The daughter of David Cain and Sandra Wu-San (Lady Shiva), Cassandra Cain was conceived and trained from birth with the intention of creating the perfect bodyguard for Ra's al Ghul. After many unsuccessful attempts to train children from birth in martial arts to make them inculcate it like a native language (the most successful being the Mad Dog), David Cain, then a member of Ra's League of Assassins, decided the right genes were necessary to create this "Who Is All". With Ra's go ahead, Cain se