First two still images are the Modern Day Optimus Prime. His real name is Orian Pax, this is from my own personal continuity where all the "Prime" names are titles taken from the original Transformers which brings me to the second pair of images, the original Optimus Prime. The reason he's a Fallen repaint is because I based the idea to use the Fallen's mold from the movie. All the original Primes seen in ROTF looked like the Fallen with a few minor differences. Rather than changing the mold I thought it would be better and easier to tell them apart if they all had the same mold but were colored differently. Obviously the red and blue ones are the standard versions and the purple and black ones are from the Shattered Glass universe.