Traff was an Ugnaught child who resided in Cloud City on Bespin. Alongside Moxxin and Vanraya, Traff stole the Cantonarive crown coin from Baron Administrator Lando Calrissian, and the three took it to the crime boss Wonn Ionstrike in the hope that he would reward them for the coin. Calrissian, however, convinced the children against giving the coin to Ionstrike after telling them that he planned to use the coin as payment in a deal that would help protect Cloud City from the Galactic Empire.