and Orpa were hired by the Geonosian Duke Piddock to transport some cargo to the city Mos Shuuta on the planet Tatooine. The two smugglers traveled to Geonosis to pick up their cargo and the night before they were due to depart for Tatooine they attended a private party that Piddock was holding.