42
guess who
(kbin.melroy.org)
Be sure to follow the rule before you head out.
Rule: You must post before you leave.
Oppenheimer? Not sure, but he definitely looks familiar.
Edit: He could plausibly be Benjamin Netanyahu if you assume the original picture was in color.
Looks almost like a mix of Oppenheimer and Feinman
The answer is Massimo Vignelli