Black Siren

Black Siren also known as Dinah Laurel Lance is a major villain in the Arrowverse and is Earth-2 counterpart of Black Canery. She first appears as a villain and henchmen to Zoom on The Flash. She later appears on Arrow season 5 as a secondary villain and season 6 as one of the secondary villains turned anti-villain. She has work for Zoom, Prometheus and Cayden James.