Laurel Lance (Earth 96)

Laurel Lance is a female meta-human, she is a citizen of Star City and a vigilante. Laurel is the daughter of Quentin Lance and Dinah Lance (after whom she was named), the older sister of Sara Lance and the wife of Typhuss Jameas Halliwell. She is a lawyer who holds the position of district attorney and was previously a former legal aid attorney. 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, she chose to use these powers for good, adopted the name Siren and became a vigilante, she became a renowned hero of Star City.

Powers

 * Meta-human physiology: After Laurel was struck by the energy of the S.T.A.R. Labs particle accelerator explosion on Earth 96, her DNA mutated and enhanced her vocal cords.
 * Superhuman sonic scream: Laurel is able to emit a sonic scream that comes from her voice, with the highest known frequency being 250 decibels. Laurel's scream is powerful enough to produce enough force to launch a full-grown human and other heavy objects back several feet. Her scream can also shatter a marble statue, steel arrows and kill a human being by causing internal hemorrhaging. Laurel is also immune to her own powers and can control the range of her screams, creating seismic waves large enough to collapse a building or small enough to enter through the ear, causing internal damage on a fatal scale even if the target has regenerative powers. She is even able to create a sonic bullet by blowing a kiss.
 * Sonic immunity:Laurel is immune to her own powers or any other meta-human with similar sonic scream-based powers.

Weaknesses

 * Vocal cords: If someone or something grips Laurel's throat tight enough, she is unable to use the scream to defend herself.
 * Power-dampening tech: Laurel's powers can be neutralized using power-dampening tech.