"Don't get used to it. We're not going to be here long."

Just because he wasn't very recognizable as Nightwing didn't mean Dick hadn't changed his appearance as much as he could. After all, they were in Gotham and people knew Dick Grayson. A lot of them had watched him grow up from afar in the society pages and the like.

Still, disguises were one of the skills that Batman had made certain they all learned, so Dick was probably the LEAST recognizable of the three now. Those who really knew what to look for could see the resemblance, but with luck, they could avoid those. This world's Dick Grayson was dead, after all. Best to avoid having people see ghosts.

Well. Even if his counterpart apparently was one.