Captain Dinah Drake, formerly known undercover as Tina Boland is a female meta-human vigilante and the ex-wife of Laurel Lance. She was an undercover detective for the Central City SCIS Department, until her partner and boyfriend, Vincent Sobel, was murdered. She sought revenge for his death after becoming a meta-human due to the S.T.A.R. Labs particle accelerator explosion with the power to produce sonic screams.
Dinah was eventually recruited into the ranks of Team Arrow by Oliver Queen/Green Arrow, who was searching for a successor to the Black Canary mantle. She became a detective in the Star City SCIS Department and helped Team Arrow fight Prometheus.
During the final battle with Prometheus on Lian Yu, Dinah met her rival, Laurel Lance/Black Siren.