Cassandra Cain is the fourth Batgirl. Born with the assassins David Cain and Lady 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 Batgirl. Cassandra would eventually turn her Batgirl costume over to Stephanie Brown, and become a member of Batman Incorporated as Black Bat.