Laurel Lance (Earth 67)

Laurel Lance is a female meta-human who is a former citizen of Star City of Earth 67 and a current resident of Star City of Earth 97, as well as a reformed meta-human criminal-turned-vigilante. Laurel is the daughter of Quentin Lance and the girlfriend of the Earth 67 Typhuss James Halliwell. After exposure to the dark matter released from Harrison Wells S.T.A.R. Labs particle accelerator, Laurel gained the ability to scream at a high frequency.

Being bitter and heartbroken due to her mother's death, she chose to use these powers for evil, adopted the name Black Siren and became a high ranking lieutenant of a meta-human group led by Hunter Zolomon/Zoom.

Laurel was brought over to Earth 97 to participate in the Metapocalypse and personally fought Barry Allen/The Flash, until she was defeated by Team Flash and imprisoned at S.T.A.R. Labs pipeline.

Half a year later, she escaped from the S.T.A.R. Labs pipeline, a year later Laurel became good and gave up a life of crime and became a hero. She maintains a strained relationship with Team Canary, especially Dinah, who are hesitant to trust her after everything she is has done. Though, in time, during her hunt for Diaz, she became friends with Felicity Smoak and Typhuss James Halliwell. (Black Canary)