Yevra Sey was a Zabrak female Sith from Iridonia who trained at the Iridonian Sith Academy during the Iridonian Civil War. She met another Zabrak Sith named Darth Matas who she would fall in love with and eventually marry him. She would join the Sith Inquisitors and would be a skilled assassin. She would have offspring with Darth Matas who are Sirak Kolar, Dishi'ra Kolar, and Maris Kolar.