After an elderly James Gordon stepped down as Commissioner Ellen Yindel took over the position. Unlike her predecessor, Yindel is a strong opponent of Batman. Her first act as Commissioner was to issue a warrant for Batman's arrest.
In Other Media
Batman: The Dark Knight Returns
Ellen Yindel appears in the animated film adaption of Batman: The Dark Knight Returns.
Though it is never confirmed it appears the the creation of Ellen Yin in The Batman animated series was inspired by Ellen Yindel, having a similar name and sharing certain characteristics.