[ Look, Mark is probably not the best sight right now, covered in blood (not his!) and with a black eye, but at least the blood situation is a little less dire as he's been working to rub it off over time. Still, while he's been kind of quiet and pensive, when the kid approaches him his expression softens. ]

Who's Dr. Brenner? [ A beat. ] I don't know what this is. If it's an experiment it doesn't make any sense...

[ He perks up as if something's just struck him, though, and Mark offers Henry a smile. ]

Uh, my name's Mark, though. What's yours?