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|“||Superman's been more of a father to me than you ever were.||„|
|~ Damian Wayne|
|“||You stopped being my son when you killed Dick Grayson. He was my son.||„|
|~ Batman to Damian.|
|“||I'm your only son, Old Man.||„|
|~ Damian to Batman|
|“||Dick was my son too.||„|
|~ Batman to Damian|
He later returned in Injustice 2, with Robin as his default outfit.
He is voiced by Neal McDonough in the first game, then by Scott Porter in the second game.
Damian first appears crashing into Joker's Asylum, quickly knocking out several Joker Clan goons. After the Clown Prince of Crime himself managed to defeat Hawkgirl, Damian tried to charge at the Joker but is repelled by the clown's razor sharp cards. Before the two fought, Joker notes him siding with Superman over Batman (, he didn't know that he was talking to Damian Wayne, and not Dick Grayson). To which Damian replied by calling his own father a criminal, just like the Joker. The two battle, but Damian ends up getting defeated by Joker. Before the Joker can get a chance to finish him off, the Insurgents arrive and Hawkgirl grabs Damian and retreats.
At Stryker's Island, when Batman's Insurgency is starting an attack to save the prime universe's Batman, Nightwing encounters Green Arrow. Green Arrow, thinking that this version of Nightwing is Dick Grayson, tried to reason with him until the parallel universe's Batman revealed that Nightwing is Damian Wayne, who killed Dick Grayson and took his identity. Batman states that he stopped being his son after that and that Dick Grayson was his true son. After defeating Nightwing, Batman said that he's "dead to him." After Superman's defeat at the hands of the prime universe's Superman, Nightwing, along with other Regime allies got arrested.
In his Classic Battle ending, after defeating Superman, Nightwing realizes that he is capable of anything and challenges anyone who gets in his path. Seeing his ability to inspire fear in others, Nightwing is chosen by a yellow power ring and is recruited into the Sinestro Corps.
Damian, as Robin is seen in the prequel chapter several years ago during the first game's prequel events. It will explain how he defects his father and joins Superman's Regime, and somehow retconning his killing on Alfred's murderer, Zsasz, with Alfred's dead remained unknown. In the prequel comic when Damian is freed and forced to return to Ra'as Al-Ghul's side instead of having his Regime friends freed along with it, Damian has a chance to resurrect Alfred to Lazarus Pit, while ambushing Batman's Insurgency, and ruining a wedding between Black Canary and alternate Green Arrow, including on kidnapping two of Black Vulcan's daughters and Connor Lance-Quinn (Black Canary and the original universe's late-Green Arrow's son) as hostages. As Harley Quinn in charge taking care of Connor, Vulcan's kid safely, Damian nurses a weakened revived Alfred. Despite Ra's threatening on Batman's Insurgency to surrender, Damian warns his grandfather that his father Batman will never give up no matter, and predicting the income of Insurgency's Justice League Task Force to Ra's hideout in South America, which became true as Batman implanted a nano tracking device on Connor, in case he is kidnapped like he is now. As Alfred began to recover, albeit still unable to talk for a moment in his recovery, Damian is having a heart to heart discussion with Animal Man on why someone who owned Batman a debt like Animal Man himself, even Vixen joins Ra's' faction.
In Batman's prequel chapter part when Damian was Robin, he is first seen aiding his father to find Superman in Cellblock C of Arkham Asylum, but later defects him as Robin kills Zsasz and accuse his father for letting Jason Todd, and Superman's family Lois and their unborn son died by someone dangerous as Joker's hand, and Damian claim that he himself was raised League of Assassins as an assassin, different than his father's ideal of without killing on fighting crimes.
In a recent chapter's present time in many days after Ra'as Al-Ghul's own Regime ends, Damian is shown to have been turning himself in as a mean to wait for a chance for the other escaped Regime members to rescue him and their imprisoned friends, while also have had cut his hair back to short. He was later freed by the remaining escaped Regime members Black Adam and Wonder Woman (assisted by a newly recruit Supergirl), along with Cyborg during Brainiac and Society's reign, until Batman stops the conflict and made an uneasy alliance with the Regime to stop Brainiac and the Society, thus freeing Superman. He is last seen beaten by Supergirl when she is about leave in broken heart after learning how the Regime heroes have fallen 5 years ago, but must deal with Brainiac before the arguing start again first.
After his father Batman sacrifices himself to protect Damian allowing him to deliver the final blow to Brainiac. Now with an appreciation of what their family's symbol truly means, Damian decides to carry on his father's legacy as the new Batman.
- Although represented in the game as Nightwing, Damian is called by most of the players by his own name. In the sequel he appears as Robin in default appearance.
- In Injustice 2 when changing his gears into those of Nightwing, Damian's lifebar name is still Robin. Except in Story Mode.
- According to Kuai Liang, the current Sub-Zero and Grandmaster of Lin Kuei from Mortal Kombat, Damian repeats a similar mistakes as another Mortal Kombat character Scorpion was, such as succumbing by their passions completely.