This version of Optimus is a redeco of the original Legion Class Optimus Prime toy, featuring additional paint details. He features an Autobot insignia on his faux chest. His head was not entirely clipped down in his stock photos. The stock photos shows him having darker plastics & silver paint as opposed to the final product. This seems to have been a trick of the lighting, as the released toy remained its standard plastic colors & silver paint apps.
In true Prime style, forward portion of the vehicle mode detaches to become Prime himself, while the rear "trailer" transforms into a gun emplacement. In robot mode, the barrel of the truck's left cannon detaches to become a hand-held rifle for Prime, and the figure features an opening chest compartment concealing a removable Matrix of Leadership accessory. Prime's gigantic hands mean that he can't hold it especially neatly, but he can certainly grip hold of it. Atypical of both most Unicron Trilogy figures and indeed, Optimus Primes in general, Prime's hands are not designed to accommodate weapons with 5mm posts, instead featuring a small peg-hole in his palm that allows him to tightly grip objects designed to fit there, like his own rifle, Leobreaker's whip, Cybertron Wing Saber's swords, and Cybertron Metroplex's axe. However Cybertron Wing Saber's sword hilts will also act as adaptors allowing Prime to hold and use 5mm weapons.
First Edition Optimus Prime is, as his title suggests, the first toy available to the public from the Age of Extinction toy line. Prime is an all-new Leader Class-sized figure, featuring his new Western Star "5700 OP" concept truck vehicle mode and his updated robot mode from the film (well, mostly based on his initial design rather than the final design in the movie). His transformation is much simpler than his counterparts from the previous three movie lines, being billed as transforming in "15 easy steps." His torso, shoulders, upper legs, and the vehicle mode grill are all completely chrome with the exception of minor blue and red details painted on his chest. However, this comes at the expense of his smokestacks and wheels being bare gray plastic, whereas they are chromed in the film. His simplified transformation also comes at the expense of having a very bulky "backpack" of kibble composed of the rear of the truck cab and the fuel tanks, limiting his shoulder and hip articulation. However, his Truck kibble can be detached from the main figure to form the majority of his vehicle mode on its own.
In 2003, Transformers: Armada launched a pivotal new era in the toy line. After several lines of toys produced by one company or the other, Hasbro and Takara united to produce what was purported to be a single, identical line of Transformers for release worldwide. In tandem with this new endeavor, Armada signaled a new continuity in its accompanying animated series and a new focus in both the show and the toys on Mini-Cons, a new faction of Transformers. The Mini-Cons were much smaller robots (not much larger than humans) who were neutral in the Autobot/Decepticon fight, but due to their incredible power and abilities, were sought by both factions.
Originally, Optimus Prime was created as the leader of the Autobots, though it is unknown how he was created or his origins. In a possible future, Megatron was threatened by the existence of the Aerialbots and had Shockwave build a time machine to send them back in time to get rid of them. However, he only ended up changing history for the better. In the revised timeline, Optimus Prime began his life as a robot named Orion Pax, a mostly defenseless dock worker during the Golden Age of Cybertron nine million years ago, with a girlfriend named Ariel and a best friend named Dion. During this time, a new breed of robot with new flight capabilities appeared on the planet that Orion idolized. When Megatron, the leader of the new group of robots, approached him with inquiries about using one of the dock warehouses, Orion was swayed by Megatron. Both Orion and Ariel were severely wounded when Megatron and his forces attacked in order to claim the energy stored there. Searching for someone to help them, the time-displaced Aerialbots took Orion and Ariel to the ancient Autobot, Alpha Trion, who used them as the first subjects for the new reconstruction process he had developed involving rebuilding the frail Autobot frames into more battle-hardy configurations.