Scorpius has seen pictures of Regulus Black. Hell, he's read every scrap of historical records he could find on him, because if there's one topic Scorpius would be interested in, it's Slytherins who didn't receive their due for services rendered during the two wizarding wars. Regulus is a mostly forgotten figure, but he was vital to the fall of the Dark Lord, even in death, and so Scorpius made a point of learning everything he could about him.

The fact that he was also an extended family member was just icing on the cake, and got him access to some documents and pictures he otherwise wouldn't get to see. Which is all to say, he recognizes him. It's a bit old-hat at this point to run into dead people, though, so other than the briefest moment of being startled, he's acting completely normal and casual and fine. Well, he's no more worried-looking than he was before they entered the room, at any rate. "Do you do Time Deviant registration here?" It doesn't look exactly like where Scorpius had done it. "We got a bit turned around..."