Senni Tonnika was a Kiffar female and identical twin of Brea Tonnika. The two were known as the Tonnika sisters and became infamous con artists under the New Order. In 0 BBY, they earned additional fame for being in the Mos Eisley Cantina when Luke Skywalker first met Han Solo, but in fact, the "Tonnika sisters" in the Cantina were the Mistryl Shadow Guard warriors Shada D'ukal and Karoly D'ulin, masquerading as Brea and Senni in the course of a mission.