Dinah Lance was born into a family of crime fighters: her father Larry Lance, was a police officer and her mother was the original Black Canary.
When Dinah was nineteen, she decided to become a crime-fighter, taking on her mother's costume and identity as the Black Canary. Due to a curse placed upon her at childhood by the Wizard, Dinah developed a 'Canary Cry'.
Shortly after doing so, Dinah became a founding member of the Justice League of America. Dinah recommended the name in remembrance of the team her mother was part of: the Justice Society of America. It was during this time Dinah first met Green Arrow (Ollie Queen).
Black Canary worked with the JLA for many years. Her friendship with Oliver soon blossomed into a romance. When Oliver left the JLA and moved to Star City to work on his own, she soon followed him. She continued to work solo and with the JLA until Green Arrow decided to settle down in Seattle.
Canary Cry: possesses a metagene that gives her a potent sonic attack, able to damage and stun foes or objects. Her scream is able to shatter metal. Possesses a incredible level over her vocal cords. This enables her to mimic sounds and generate any sound she desires even developing several abilities.
Disruption: causes a Incredible amount damage to non-living targets, and a Remarkable amount of damage to living targets, stuns people in a entire area.
Sound Disruption: Remarkable ability to disrupt sound and sonic powers.
Martial Arts Master: Making her one of the most skilled martial artists on the planet. She has also been trained by Wildcat, who is formerly the Heavyweight Champion of the World, in the art of Boxing. Has also been trained in Dragon Style Kung Fu and pressure point fighting. Thanks to Wonder Woman, Dinah has been trained in Amazon martial arts but is strictly a novice in that kind of fighting style.
Master Tactician and Strategist: Dinah is also considered a strong leader and strategic thinker, which has led to her being made Chairwoman of the latest incarnation of the JLA.
Harmonica Player: Though not a useful skill in battle, it is a skill nonetheless that she uses to strengthen her breathing and vocal cords. This is a form of training for her Canary Cry.