After Batman died, Dick Grayson donned his cowl and took over his identity. In DC Universe Online
he'll still be good ol' Nightwing, which is great news for comic book fans who would rather pretend that this story line just never happened. I am one of those fans.
So I'm even more stoked for SOE's upcoming MMO, and look forward to playing it whenever they pick a release date. You'll be able to fight alongside or against Nightwing, but with those wicked Escrima sticks I trust you'll make the right choice.