Robin is a playable character and a protagonist in the Injustice series.
Raised from birth by the League of Assassins, Damian Wayne has always struggled with Batman’s non-lethal code of honor. Now in direct opposition to his father, Damian seeks a new mentor in Superman—whom he considers to be more of a father than Batman ever was.
Outside of a brief flashback at the beginning of Injustice 2, Damian is never seen in the guise of Robin in any of the games' stories. In both games, he takes the mantle of Nightwing in the story modes, after having accidentally killed Dick Grayson, as seen in the comic Injustice: Gods Among Us #6. It was revealed in a Year Three comic prequel of Injustice: Gods Among Us that Dick’ spirit (now as a second Deadman) was the one who gave Damian his old Nightwing title as a present for his birthday.