her role as Batgirl. When DC Comics continuity skipped forward one year after the events of the limited series Infinite Crisis, Cassandra Cain is revived as the leader of the League of Assassins, having abandoned her previous characterization as an altruist. The character's progression from hero to villain angered some of her fans and was accompanied by heavy criticism. Cain reprised her role as Batgirl in the "Titans East" (2007) storyline of Teen Titans, where it was discovered that she had been influenced by a mind-altering drug administered by supervillain Deathstroke the Terminator. Following the conclusion of the storyline, DC Comics has restored Cain's original characterization as a superhero and the character has been given a supporting role in the comic book series Batman and the Outsiders. Following the events of Batman's disappearance, Cassandra, acting under her mentor's orders in the event of his death, handed over the Batgirl mantle to Stephanie Brown, the former Spoiler and Robin. After declining an offer from Tim Drake to reclaim the Batgirl mantle from Stephanie, Cassandra rejoined the Batman Family under the new identity of the Blackbat. She currently acts as the Hong Kong representative of Batman Inc. Stephanie Brown, formerly the Spoiler and briefly the fourth Robin, takes up the mantle of Batgirl after Cassandra Cain gives Brown her costume under Batman's orders. Eventually, Barbara Gordon approves of Brown as her newest successor — and she gives Brown her own Batgirl costume and becomes her mentor for a period. Brown is the fourth in-continuity Batgirl and the second Batgirl to star in her own ongoing Batgirl comic book series. The New 52: Batgirl, Birds of Prey, and other appearances (2011–2016) In September 2011, following the company-wide relaunch, Barbara Gordon stars in a new Batgirl series—one of The New 52 titles featuring the company's most iconic characters. The conclusion of the limited series Flashpoint (2011) establishes a new continuity within the DC Universe, with all characters regressing to an earlier age and stage in their careers, while remaining in a modern timeline. DC Senior VP of Sales, Bob Wayne, explained that with each of their titles reverting to issue #1, "our creative teams have the ability to take a more modern approach—not only with each character, but with how the characters interact with one another and the universe as a whole, and focus on the earlier part of the careers of each of