Darrk, apparently the leader of the League of Assassins.
It is eventually revealed that the League is just one part of Ra's al Ghul's organization, The Demon, and that Darrk apparently turned against Ra's after failing in a mission (the usual punishment for this being death).
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She is listed on Free Ones since 2015 and is currently ranked 1760th place.
Batman then goes with Ra's to search for Dick and Talia; it is revealed that the kidnapping was a setup designed by Ra's as a final test of whether or not Batman is suitable as an heir.
Over the years however Talia has proven an important 'ally' in her way; most prominently, she encourages Batman to return to Gotham City when it is declared a "No Man's Land" following an earthquake, and he has lost his fighting spirit and didn't believe he could save Gotham.
I like when things start sensual, get assertive and then finish strong.
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