Ralph sitting next to him has a far more appropriate expression; Gauss has a smile so carefree that I have to imagine there are more than Pringles to it.
He was described in the casting notice as a thirty-something hippie type of man.
Now, I’m not one to knock a man who loves his Pringles, even if they are the Arrow-verse brand name version of Pringles, but Edwin Gauss does not have the look of a man who understands the seriousness of his situation while hiding in the bowels of a lab to try and avoid a murderous supervillain.