Nightwing
Nightwing is a fictional superhero appearing in American comic books published by DC Comics. The character has appeared in various incarnations, with the Nightwing identity most prominently being adopted by Dick Grayson when he moved on from his role as Batman's vigilante partner Robin.
List of Batman: The Brave and the Bold characters
In a book written by Alfred Pennyworth as seen in "The Knights of Tomorrow," Nightwing has become Batman after Bruce Wayne retired. Nightwing later appears in "The All-New Batman: The Brave and The Bold" issue 13.Barbara Gordon is Bette Kane's successor as Batgirl. Batgirl was mentioned in a conversation between Jaime Reyes and his friend Paco in the episode "Night of the Huntress." She appears in "The Last Patrol" where she helps Batman defeat Killer Moth in a flashback. Batgirl plays a major role in "The Criss Cross Conspiracy" where she helps Nightwing and Batman (who is in Batwoman's body) rescue Batwoman (in Batman's body) from the Riddler. She also makes a cameo appearance in "The All-New Batman: The Brave and The Bold" issue 13. When the Robins saves Batman, Madame Xanadu says that if the Robins failed, she would have sent the Batgirls to save Batman. Barbara appears alongside Cassandra Cain, Stephanie Brown, and Bette Kane, the Batgirls. It is speculated that she became the hacker Oracle, but recently returned to be Batgirl (Oracle was not portrayed in the TV show and The All-New Batman: The Brave and The Bold comics)