User blog comment:Rassilon of Old/Young Justice spoilers at Comic-Con 2012/@comment-76.174.103.88-20120903080903/@comment-99.55.67.73-20120903200359

I'm not sure about the comics, but he is deifinitely Dick Grayson in the cartoons. He turned into Nightwing in that episode where Starfire goes into the future, remember? Tim Drake never becomes Nightwing, just Red Robin.