It seems George Lucas did a bit more than just visit the set of "Rogue One: A Star Wars Story." He also was a creative consultant for Concept Artist Glyn Dillon. Dillon was in charge of the concept art for "Rogue One's" Stormtrooper tank commander among other things. At Lucas's request, Dillon incorporated a unique helmet design. You can see the actual concept art above. After the jump, you can see the tank commander as seen in the film.