User blog comment:Disney & Nick fan/Another Across the 2nd Dimension Promo!/@comment-5151799-20110528152414/@comment-3347644-20110531183241

Oh my goodness, I was about to mention the same. The more I analyze it, though, it's simply the goozim's tooth coinciding with a white stripe.

It almost appeared that he was wearing an altered lab coat of Doofenshmirtz'. Ha.