Optimus was able to rally Autobot factions from across Cybertron to the cause and launch an all-out attack on Shockwave's fortress. He headed the assault himself, but broke rank when he saw the image of Shockwave blasting Ultra Magnus upon one of the many monitor screens planted around the Decepticon's headquarters. Optimus charged in to confront Shockwave, beating down all opposition along the way. Coming upon Shockwave's throne room, Prime was greeted by Ultra Magnus, who pointed him towards a secret passage through which Shockwave had absconded. Leaving his wounded brother to rest, Optimus barged into Shockwave's secret chambers, only to be overpowered and have the Matrix ripped from his chest. With it, Shockwave was finally able to activate Vector Sigma. Countdown to Extinction Stalling, Prime listened as Shockwave recounted the history of Cybertron, and eventually Ultra Magnus arrived, having recovered, to attack and defeat Shockwave. Prime and Grimlock helped him escape from the fortress as it crumbled to the ground. With Shockwave's defeat, the Autobots would now be able to start rebuilding Cybertron towards true peace... but Optimus remained troubled by Shockwave's motives; he recognized that Shockwave would not be urged to action by mere fancy. Optimus pondered what greater threat awaited Cybertron for Shockwave to so thoroughly plan for its arrival. Revelation The injuries Prime took in this conflict necessitated a prolonged restoration period in stasis. Both he and Ultra Magnus were tended to by Perceptor and Hoist as they recuperated. Generation 1 #0 Though Magnus recovered in due course, Optimus's systems had received a more severe shock due to the Matrix being forcefully removed from his frame. Thus, he needed additional time spent in recovery before he could reboot. Black Sunshine

Available only at Kay-Bee toys (well, at first), Machine Wars Optimus Prime is a redeco and slight modification of the European Generation One exclusive Turbomaster leader Thunder Clash, transforming into a Cybertronic truck cab. It also lacks the mouthplate, revealing the mouth. The trailer unit unfolds to become a missile-launching assault tower. The tower's gravity-feed missile launchers were retooled to accommodate the new, longer spring-loaded missiles in lieu of the much smaller original projectiles due to projectile choke-gate safety testing.

The Transformers toy-line is typically divided into two main factions: the heroic Autobots and their opponents, the evil Decepticons (traditionally known in Japan as the Cybertrons and Destrons, respectively, although more recent releases often using the English terms). Transformers toys are sold at a number of price points, and various Transformers series utilize unique play features.
The brand was yet to get its biggest revitalization, though. In 2007, Paramount Pictures released a high-budget live-action movie. Though many long-time fans resented the changes in style and story that the movie brought forth, it performed incredibly well at the box office and launched the brand into the public eye all over the world. Now, everyone recognized the concept of alien robots disguised as cars, and everyone associated the concept with the name: Transformers.
The stickers may not be cut right, my copy has them off-center, they're probably using an 80's type bladed stamp with little QC to rush them out. The cab will not have the stripes applied, those are included on a strip of mylar/foil/whatever silver but you have to measure and cut them to fit. Every KO can be identified easily by these missing stickers in the box. Older releases also had the trailer's stickers separate but those have not been made in some time.
Naturally, Optimus Prime got the biggest of the sets in the first year of Kre-O. The set can be built into a large long-nose tractor-trailer rig with a removable "sleeper" cab that hides a computer station, and a trailer that can carry the set's two motorcycles or open up to carry larger car builds. The robot mode build includes a huge Optimus, based largely on the live-action movie Optimus, though with a head based almost directly on the Classics Voyager Optimus. He is armed with a distressingly plain brick that fires pressure-launched missiles (aka his smokestacks). Most of the leftover parts in robot mode become a "headquarters" which is mostly just a random assemblage of mismatched-color panels and a pair of barricades. Both main builds leave numerous parts unused if you go expressly by the instructions, but hey, it's a building kit, surely you can find someplace to apply most of 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.
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.
The Hasbro stock photos of the toy is slightly mistransformed: his pectoral armor is not folded correctly in robot mode. At least a very small number of units feature a faceplate-less head sculpt which was probably intended for a later retool, but so far there is no news about this pretool being released in the future. This figure was also released in Toys R Us Japan in May 1st, 2017 as a store exclusive, likewise identical to the Hasbro release.
This sculpt was redecoed from the Generation 2 Gobot Firecracker. The plastic colors are a "solid" version of Firecracker's color layout, substituting opaque red for transparent red plastic. It was redecoed again for the third wave of Go-Bots to become Sideswipe (who Prime really looks a lot like), and would later be used to created Robots in Disguise R.E.V..
This Collector's Edition Japanese e-HOBBY exclusive was a redeco of Targetmaster Kup, released in conjunction with the 2006 reissue of Kup and designed to represent the character Orion Pax from the Generation 1 television series episode "War Dawn". Orion transforms into a Cybertronic pickup truck and came with both a gun and Barrelroller, a redeco of Recoil. He has full shoulder rotation, though the way his elbows are set up means he cannot make full use of their joints. His legs feature no articulation whatsoever.

This gold vacuum metallized (save for his black joints, which they were made out of unpaintable plastic) Protoform Optimus Prime figure was featured as a Lucky Draw giveaway (along side similarly gold vac-metal versions of Voyager class Optimus Prime and Protoform Starscream) in the December 2007 issue of TV Magazine. Released in 2008, only 5 pieces were made, making it one of the rarest Lucky Draw figures; the images at right represent the only known photographs of it.

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