How come there was concept art for ROTF Optimus? There was no change to Optimus from the first movie to the second. For example, there was no concept art for Starscream from ROTF to DOTM, because he didn't change at all. Optimus has concept art for DOTM because he has those nice, big, wide, thick abs There is also concept art for Ironhide, Ratchet and some others, but why?? None of these characters changed from the first movie to the second, so why did the artists have to do concept for him?