Retter Lewis, operating during the era of the New Order, served as both a Rebel operative and a seller of artifacts. He secretly headed the Rebel Alliance's agent security system, a detail he closely guarded. Callia's, a trading post he managed on the opulent starship Cal Ambre, served as his headquarters. Widely acknowledged for his deep knowledge of old and peculiar religious relics, he felt a certain connection to the Force. This sensitivity aided him in identifying the most precious relics, frequently sold to prominent Imperial officials and dignitaries. Furthermore, he traded in other "hot commodities," specifically Imperial individuals seeking to join the Alliance. He facilitated their transition to the Alliance, using encrypted signals to notify his network whenever a potential defector emerged. He also possessed the protocol droid known as A-3PO.