5. R2-D2 - Star Wars: A New Hope
Indeed, R2-D2 is a character but he (or she) is still a droid, neither male nor female or any other sort of alien species. Essentially, the little robot is nothing more than a moving prop. But that still doesn't make R2 one of cinema's greatest legacies. George Lucas himself noted R2 as the MacGuffin for the original Star Wars. The Empire is destroying planets just to get their hands on the rebel plans that R2 holds and Luke & company will go above and beyond to make sure he is delivered safely. Be it that he is an integral part of the plot in the follow-up films or not, R2-D2 has become one of the most recognizable items inside and out of movies. With his large blue and white can-like appearance, and his celebrated speech made up of "beeps" and "boops", R2-D2 takes a comfortable spot on this list.