Shado

Shado's father, a man named Tomonaga, was Yakuza and knew where a Yakuza fortune was hidden. Former OSS agents attempted to discover that fortune after the war, and killed his wife to make him talk; Tomonaga executed seppuku thereafter. The Yakuza took his orphaned child to be raised as their instrument of vengeance, and gave her to a master kyudoka, Yoshitomo, so he would raise her. They had the child tattooed with a dragon to mark her allegiances and giri.

Yoshitomo himself owned obedience to the Yakuza due to ancestral giri, and taught her in the way of Bushido and kyudo, until she became a master of both, becoming shado. She then was ordered to kill all the men responsible for the death of her parents, and left Japan for several years. Her path crossed Green Arrow's twice, on two of her targets. Green Arrow first opposed her, but collaborated with her on killing one of her targets. Later, Dinah "Black Canary" Lance, then Green Arrow's girlfriend, was captured and tortured by Shado's last target. Admitting his vengeance was more important than hers, she let him kill the man.

The oyabun commanded that she cut off her own bow finger to atone for not killing the man herself, but Yoshitomo stopped that foolishness by threatening to shoot the oyabun, allowing Shado to flee. The fool gunned Yoshitomo down in anger, and Shado took his life. Green Arrow was then blackmailed by Gregory Osborne (who claimed that Shado had a treasure map) into tracking her down. No sooner did he find her, however, than she shot him in the chest with an arrow. (Later she would claim to have mistaken him for an attacker.) Shado helped nurse Oliver back to health from his injury. It was later revealed that during this time, while he was still delirious from pain and medications, Shado raped him and conceived a son.

Thus, war has been declared between Shado and a large part of Japan's underworld. They will either kill her, or she will destroy them; there is no other way.