Day 52: Damian Wayne (Robin)
He is the son of Batman and Talia al Ghul, and thus the maternal grandson of Batman villain Ra's al Ghul. Having spent his gestation in a laboratory, Damian as a pre-adolescent is left by his mother in the care of his father, who previously was not aware of his son's existence. Damian is violent and self-important, and was trained by the League of Assassins, learning to kill at a young age, which troubles the relationship with his father, who refuses to kill his opponents. However, the Dark Knight does care for his lost progeny. After the events of Batman R.I.P. and Batman: Battle for the Cowl, Damian takes up the identity of Robin at ten years of age, becoming the fifth person to use the Robin identity.