I wish I could FIND more of the toys - for some reason my area is a toy desert and it seems to be hard to find good TFs. Of the ones I've been able to find, my favorites are all CHUGs, because I end up wanting to get things that look closest to G1. (Sorry. I'm old, poor, and sentimental.) I have more luck at thrift stores than I do at mainstream stores, so I have a ragtag fleet of oddballs with missing parts/untranformables locked into robot mode, etc.
A Supreme sized version of Optimus Prime, based on the Voyager class figure design.[153] When pushed forward, the upper torso spins and transforms, with the transformation sound indicating the completion of the process. The right arm has an axe-swinging action while the left arm has a punching action. Includes show-accurate battle axe that features retractable blades and a spinning jet flame. Also features sound effects and pre-recorded dialogue ("My name is Optimus Prime!", "Let's go!" and "Bring it on!"), as voiced by David Kaye.
This figure was made available again, without any changes, in 2015, this time in new packaging resembling the then-concurrent packaging design for the Generations line, but replacing the name "Generations" with "Authentic Transformers". It was also given a new Hasbro product code number and UPC barcode, thereby technically making it a separate product. In 2017, it was re-released again, this time in a minor variant of the 2014 version's packaging (including the original product code number and barcode) that now lacked the reference to the non-existing "Reveal the Shield" gimmick.

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.
This Trailer is identical to the original BeCool Trailer other than the stickers, and now comes with the trailer/launcher accessory from Bot Shots redecoed in blue with red stripes. While the vehicle mode sticker in his chest remains, the hand-holding and sleeping ones have been replaced by pictures of the launcher: one in base mode and one in trailer mode. He also comes with a sticker sheet for decorating the Trailer Base.

Smash & Change Optimus Prime is a simple figure that transforms by "smashing" the rear end of the truck/the robot's feet into the ground. He features only elbow articulation in robot mode, and includes a sword accessory that can be held in his hand or mounted on the side of his truck mode. The handle on the rear of his truck mode is molded to emulate his Vector Shield.
In an amusing (but glaring) example of poor quality control in a Takara product, the back of the packaging features a small amount of Engrish, notably the word "kinetic" being written as "Kinetick". The bio also mentions the elemental metal as the "Cyber-Matter" living metal, which is used for the Aligned continuity family. Oddly, TakaraTomy's stock photo of the robot mode figure was later used as a cutout "battle figure" included with Telebi Magazine's Burning Megatron.
After the Great War, Optimus Prime disappeared with other legends into the mysterious location on Cybertron dubbed J'nwan, where Optimus himself became the "Authority" who spoke on behalf of the others. Sandstorm, the leader of a rebellion in a 32nd-century firmly under the heel of the tyrannical Shokaract, entered J'nwan to plead with the heroes of Cybertron's past for aid. He hoped to convince them to join the fight against the Predacon warlord. After a mind-crushing journey which left all of his companions dead or deranged, Sandstorm finally found an audience with the Authority and his brethren, but they declined to help, with the Authority stating that their time was past and the war was no longer their war. The Authority then in some way manipulated Sandstorm's trip out of J'nwan such that it was comparatively short and simple. Paradox
As the final new-design Optimus Prime toy from the original Generation 1 era, the Japanese-exclusive Star Convoy was a significant departure from previous versions. This incarnation of Prime transforms into an extended-hood cab truck of made-up model pulling an implausibly large trailer, incorporating the motorized "Microcarrier". Powered by four AA batteries, the Microcarrier drives Star Convoy either forward or backward, spinning a radar dish mounted on the rear of his trailer as he rolls along. Prime's teammate in the Battlestars, Grandus, can link up to the rear of Star Convoy's vehicle mode and be pulled along behind him; Sky Garry can then land atop Grandus, forming a giant vehicle.
This redeco of Leader-class Optimus Prime replaced most of the plastics in the cab robot with colored translucent equivalents, with chromed silver wrist-pipes, a golden chrome Matrix, and red chrome window frames. His trailer remained opaque, but was cast in much deeper red plastic, with a more metallic silver used for his cannons. He was available only in a Toys"R"Us Japanese exclusive giftset released in October 2005, with a redeco of Wing Saber, and the Coby Sen'yō Rumble.
"Convoy Last Production" was the final re-use of the Masterpiece toy mold before it was at last retired after numerous re-releases and redecos. The figure is essentially identical to the original Japanese MP-1 release, aside from a slightly brighter red, and the addition of the words "LAST SHOT" in Transformers typeface molded into the small of Convoy's back, hidden beneath its headlight-flaps in robot mode. Lacking the trailer of MP-4, the figure instead comes with a redecoed version of the electronic base included with Hasbro's "DVD Edition" of the figure from five years prior, which now features a collection of sixteen soundbytes of Convoy delivering famous lines from the Japanese version of the Generation 1 cartoon, recited by the character's original Japanese voice actor Tesshō Genda. The base was promoted as containing a hint as to the identity of the next Masterpiece toy; as it would turn out, this was a new version of Convoy himself (see below), foreshadowed by a sound clip on the base which played only intermittently, and which had Convoy announce that he would "soon be reborn".

This set's Optimusses are based on the Prime incarnation. The larger Optimus is a smaller, simpler build than the first big kit, and makes use of ball-and-socket parts for increased articulation. It also carries a spring-loaded missile launcher. The Optimus Kreon's tampographs are based directly on the Prime cartoon model, though he carries an energon axe akin to the one from the War for Cybertron games. He also has a clear-blue extra "energon" torso piece.
Part of TakaraTomy's Movie Advanced Series lineup, Revenge Optimus Prime is redeco of the 2010 Transformers Battle Blades mold, featuring darker plastic, a pair of flip-out swords (the first release of this mold) from the Hasbro release, and chromed fuel tank-guns & sun visors. His shins & wheel joints are bronze from the Hasbro release as opposed to the grey of Takara's Autobot Alliance release.
Unfortunately for both Takara and Hasbro, the Generation Two series of Transformers sold poorly, and Hasbro abandoned it after two years. There were toys planned that never saw release. Most of these were G1 combiner team recolors or recolors of recent figures. Four unreleased molds were released in the Machine Wars line, and four more resurfaced in the Robots In Disguise series.

"During the Cybertronian Civil War, Sentinel Prime was killed. Prior to his destruction, he bestowed the Matrix of Leadership to Optimus Prime, who became the new leader of the Autobots. Despite being one of the youngest Cybertronian leaders, Optimus demonstrated extraordinary courage and wisdom in the war against the Decepticons. He: treated all lives with benevolence, fought for freedom and peace, and continues to fight to protect the weak and maintain their beliefs.

In the United States, Canada, and Hasbro's Asian markets, Masterpiece Movie Series Optimus Prime was exclusively available from Toys"R"Us, whereas in Spain, he saw a wider release, being at least available via the Spanish subsidiaries of Amazon and Carrefour. It's currently unknown if he was also available in stores, or limited to online purchases. In Greece, he was officially available via at least one toy store chain, aptly named simply "Toys-Shop", but again might have been available online only.
As seen in the episode "War Dawn", 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. With this reconstruction, Orion Pax became Optimus Prime, the first of the Autobot warriors.

In the Autobot Campaign, Optimus Prime provides intelligence and missions to Bumblebee in his search for the Allspark. Eventually, the clues lead the Autobot to Sam Witwicky. After saving Sam from Barricade, Bumblebee finally completes preparations for the Autobots to arrive on Earth. Once on Earth and having informed the two teenagers of their mission, Prime and the Autobots are discovered by Sector 7. Optimus sends Jazz on a high-speed destruction distraction mission, then sends Ironhide to rescue Jazz from a double-threat posed by the government agents and various Decepticon scouts. When Bumblebee is captured, Prime transforms and chases the chopper which from which the small Autobot is tied. After a lengthy chase, Prime manages to catch the net, only to be thrown off by another Cybertronian meteor. As Bumblebee is carried away, Optimus promises he will not fail him again. Jazz informs him that the meteor is not an Autobot. Prime confronts the new threat, who turns out to be the Decepticon Triple Changer Shockwave. The two battle it out across Tranquility before Optimus finally destroys him. During the battle, Optimus overhears Starscream's transmission revealing the location of the Allspark. Optimus then returns to an intel role as he guides Bumblebee in his mission to retrieve the Allspark from Hoover Dam. Unfortunately, the Decepticons manage to free Megatron, leading to the final battle in Mission City. As the Autobots battle it out with the Decepticons to protect Sam and the Allspark, things seem to take a turn for the worse as Megatron finally arrives. Before he can claim the Allspark, Optimus attacks him. Optimus defeats Megatron and leaves him on the ground, seemingly devoid of life. However, just as Sam is giving the Allspark to Optimus, Megatron awakens, leaping at Optimus with his chain-flail out, making one last attempt at defeating his adversary. Optimus grabs the chain, pulling Megatron in closer, and, with the Allspark clutched in his fist, delivers a punch through Megatron's spark, killing him. Optimus reflects on the losses and rewards of this battle, as the Autobots have a new home, but many were killed in the battle. The story ends with Optimus and the Autobots choosing to remain in Earth, proclaiming it as their new home.
Part of the first wave of Age of Extinction: Generations Leader Class toys, this is yet another completely new "big" Optimus Prime figure. While smaller than the First Edition toy, this one features more silver and chrome paint in vehicle mode, a more poseable robot mode, and a Vector Shield accessory instead of the Sentinel Shield. Unlike the First Edition figure, Leader Class Optimus Prime's pauldrons and hip-skirts are formed from truck kibble, giving him a marginally smaller backpack. His accessories have roughly the same functionality as the First Edition toy, with his sword being hand-held and pegged onto his hands or storing underneath the truck, and his shield mounting onto his left forearm or storing on the back of the truck. Additionally, the sword sheath underneath the truck can be folded up and used in robot mode.
In an amusing (but glaring) example of poor quality control in a Takara product, the back of the packaging features a small amount of Engrish, notably the word "kinetic" being written as "Kinetick". The bio also mentions the elemental metal as the "Cyber-Matter" living metal, which is used for the Aligned continuity family. Oddly, TakaraTomy's stock photo of the robot mode figure was later used as a cutout "battle figure" included with Telebi Magazine's Burning Megatron.
Released as part of a collaboration between Transformers and Primitive Skateboarding, this figure is a black repaint of the Titans Return Powermaster Optimus Prime, with the deco somewhat resembling Nucleon Quest Super Convoy, but with some gold trims and Primitive Skateboarding markings partially designed by Primitive Skateboard founder Paul Rodriguez. He also comes with an extra ramp and skateboard accessory that resembles the one Daniel Witwicky used in The Transformers: The Movie, which Shreddicus Maximus (or any other Titan Master) can attach to. The ramp can also form Optimus Prime's gun.
There is some difference of opinion on how the super mode of Leader Class Optimus Prime is supposed to assembled. Takara toys and the television series portrayed with the wings up and his two large guns underslung, however Hasbro later sold the toy with pictures and instructions having the wings down and the guns over the shoulders. Commercials and repainted models by Hasbro went back to the way Takara assembled the super mode. In 2006 a Costco exclusive of Optimus Prime packaged with Wingsaber and a DVD (with Armada Supercon Optimus Prime printed on it!) of the episode United was sold, again with the wings-under gun-over super mode. In Japan a gold chrome edition of this toy was released as a Lucky Draw special.
Prime's personality had been copied onto a floppy disk by Ethan Zachary, the technician running the game. He employed Prime in various video game scenarios he developed. Prime's damaged mind led him to believe that he himself was a video game character and, in an attempt to bring him back to life, Goldbug, Joyride, Slapdash, and Getaway took the disk to the planet Nebulos. They built a new body for Optimus Prime and upgraded it with the ability to combine with the trailer to form a larger robot. In an effort to keep Transformers off their planet, the Nebulans had poisoned their fuel. The sensation of dying, however, convinced Prime that he was truly alive and not a game character. To save his life, the Nebulan scientist Hi-Q bonded with him, creating Powermaster Optimus Prime. A UK story set around the same time in UK #198, Prime returned to Earth and tried to rekindle his feeling for the planet. After a battle between his forces and an advance force from Cybertron ruined a small town's Christmas festivities, he realized that bringing the Transformers to Earth was far worse than anything his troops could have done and vowed to protect its inhabitants from Decepticon aggression.[6]
Available exclusively at Hasbro Toy Shop and their booth at San Diego Comic-Con 2011, this version of Ultimate Optimus Prime is presented in vehicle mode, packaged into a large, foil-embossed bubble packaging (similar to late Alternators packaging) styled after Optimus Prime's trailer, with an additional foil-embossed sleeve styled after the hood of Optimus Prime's truck. Exclusive to this release is a set of stickers one can apply to the trailer. The toy itself is otherwise identical to the regular retail release.
Optimus Prime started life as Optronix (Orion to his friends), Hardwired a data archivist at the Vaults. After taking note of a battle in which the Autobot leader Sentinel Prime had been defeated by Megatron, he was summoned to the Council of Ancients and informed that the Matrix had chosen him to be the next leader of the Autobots. He received the Matrix of Leadership shortly thereafter, gaining a powerful new body in the process. After dispatching a Decepticon assassination squad sent to, well, assassinate him, he ordered the Autobots to prepare to evacuate Cybertron, intending to leave the Decepticons to their own devices. The War Within #1
In the first nexus, when Swoop reported back to Autobot HQ that the other Dinobots were being controlled by Bombshell's cerebro-shells, Optimus had to decide whether to stop them with an immediate full-scale assault, or consult the Ark's computer. If he led an immediate attack, the cerebro-shells were jolted loose when his troops carried out his order to, "Bring them down fast and hard". If he consulted the computer, he then had to choose between its plan to have Windcharger remove the shells from a distance with his magnetic powers, or go with Mirage's idea to lure the Dinobots over Bandit's Bluff with an Optimus Prime hologram. If he chose Mirage's plan, the Dinobots charged over the cliff and into the ocean, where they were salvaged for repairs back at base. If he let Windcharger lead operations at the bluff so he could confer with Skids about some strange activity near Dolphin's Bay, it was out of his hands whether Windcharger accidentally tore the Dinobots to bits, or harmlessly removed the cerebro-shells. The latter outcome led to Grimlock telling Optimus that Bombshell said controlling them was just part of a larger plan, and the Autobot leader realized that it might tie in to Skids's report. Skids and Bumblebee could investigate in Wheeljack's new mini-sub, but should he send Sludge along with them?
Though Optimus allowed himself to be destroyed when he betrayed his own moral code while playing a video game, a copy of his mind survived on a floppy disk. Years later, he was restored as a Powermaster, binary bonded to the Nebulan, Hi-Q. Optimus Prime slowly earned the respect of Decepticon leader Scorponok, mourned the loss of his friend Ratchet, and ultimately sacrificed everything to defeat Unicron. Though Optimus died again, his mind persisted in Hi-Q, and the Last Autobot was able to restore him as an Action Master in time to bring a temporary end to the war.
That’s actually a very big part, but I’d go lower than the $10 sets. The little tiny box sets with one minifig and some small vehicle or accessory that were $1-4 when I was growing up in the 80s now seem to be anywhere from $5 to $12 on the shelves. The cheapest of those are the sets that you could buy as a casual gift with pocket change in the 80s. Related to that, I’d like to see a metric that tracked the bottom price (both sticker price and adjusted price) of sets each year.

In the first nexus, when Swoop reported back to Autobot HQ that the other Dinobots were being controlled by Bombshell's cerebro-shells, Optimus had to decide whether to stop them with an immediate full-scale assault, or consult the Ark's computer. If he led an immediate attack, the cerebro-shells were jolted loose when his troops carried out his order to, "Bring them down fast and hard". If he consulted the computer, he then had to choose between its plan to have Windcharger remove the shells from a distance with his magnetic powers, or go with Mirage's idea to lure the Dinobots over Bandit's Bluff with an Optimus Prime hologram. If he chose Mirage's plan, the Dinobots charged over the cliff and into the ocean, where they were salvaged for repairs back at base. If he let Windcharger lead operations at the bluff so he could confer with Skids about some strange activity near Dolphin's Bay, it was out of his hands whether Windcharger accidentally tore the Dinobots to bits, or harmlessly removed the cerebro-shells. The latter outcome led to Grimlock telling Optimus that Bombshell said controlling them was just part of a larger plan, and the Autobot leader realized that it might tie in to Skids's report. Skids and Bumblebee could investigate in Wheeljack's new mini-sub, but should he send Sludge along with them?
Two custom-made pieces (presented in robot and vehicle mode) by the Hasbro Transformers team as the grand prize for G4TV and Jumpcut's contest for fans to remix selected Transformers clips. Won by TFW2005.com member James Zahn, this one of a kind (well, two of a kind) piece is a almost fully vacuum-metallized Leader class Optimus Prime in red, silver and blue (based heavily upon Generation One Optimus Prime), presented with a custom display base with an embossed silver Autobot insignia and a perspex display case.
Available exclusively from Japanese clothing company A Bathing Ape in April 2012, "Convoy Reissue BAPE Ver. BLACK" (コンボイ復刻版 BAPE® Ver. BLACK) is a redeco of the original Optimus Prime toy sporting a unique new grey color scheme, along with a grey trailer decorated with a camouflage pattern. Both trailer and Prime himself feature the A Bathing Ape logo in place of an Autobot symbol, while the floor of the trailer's Combat Deck mode features new Bathing Ape-themed labels. The figure comes in a recolored version of the original Japanese packaging.

Not long after his resurrection, Optimus was alerted by Monitorus to an attack on Tau-Ursa. Optimus's impending speech was interrupted by a Decepticon attack led by Sixshot. Prime soon discovered that the attack was a diversion, while Galvatron tried out his Nullification Cannon on Cybertron's Energon supplies. Optimus rushed to the Energon plant, but, after clouting Slugslinger so hard that the Decepticon was left dangling over a precipice, Prime's morals forced him to rescue the Decepticon instead of stopping Galvatron from getting away.
The Japanese release of Powermaster Optimus Prime actually represented a new character named Ginrai, and featured several retools: the cab featured die-cast metal, shortened smokestacks, vacuum-metalized plastic and clear blue windows, while the trailer was given retractable super robot fists. This Japanese version was eventually issued by Hasbro in 2003 as part of the Commemorative Series collection (see below).
Generation 1 Optimus Prime has appeared in numerous video games since the introduction of the Transformers series. He makes a cameo in the 1999 Beast Wars Transmetals video game for Nintendo 64, where he is killed by Megatron at the end of the campaign, showing what would have happened in the Beast Wars series with a Predacon victory. Prime is also one of the playable characters in the 2003 Japan-only Transformers game for the PlayStation 2 and the 2010 Transformers: War for Cybertron. Optimus Prime is also playable in the Hasbro Net Jet Transformers fighting game Transformers Battle Universe. Three versions of Optimus Prime are playable characters, including the first generation incarnation, his incarnations from the 2007 live-action film, and the incarnation from Transformers Animated. In this game, Optimus Primal is also a playable character. He is a regular character in the Nintendo GameCube and PlayStation 2 2003 fighting game DreamMix TV World Fighters. He appeared as a boss in a simple Flash-based video game on the Hasbro web site.[17]
Powermaster Prime's animation model as used in the commercials and as a character guide for the Marvel comics is a composite of the second and third designs. The body of the model is actually a straight tracing of the concept lineart for the third version (including its different rifles and twin faux shoulder stacks), with a slightly simplified drawing of the second version's head drawn on top.
In addition to being probably the most popular Generation 2 figure, Laser Optimus Prime was, prior to 2003, a regular contender for most popular Transformers toy ever, back in the days of the annual Transformers fan awards, "The Trannies." The toy won twice, and actually lost once to his repaint, Scourge. The launch of the Armada and Alternators line, along with Masterpiece Prime, saw Laser Prime drop down that list distinctly.
On the battlefield, there are few who rival Optimus Prime's prowess. He is easily the strongest of any Autobot his size, and his ion blaster and energon-axe are deadly weapons. He would sacrifice his life to protect his fellow Autobots or those under their care and does so on a regular basis. His compassion for other sentient beings is his only real weakness, and one the Decepticons have taken advantage of time and again... though it's also the source of his strength!
The paint deco is... unfocused, to say the least. In vehicle mode, the grill, headlights, bumps (thus his feet) are painted silver, yet the red in the small Autobot insignia has been removed. There is silver paint on the fuel tanks (toy battery cover), but not on the other tool boxes and equipment in the same location. There is also silver paint on all 6 wheel rims, the air cleaners and the windscreen visor. In robot mode the silver paint is mainly located on his thighs and crotch, though in order to save on costs, the dark blue and gold paint on his thighs and knee joints have been sacrificed.
This figure was designed by Yūki Ōshima and produced by KT Figure Collection. The figure is actually a mini bust of Optimus Prime, which includes the head and the upper body without arms. The chest design comes with translucent blue windows and a grill on the midsection. There is also a button in the back. Pushing the button will open the chest and cause the Matrix to emerge, similar to the scene in The Transformers: The Movie.
In Another Light, Rodimus finally assumes total control over the Autobots upon Optimus Prime and several of his closest loyalists being jettisoned into space and left near death following the Battle of Decepticon City. However, his reign came to a swift end when the group returned, having been reformatted into the Knights of Unicron. The heroically reborn Optimus, now known as Nova Prime, engaged his usurper in battle and defeated Rodimus, sending him plummeting into Cybertron's depths. However, Rodimus then encountered the malevolent Primus, who enlisted his aid and that of other "true Autobots" in ridding his surface of those he considered vermin-namely, all Decepticons and Autobots not loyal to the same cause. This would lead to an epic battle between Primus' minions and the heroic Transformers of their universe: Galvatron's Decepticons, Nova Prime's Autobots, and a group of Maximals created from Classics Autobots.
Optimus confronted his archenemy on the battlefield, though he had to knock Starscream aside to get to him first. Due to a nearby explosion that rocked the battlefield, Optimus nearly lost both his stance and his head when Megatron took advantage of the opening. But Optimus's quick reflexes allowed him to shift to vehicle mode and back, dodging Megatron's attack and striking back in the process. As the battle raged on, both combatants found themselves evenly matched. Then Ratchet contacted Optimus with dire news; the Decepticons had managed to abduct SARA! Fate
Optimus Prime has a wide range of articulation for a relatively bulky figure. He has ratcheting joints in his shoulders, elbows, hips and knees, with swivel joints and ball joints supporting them in his biceps, lower knee joints and ankles. Again, unusually for a mainline figure, especially at the Leader pricepoint, his hands have individually articulated fingers and thumbs, but no wrists.
Hybrid Style Optimus Prime is an insanely detailed and complex transforming toy, created under the supervision of famed mecha designer Shōji Kawamori. Standing only three and three-quarter inches tall in robot mode, the figure is partially constructed from die-cast metal and features one of the most complex transformation sequences ever seen on a Transformers figure of its size. Alas, the small size of the figure also works against it, as it required several design concessions that resulted in (if we're being nice about it) an unimpressive cab mode.
The term Generation 1 is a retronym; the series was simply known as "Transformers" until the release of the Generation 2 series. However, the term has become semi-official, as both Hasbro and Takara have referred to this era as "Generation 1". New characters are still occasionally added to the line, primarily by E-hobby. (Examples: Sunstorm, Hauler, Detritus, and the like.) Large-scale production of new characters in this line ended with the onset of Generation 2. Transformers fans often are very upheld with the G1 community. This has led to controversy among fans who consider G1 to be the only "pure" form of Transformers.
The figure also comes with two gun accessories, the "Eliminator Gun" and "Assault Blaster", which combine into the "Mega Striker", a rifle that closely resembles the one used in Dark of the Moon. The separate guns also have a MechTech-style transformation, and pulling a lever transforms them into alternate crossbow-like shapes. In "battle vehicle mode", the sides of the truck are rotated up, and the guns can be attached by small pegs to holes in the modified smokestacks, or they can plugged into any of the standard connection points with their 5mm posts... except the ones on the hinge behind the cab, since those are supposed to be for his Energon battle blades.
The Joes discovered a cavern where the people of Cobra-La were growing metal-eating spores as a last defense against Unicron. Flint and Cosmos took a load of the spores into space just as Unicron appeared in Earth orbit. Prime, Hawk and Colton headed deeper into Cobra-La to rescue Firewall and kick butt. Prime was tackled and pinned by a giant bug creature, but made a dramatic recovery and tossed the bug aside. He then took the machine-hating Cobra-La leader Golobulus to task with a single punch. Flint and Cosmos released the spores, which devoured Unicron from the inside and defeated the giant Transformer before he could harm Earth.
The Optimus Prime Kreon in this set is based on the character's rusty, crusty "evasion mode" from the Age of Extinction movie. He has a ferrous-metal backpack, which is used to interact with the magnetic parts in the various sets. In this specific set's case, it's so he can be grabbed by the buildable Strafe's dino-claws, once Strafe uses said claws to open up the "laser" cage made to contain Optimus. (Yeah, we know Strafe appears way after Optimus ditched this look in the movie.)

Part of the first wave of TakaraTomy Lost Age: Movie Advanced toys, this Japanese-exclusive redeco of 2007 Transformers Protoform Optimus Prime is given a Generation 1-styled color scheme (which is also based on his appearances in IDW's Transformers: Foundation comic-book mini-series). Protoform Optimus Prime transforms into his "entry" mode. This mode somewhat resembles a cybertronic truck, with false wheels sculpted onto the sides, and Optimus Prime's trademark windows in front. His now-blue flame decoration piece fits to the back of the "vehicle", creating the illusion of a flaming comet's tail (Not sure if this was mean to represent his jetpack blast effect or his atmospheric entry heat effect, which is for no reason: entirely blue instead of hot red). The bottom of the vehicle has small wheels to roll the toy across smooth surfaces.
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