Megatron came upon Optimus and challenged his old foe to a duel. Optimus managed to gain the upper hand, but hesitated to deliver the killing blow when he discovered that Megatron had married the Matrix to his spark, corrupting it. Several Decepticons then swarmed Optimus, allowing Megatron to blast a hole through his chest. Dead and defeated, Optimus plummeted down into the bowels of Cybertron. Pax Megatronus Rodimus and Duke travelled far beneath Cybertron, where they discovered Ultra Magnus- the Autobot god of death -carrying Optimus's body away. Earth: R.I.P.
The first Cybertron Optimus Prime toy transforms into a heavily-armed fire truck of made up origin, topped with two large cannons. The left fires a spring-loaded translucent blue missile, while the right features electronic sound effects and a flashing red LED. The cannons and the sides of the truck fold down to create an unlikely flight mode for the vehicle.
In the episode "Along Came a Spider", Optimus discoveres that Elita did survive the ordeal with the giant spiders and was transformed into the technorganic Decepticon Blackarachnia. He offeres to try and help her, but is turned down violently as Blackarachnia has still not forgiven him. However, when she nearly dies trying to use the Allspark key to purge her organic half, Optimus saves her and repeats his offer to help her. She stings him instead, vowing that she will never trust him.
A redeco/new-head retool of the Rescue Bots Hoist the Tow-bot figure, Optimus Prime transforms from robot into a tow truck. Pulling the tow truck's hook up converts him back into a robot. The panel on the top of the cab has been remolded with additional truck detail in place of the Rescue Bots logo on Hoist, while the Rescue Bots insignia on his torso is unpainted.
The first release in the Asian-exclusive Asia Premium Series toyline is an extensive redeco of the previously-Japanese exclusive Striker Optimus. He features a comprehensive paint scheme directly based on Jetpower Optimus Prime, with blue pinstriped flames, lots of silver paint, and vacuum metallized parts, although his hands are left unpainted in favor of painting his mirrors silver. Along with his standard accessories, he also comes with 2 battle blades, which were previously exclusive to Toys"R"Us Japan. He features the "We must stop the Decepticons!" voice chip, but batteries are not included. Rather helpfully, his instructions are supplemented with text instructions written in English for all the steps, as well as the additional photographs used for the previous Striker Optimus toy.
An undocumented transformation step includes flipping Optimus Prime's knees out in vehicle mode to form a back bumper with tail lights. Oddly, the toy itself and the package art show Optimus Prime with four fingers on each hand, while he has 5 fingers in the video game. The vehicle mode pictured here is minimally mis-transformed: The exhaust pipes have not been rotated to hide the indentations against the vehicle body. The instructions show the rifle being plugged in by its shorter peg, but the packaging depicts the rifle stored by its grip, which keeps the weapon higher off Prime's body, but is also more secure.
In the alternate universe of the 2003–2004 toyline and series, Transformers: Energon, Rodimus (lacking the "Prime" suffix in English, but still called Rodimus Convoy in Japan) was a great leader on Cybertron ages in the past and was viewed as a hero by many, including similar character Hot Shot. Desiring to escape the war that had consumed the planet, Rodimus departed Cybertron with a contingent of like-minded troops, most of whom settled on an alien planetoid and became the energon-mining Omnicons. Still, Rodimus continued on his journey with Prowl and Landmine, carrying the "flag of peace" from world to world.
This Kabaya candy toy of Cybertron Optimus Prime transformed into cab mode through disassembling into its component pieces and being rebuilt, hence the line's name of Blockformers. He came with his hand-held rifle, and a stick of chewing gum. Each figure in the Blockformers line came with additional pieces that could combine with Prime to either make his trailer in vehicle mode, or convert his robot form into Super Mode. Prime himself came with his missile pod/shoulder brackets, his leg armor and guns, his right cannon came with Leobreaker, his backpack and wings came with Override, his Super Mode head came with Scourge, and his left cannon came with Evac.
Transported to a parallel Universe, as the walls of reality began to crumble, foretelling the coming of Unicron to the Armada universe, Optimus Prime and Jetfire were reformatted by their Mini-Con companions using the Mini-Con Matrix into new "Powerlinx" forms. Optimus Prime and Jetfire combined to hold the chaos-bringer at bay. Unicron was eventually defeated by the united power of the Mini-Cons.

If the Autobots went along with Prowl’s strategy, the resulting heat from the explosion caused the Autobots’ circuits to overheat, rendering them unconscious. Upon reawakening, the Autobots found themselves captives of Megatron, who informed them that their fellow Autobots would soon perish, and that the humans would be conquered by the Decepticons shortly after.


The sequel series, Transformers: Generation 2, began an undisclosed period of time later. At the beginning of the series, Prime was restored to a form resembling his original body. He and the Transformers found themselves caught in the schemes of a new generation of Cybertronians, led by the icy Jhiaxus, who were colonizing and cyber-forming other worlds. Plagued by nightmarish visions of a life-destroying entity called "the Swarm", Prime looked into Cybertron's past and discovered that Jhiaxus and his kind were the result of an unintentional Transformer reproduction. Their nature and intent, he found, was distilled to the purest, most unemotional form of conquest and that the Swarm was the by-product of this process. To fight this new enemy, Prime and the Autobots entered into an alliance with the recreated Megatron's Decepticons. Though Prime was eventually consumed by the abomination and destroyed, he was able to unleash the energies of the Matrix into the Swarm, purifying it. In parting, the Swarm recreated Prime in a new form, and he and Megatron set out to lead the united Autobots and Decepticons into a new age.
There is also the release of Optimus Prime as a deluxe sized brown gorilla which is a repaint of the Beast Wars 10th anniversary Optimus Primal toy most likely trying to tie Optimus Prime in some way to the jungle planet Animatros in the Cybertron series. According to his bio, Optimus Prime was temporarily mutated into this form by the Animatros Cyber Planet Key. The colors of this toy are a homage to Transformers: Universe Optimus Primal.

An exclusive version of Titan Class Metroplex was made available at San Diego Comic-Con 2013. He comes with 12 small, non-transforming figurines of Orion Pax, Megatron, Bumblebee, Thundercracker, Trailcutter, and Hoist, all in both modes. The figurines are based on their Thrilling 30 Generations Deluxe Class toys, and similarly to Decoys, the Autobot figurines are cast in red plastic, and the Decepticons in purple.

(As an odd postscript to this tale of footwear-induced madness, although the promo pictures all showed the shoeformer as a white and navy blue sneaker that transforms into a white and aqua blue robot, the product actually released sported much darker colors for all the robot-mode parts, with a deep teal instead of aqua, and almost all the white replaced by an icky tan/cream/grey color, including the head. Basically, the figure looks like the promo picture viewed through really dark sunglasses. Although this certainly doesn't make it look any more like Prime, you might argue that it looks a little less like Magnus. Sorta. Maybe. Not really.)
There is one aspect not looked at in the price and that is the shift to model building vs. creation leading to a change in the utility of the pieces. I seem to need many more sets to get a useful variety of pieces these days as many of the sets contain a lot of pieces that are very specific to the needs of the set and are less useful when one wants to create their own designs. It would be a fascinating addition to rate each of the block types on its utility, perhaps by its prevalence in other sets, and then assess each set on its total utility score. So then the question is how many sets would you need to by to achieve different levels of utility and how has this changed over time.

An extensive redeco of the Protoform Optimus Prime mold that was exclusively available at the Japanese C3xHobby Convention in August of 2007, and later offered by e-Hobby in limited quantities. Most of the body is made out of transparent turquoise plastic in order to mimic its frozen state in the "coldness" of space, while orange paint is used on the front end of the "entry" mode, mimicking the heat effects of sudden atmospheric entry. The flame attachment is made out of clear blue plastic, with the tail end being covered in gold paint.
When Sideswipe was accused and convicted of destroying the Nova Suspension Bridge, Optimus was infuriated that one of his own Autobots could commit such a heinous act. Optimus was tasked to hunt down and deactivate Sideswipe, though the task proved to be easy as Sideswipe did not run, hide or resist. After Optimus had deactivated Sideswipe, he was approached by Prowl, who pointed out that Sideswipe's actions made little sense, as he had committed the crime in broad daylight before many witnesses. Agreeing that the Decepticons might be behind the situation, Optimus allowed Prowl to take a team of Autobots to Carob Island to clear Sideswipe's name while Optimus and Jazz stayed behind to continue working on human/Autobot relations. Prowl returned with evidence that it was indeed a Decepticon-controlled clone of Sideswipe that had committed the crime. Optimus then presumably reactivated Sideswipe when his name was cleared. Deadly Paradise
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