In the video game in Justice, God's Among Us, in which Superman pretty much takes over the world, and it's up to Batman to bring him down, we learn that during this 5-year-long fight between the Kryptonian and the Dark Knight, that Dick Grayson was killed by Damien Wayne, though we don't learn how it happened. First of all, let me explain who Dick Grayson and Damien Wayne are. Dick Grayson was a member of the Flying Grayson Circus Act for his family, but when his family refused to pay protection money to the mob, they were killed by the mob. Bruce Wayne took pity on Dick and adopted him as his own son, which led to Dick learning Bruce Wayne's Batman. And he eventually teamed up with Batman to bring his family's killers to justice and join Batman as Robin from then on. Then as he grew up and became his own man, he decided to become Nightwing instead and be an independent hero. Damien Wayne is Bruce Wayne's biological son, conceived without Bruce Wayne's knowledge after a night of passion with Talia Algul. Damien grew up initially with Talia and his grandfather, Rachel Algul, who instructed him in combat since the day he was born and were training him to be the leader of the League of Shadows and the entire world. This led to him being a great fighter but having very little morals, empathy and a general bad attitude. Basically, he's kind of a dick to everyone. Robin, report, how's crowd control? Well a hand father, as predicted they respond like contemptible sheep. Damien and Dick Grayson were, for the most part, friends, if begrudgingly friends. They would regularly train together with Dick trying to instruct Damien on how to be a better Robin because Damien believes that killing criminals is more effective than putting them in prison or in our asylum. It has nothing to do with easy. It's about doing what's right because it's right and that's the only reason you need. Seemed right to me. That's the problem. So, when Superman decided to start executing criminals to stop them from hurting anyone again, Damien was all for it. And when Superman went to Arkham asylum to take all of the inmates to a more secure and undisclosed location, Damien siding with Superman, whereas Nightwing and Batman tried to stop Superman. During an inevitable fight between the respective sides of Superman and Batman, the inmates escaped from the asylum and the superiors have to put their own fight on hold to recapture all of the inmates. During this fight, Damien is losing his temper after being grabbed by Solomon Grundy and then saved by Superman and Nightwing. Damien has a terrible temper and can't stand to look weak in front of anybody and he already feels like he's always in night with shadow. So all of this is just making him angry and angry. And as Damien is losing his temper and yelling about the inmates who are deserving to die, rather than be rehabilitated, and Nightwing is telling him to calm down at like a superhero, Damien loses his temper completely and attacks Nightwing by throwing one of his sticks at him, bearing in mind that these are used to fight criminals and are a strong steal. So when it hits Nightwing in the back of the head, it knocks him out and he falls to the floor, hitting his head hard and dying instantly. Damien is shot by Nightwing's death and says that it was an accident and that he fought Nightwing with dodge the attack because when they're in practice, Damien always throws his sticks at Nightwing's head when he loses his temper and Nightwing always dodges them. But this time, Nightwing's attention was on the fight and the superman's and not on making sure his step-brother doesn't lose his temper and attack him. Batman is devastated by the loss of his adopted son and he feels just like he did when he lost his parents as a child, like he's completely alone in the world. Batman blames Damien when he's killing Dick Grayson and he doesn't even seem to hear when Damien says it was an accident. Get to me.