Damian Wayne is a fictional superhero appearing in American comic books published by DC Comics, commonly in association with Batman. He is the son of Batman and Talia al Ghul, and thus, the grandson of Batman villain Ra's al Ghul, the great grandson of Sensei and the nephew of Nyssa Raatko. Through his father he has two half-brothers, Matthew McGinnis and Terry McGinnis and a half sister, Helena Wayne and is also the grandson of Thomas Wayne and Martha Wayne. The character originally appeared as an unnamed infant in the 1987 story Batman: Son of the Demon, which at that time was 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 introduced into the main continuity in Batman #655, the first issue of the "Batman and Son" story arc. Damian Wayne is the fifth character to assume the role of Robin, Batman's vigilante partner.