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 (Terry McGinnis)
Though Terry never met Batman's former sidekick that was Robin and Nightwing in the animated series, the two did get the chance to meet in the tie-in comic. They work together to bring down Hush (who was a failed clone of Grayson), and Dick helped Terry with handling the Jokerz bombing Gotham and Undercloud. Though Dick was uninvolved in the superhero community for quite some time after losing his eye during a fight between Batman and the Joker, Terry has inspired him to return to the spotlight. When a GCPD detective outs Dick as Nightwing to the public, Terry and Max try to make the public think otherwise by having Terry interrogate the detective as a disguised, older Nightwing while Max plants alibis on the internet. Dick admits the truth to the public without jeopardizing his allies' secrets.