In "Sick Mind", Optimus is infected with the life-threatening Cybonic plague, prompting Arcee and Bumblebee to infiltrate the Nemesis to find a cure for the virus Megatron himself created. As Optimus grows weaker, he learns of Megatron's survival of the space bridge explosion. It was Bumblebee entering Megatron's mind via cortical psychic patch and retrieving the cure that saved Optimus. In the next episode, "Out of His Head", Optimus is, surprisingly, saved by the revived Megatron when he intercepted Starscream's attempted nosedive to kill him.
For the 1987 and 1988 lines, Hasbro introduced even more radical ideas through new sub-groups. The Headmasters and Targetmasters came with partners who transformed into the figure's head or weapon, respectively. Powermasters, including the new version of fan favorite Optimus Prime, came with partners that transformed into engines. Each line would see various permutations over the two-year span, including smaller Headmasters, Double Targetmasters, and a Powermaster with two engines.

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.
A limited edition of the Optimus Prime toy sold as a mail-away exclusive by PepsiCo was made available in North America in 1985. This version of the figure came with a small fold-out leaflet glued to the top-right of the packaging, which contained two Pepsi logo stickers for the buyer to attach to Prime, mid-way through the traditional silver-and-blue stripe on his trailer. Canada also got a version of this promotional figure, but with much larger stickers that were the full length and height of the trailer. This promotion would go on to serve as the inspiration for the Japanese character of Pepsi Convoy, who would in turn be released by Hasbro as a new "Pepsi Optimus Prime" in 2007.
Within G.I. Joe's headquarters, Optimus found Doctor Venom controlling a robotic suit made out of the remains of both Bumblebee and Soundwave. The battle between him and the Joes spilled out into the open and into another battle, where Decepticobra was attacking the United Nations. As more factions joined the brawl, Optimus yanked Bumblebee's components free from Soundwave's body and took to the skies, back to Cybertron. Expelled from the Garden There, he was able to reunite Bumblebee's body with his head. Headmasters
An absolutely incredible 28 seasons in, The Simpsons writers and producers have had to be unbelievably creative in coming up with a new couch gag for more than 600 episodes. They’ve had a doppleganger Simpsons family walk in on the family, the whole town has absurdly squeezed into their living room, and we’ve toured the inner workings of Homer’s body.
The SS-03 version of Takara's Deluxe-class Optimus figure, based on the Anniversary release, was released in Hasbro markets in a two pack with the smaller Japanese Megatron figure. There are some tiny but notable differences between this and the Anniversary figure; the Hasbro version uses a more neutral dark-gray for the main body as opposed to the Takara version's blue-tinted dark-gray, plain dark-blue plastic rather than dark-blue-with-sparkles, and plain yellow paint for the cab's lights rather than sparkly-yellow/gold.

In search of new energy sources, Optimus led a team to central South America. When they spotted Mount Sheelah, their two human friends John and Tim Gordon explained volcanoes, and, believing it to be of possible use, the Autobots went to examine it. During a battle with the Decepticons over the volcano, Optimus was convinced by the two humans to retreat, ultimately saving them when Mount Sheelah erupted. Terror of Mount Sheelah After discovering that the Decepticons were kidnapping humans, Optimus sent Bumblebee to scout the Decepticon base. When Bumblebee returned with the Decepticons' global crystal, Optimus was able to use it to blackmail the Decepticons into letting the humans go. Bumblebee to the Rescue


↑ The African American entrepreneur: then and now By W. Sherman Rogers page 321. Books.google.com. http://books.google.com/books?id=mbTUorcuXkoC&pg=PA321&dq=%22generation+2%22+transformers&hl=en&ei=woyoTPq8KI7hnQeIwOWjDA&sa=X&oi=book_result&ct=result&resnum=5&ved=0CD8Q6AEwBA#v=onepage&q=%22generation%202%22%20transformers&f=false. Retrieved 2011-04-04.
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.
During the promotion of the Transformers films, Optimus Prime appeared in several commercials. Optimus Prime, along with other Transformers, were featured in several commercials for General Motors. Scenes with Optimus Prime were used in several General Motors commercials.[48] A commercial for the Discovery Channel featured Optimus Prime singing part of a promotional song.[49]
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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