Cassandra Cain

Cassandra Cain is the fourth Batairl. Born with the assassins David Cain and Ladv Shiva as her parents, she was trained to become the perfect warrior. Her father deprived her of speech so she would learn movement and physicality as her first language. Batman adopted her into the Batman Family during No Man's Land, to replace Helena Bertinelli as Batqirl. Cassandra would eventually turn her Batqir costume over to Stephanie Brown, and become a member of Batman Incorporated as Black Bat. You are her boyfriend and you dont know she is a Black Bat