In one Universe, Optimus led his Autobots against Megatron's Decepticons until the Cybertronian civil war led to the creation of the monstrous combiner Thunder Mayhem. Thunder Mayhem turned on his masters, ultimately leading to him rampaging across Cybertron. History The Decepticon Toxitron was made to resemble Optimus Prime as a blow to Autobot morale and also sported a cybermetric signature that matched Prime's. The Toxic Transformer

Optimus foiled Megatron's attack on 21st century Tokyo after informing his old foe that wherever he would pop up, the Autobots would be there to thwart his evil intentions. Henkei! Henkei! volume 1 Optimus and Bumblebee later intervened when Astrotrain attacked Shinjuku Station, using their bodies to shield nearby humans from the destruction the triple-changer brought about. They were unaware that Astrotrain's rampage was really a distraction staged to keep their attention away from Megatron's gathering of energon cubes nearby. Henkei! Henkei! volume 2 Optimus continued to do battle against Astrotrain until Rodimus showed up to provide the Autobots with additional firepower. Henkei! Henkei! volume 3
Instead of his trailer, Prime can alternately combine with Armada Jetfire, who forms a pair of legs, as "Jet Prime" (Jet Optimus on the cartoon, or "Jet Convoy" if you own the Japanese version). In addition to this, Armada Overload can form a pair of massive cannons that attach to either Prime's base mode, or mount over the shoulders of his super robot torso (with either his trailer or Jetfire as legs), forming Optimus Prime Megaweapon (or Magna Convoy).
Undeniably, the most iconic of Bumblebee’s alternate modes is his original: the small but always reliable classic yellow Volkswagen Beetle. It was evocative of his personality, always striving to go above and beyond what everyone perceived to be the limits of his size. These days, thanks to the Michael Bay live-action movie franchise, he’s known as a modern Chevrolet Camaro, which looks cool but as a strong muscle car deviates from his personality. At least it’s still yellow? Bay says he didn’t want him to be a Beetle anymore because there was already an iconic movie Beetle: Herbie the Love Bug.
This Optimus Prime is a redeco of the figure above, featuring red wheels and various Tech Spec-sque patterns on the legs & chest which can be decoded with their transparent red weapons, which is molded in a sprue similar to the ones used for the Arms Microns kits & Robots in Disguise (2015) Mini-Con figures. He can use any weapons included in this set, although his primary weapon is an axe.

Brian Colin, Peter Smyth, Mark Buffington, Josh H., Propelstalz, Mary Crocker, Wayne Moulton Jr, Mitch Gross, Jim Valko, Andrew Brown, Lucy Ravitch, Nicholas Duresky, Heather Hofshi, John Kemp, Thorsten Karge, Natasha Dzurny, Keith Ives, Benjamin Chan, Neal Bhatnagar, Justin Farr, Regan Lee, Elaine, Nate Fugal, Stephanie Tennison, Jon Rasmussen, Ryan Pulis, Owen Duffy, Colman Reilly, Anthony, Mark Richman, Alexis Ohanian, Steve, Greg “TVsEgon” Skinner, Andy Saavedra, Daniel, Willie Raymond Taylor III, Chad Ingham, Irene Christian, Clinton Richmond, Jamey Stegmaier, James Allenspach, John Howell, Leif Terry, Tiago Pereira, Nathan Heath, Grinidon, Roman, Berserker Hew, Clark Stacey, Ben Harkins, Kayvaan Ghassemieh, Travis B., Justin Myers, Magna Nordgard, Jim Griffin, Jeff, David Smith, Matthew Titelbaum, Dennis Hitzeman, Daniel Lieske, Michael Jantze, Ruddy, Tom Damico, Kelson, Michelangelo Grigni
Optimus Prime appears in the Transformers live-action film series as the leader of the Autobots and one of the main protagonists. In the first three films, he is able to transform into a conventional Peterbilt 379 cab, rather than the cab over design of his original Generation 1 body. In Transformers: Dark of the Moon, he gains a first generation-style trailer form before changing into a 2014 Western Star 5700 Concept.[29] Also straying from the G1 design, Prime's vehicle mode is now decorated with red flames painted onto a blue body à la Rodimus Prime, his Generation 1 successor. The reason for the change was due to Director Michael Bay's decree that mass displacement does not occur when they transform, requiring Optimus's vehicle form to have more mass to achieve the desired size in his robot form.
Prime is loaded with a ridiculous number of features and accessories. The robot itself is highly poseable, and both the smokestacks on Prime's shoulders and the fuel tanks on his legs can be rotated forward to act as guns, even featuring sculpted detail to this effect. As ever, he comes with a trailer that opens up into his crazy-detailed Combat Deck, featuring more action features than ever before. In trailer mode alone, it features a flip-down support stand so it can stand alone, a spring-loaded pop-out ramp instead of a fold-down one, and when the trailer is split for transformation, the traditional support legs underneath automatically swing out into place. The trailer houses most of Prime's accessories, including his ion blaster (with a moveable ammo clip to allow for multiple poses) and energon-axe, as well as his classic gas pump accessory, now with a poseable wire instead of a rubber hose. Two fold-out compartments provide storage space for six of Prime's interchangeable fists, while the other two remain attached the robot: two clenched, two open, a pointing right fist, a tilted left fist (for holding the ion blaster's ammo clip), and two fists with slots to grip the miniscule Matrix of Leadership that fits in a tiny chamber in Prime's chest. The Combat Deck's artillery robot features two flip-out handles that Prime can grip as if aiming the drone's guns, and Roller is also included, with three different 3mm ports to hold Prime's gun and gas pump. Lastly, Prime comes with a rocket pack like those used by the Autobots in such Generation 1 cartoon episodes as "Dinobot Island", and a stand shaped like the Autobot insignia that allows him to be displayed in mid-air, as if in flight. The rocket pack also has 3mm ports for Prime's weapons, and stores on the front of the trailer in vehicle mode.
Dark of the Moon Voyager Class Optimus Prime is an all-new mold. He features heatshield details in his sculpting and translucent solar panels on various parts of his body, and huge gas tanks. Optimus himself is differently proportioned, having larger feet and a smaller torso and arms. He also features some faux-kibble/parts: His actual windshield chest is being covered by a sculpted panel featuring his characteristic deformed windshield-chest, and a pair of sculpted tires on his thighs. His pair of optics is designed to have a light-piping gimmick, but it was rendered useless since it was painted in smoke gray on top of the colorless transparent plastic.
In this universe, Optimus is a veteran military commander and second in command who wields an ion blaster and a double bladed energon axe. He became the leader of the Autobots after Zeta Prime fell in battle, but is not certain he wants the responsibility. The war with the Decepticons was going badly, and it looked like there was no end in sight. He vowed to himself and to the warriors under his command that he would never surrender, never retreat, and never stop fighting until the Decepticons were defeated.
Prime would make one further surprise appearance in Dreamwave's Transformers: Armada series. With Optimus Prime having disappeared to an alternate dimension, devastated by Unicron, the Autobots attempted to find their leader. As Jetfire attempted to locate him through Spacebridge links to other dimensions, one of these clearly shows RiD Optimus Prime and Prowl.
Bumblebee may be beloved, but so is Optimus Prime and writers have seemingly killed off Optimus a million times in different continuities. So it can’t be too much of a surprise to know that Bee has met his maker on a few occasions as well. In the “Dark Cybertron” storyline of the IDW Generation 1 continuity, Decepticon Shockwave goes mad with power and wants to destroy all Autobots and Decepticons. In the process, Shockwave kills Bumblebee and sets off a chain of events that leads to retribution against Shockwave.
As the two Titans battled, Optimus found Megatron watching the fight and demanded he assist them, but Megatron refused. When Trypticon swallowed the Enigma of Combination and took control of the Combiners, Optimus attempted to attack them as a distraction, but he was caught and the Combiners attempted to pull him apart. Optimus managed to break free of his captors and was further saved by the timely arrival of Megatron. Against Optimus's wishes, Perceptor returned and tricked Trypticon into swallowing the Matrix. Consumed However, this ultimately proved successful, and Trypticon released all that he had swallowed during the conflict before falling inert once again. The relief was short-lived, though, as Megatronus suddenly appeared before them, proving Optimus's fears. Optimus and Maximus attempted to surprise attack Megatronus, but he brushed off their blows and fired a beam through Optimus's chest, killing the Autobot once more. All Things Must Pass
In robot mode, like Combat Hero Prime, the bottom of the truck became his familiar windowed chest based upon the original Optimus Prime toy. His main gimmick was light up LED headlights, and a lightpipe in the bottom of his right fist, illuminated by an LED in his right forearm, that would illuminate his clear sword or his double-barreled rifle if they were used in that hand. All three LEDs were activated simultaneously by pressing the sunroof-like depression on the roof of the truck. 
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