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James Gordon refuses to have police guarding his house like other police commissioners because the symbol of an open administration is important to him.
Batgirl (Cassandra Cain) and Batgirl (Barbara Gordon) once faced each other in combat however the girl under the mask turned out to be Harley Quinn instead of Barbara Gordon.
In Young Justice #20 a cut-out silhouette of Cassandra appears however it was deliberatly left blank. In order to complete the picture the reader had to purchase Young Justice #21 where the completed image is featured.