Nightwing had been downstairs in the cafeteria getting their little prisoner his lunch since they couldn't exactly let him starve to death. It would have felt strange walking around the building fetching meals in costume, though, so he'd gone down as Dick Grayson, grabbing himself something to eat while he was down there and then stopped back in his room to change.
The sound of another unfamiliar voice in the makeshift cell was what first alerted him to the fact that something was wrong and Nightwing wasted no time unlocking the door and letting himself in, seeing two very unfamiliar people there. Sora and the Heartless. But . . . wait, hadn't the Heartless been given a new body? Supposedly X was capable of shapeshifting, though. Either way, Dick closed the door behind him and set the tray of food down, looking at both of the them with an expression almost definitely learned from Batman. "What the hell is going on here?"