Nightwing
Nightwing is a fictional superhero appearing in American comic books published by DC Comics. The character has appeared in various incarnations, with the Nightwing identity most prominently being adopted by Dick Grayson when he moved on from his role as Batman's vigilante partner Robin.
Batman: Night of the Owls
While Nightwing fights the demon Zohna in New Orleans, his girlfriend Raya meets up with Saiko. Saiko reveals that he knows about the Black Book of Names and sleeps with Raya, revealing himself to be none other than Nightwing's childhood friend, Raymond. Nightwing grows confused as to why Saiko has not attacked him and investigates the case, using his skills learned from his tenure as Batman. With Bruce still missing, Nightwing learns of a Flying Grayson's Memorial Show planned in Gotham. Saiko reveals to Raya that he plans on killing Grayson at the memorial show. At the show, Nightwing confronts Saiko who, to Grayson's shock, reveals himself as Raymond. Because before Bruce took him in, Grayson was supposed to be the next Talon, in turn, Raymond blames him for the torture that he received. During the fight, Saiko triggers explosions around the circus.