What Happened To Everyone Who Joined The Birds Of Prey?
15. Barbara Gordon
Contrary to what the movie tells you, Harley Quinn did not start the Birds of Prey. That honor goes solely to Barbara Gordon, aka Batgirl. But since she won't be an official part of the DC universe until Warner Bros. stops delaying her movie, they had to adjust.
However, referring to her as Batgirl in connection to the BoP seems a little disingenuous since that isn't what she went by when she formed the team. No, back then, she was known as Oracle. See, Barbara lost the use of her legs when Alan Moore's The Killing Joke was made canon to the DC universe (because screwing over Alan Moore is the comic industry's favorite pastime), and so she became a hyper intelligent info broker named Oracle.
The Birds of Prey were her way of getting things done when other hero teams she worked with were unavailable. She led them as their woman behind the scenes up until the New 52 gave her her legs back and erased the entire team history. While the Birds are back in business, Oracle is now the moniker of a man named Gus Yale.