Damian Wayne is a fictional character in the DC Comics universe. He is the illegitimate son of Batman and Talia al Ghul, and thus the maternal grandson of Batman villain Ra's al Ghul. The character originally appeared as an unnamed infant in the 1987 story Batman: Son of the Demon, which was at that time not considered canon. Following this, various alternate universe stories dealt with the character's life, giving him various names. In 2006, the character was reinterpreted as Damian Wayne by Grant Morrison, and reintroduced into the main continuity in Batman #655, the first issue of the "Batman and Son" story arc. Having grown up in a laboratory, Damian Wayne 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. He 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. However, the Dark Knight does care for his lost progeny.