In the world of the BomBom comics, Big Convoy and Magmatron were originally normal animals that were mutated into Cybertronians via exposure to Anglemois energy. #Transformers

RID15 Decepticon Flamesnort was revealed to be hiding on earth with a planet destroying bomb at Megatrons behest Stationed during the great War, he was likely stationed on earth during the events during some of, if not the whole of the Prime cartoon, waiting on Megatrons orders. #Transformers

The "Toxitron Collection" was a small line of figures based on canceled Generation 2 figures, with every figure based on a canceled deco, except for Toxitron himself, whose original figure was intended for Universe 2003. #Transformers

Despite having a full robot mode with his figure, Armada Overload in the cartoon would mostly be treated as an extension of Optimuses trailer, having scant background appearences in robot mode. #Transformers

The Kreon Microchanger combiners across the board would only include 4 members of the team in the sets, leaving any missing members released individually in the microchanger blindbag series #Transformers

The "Animorphs" toyline, made by Hasbro, was advertised with a "Transformers" banner, despite not being connected to the rest of the franchise otherwise. Vector Prime would go onto state the Animorphs universe exists outside the Transformers Multiverse. #Transformers

Later, through FunPublications, the designs of the TransTech line would be repurposed for FunPubs "Axiom Nexus" stories, a universe where the war never happened, and Cybertron is a technolgically advanced "utopia," full of Multiversal travelers. #Transformers

Transmetal Rhinox makes a cameo as an Autobot in the final episode of Armada, additionally, while a redeco of Transmetal Rhinox featured in the Armada toyline, the one in the show was colored like the original. #Transformers

Transformers: Adventure was the Takara counterpart to the RID15 toyline in america. The line was oddly full of many, many redecoes of RID15 characters, previous tfp figures, TFA figures, and even generations figures #Transformers

Kickback was slated to appear in the film Age of Extinction, reaching several concept art stages before ultimately getting scrubbed from the film. #Transformers

The Reverse Convoy figure has been re-purposed as both Brightes, the previous leader of the Primus Vanguard Blue Order, and as Blue Megatron, from the Megatron lead New Primus Vanguard. #Transformers

Seen in the Victory portion of the JPG1 toyline, Brainmasters are Transformers who bare cavities in their chests and head, to which the "brain" minifigure slots in, becoming the face. #Transformers

Another late European redeco of a Japanese exclusive figure, the Motorvators were redecoes of the combiner Road Ceaser, lacking the combiner kibble. #Transformers

In one of the original Transformers pre-production treatments, Starscreams name was "Ulchtar," later in the franchise, Micro-Continuity versions of UT Starscream would bare the name. More famously and recently, Skybound Starscreans name was once Ulchtar, #Transformers

The Rescue Force was a set of 4 figures released in the late European Transformers G1 line, all redecoes of the Japanese combiner Liokasier members #Transformers

The "Turbo Board" included with Action Master Jazz was vaguely implied to be sentient, referred to as Jazzes partner rather than weapon in the toys bio. The Trading Card game would later expand on this by giving the board an Anomalocaris beast mode. #Transformers

Takara released Ultra Magnus in his diaclone color scheme as a "movie preview" variant in 2001, later, this color scheme would be established as a new character in his own right named "Delta Magnus." #Transformers

The Tom Scioli Go-Bots comic implies that after the war between the Renegades and the Guardians end, the Go-Bots then go on to be the ones who create the Cybertronians. #Transformers

The package for Studio Series Soundwave uses a Youtube Screenshot as the scene on the back of the box, with the play button still visible. #Transformers

Mainframe Entertainment made frequent re-use of character models when possible, one example being Megatrons T-Rex alt mode repurposed as a statue in Hot-Wheels: World Race #Transformers

The Microverse toyline was a series of small figures and large playsets, Beast Wars got in on the branding by doing the Orcanoch Maximal set and Arachnid Predacon set respectively #Transformers

Released in the Operation Combination portion of the Japanese Generation 1 toyline, Guard City and Battle Gaia are redecoes of Defensor and Bruticus respectively, recontextualized as new characters entirely. #Transformers

In the original Shattered Glass continuity, Optimus Prime, Brawn and Prowl were reformatted by Unicron into the heroic Nova Prime, X-Brawn and Checkpoint, with Ratchet and Inferno being turned into Autotroopers #Transformers

Dire Wraiths are aliens who can merge with and control other organisms, consuming the initial organism in the process. This ability even works on Cybertronians, however, their mechanical biology means the merging can be botched, killing both personalities. #Transformers

Legacy: Evolution Core class Scarr was an extra addition to the dinobot roster that transformed into an Anklyosaurus Ironically, the Scarr in fiction he was based on died before ever gaining a Dino alt mode. #Transformers

Rather than suicide, Hitler in the Bayverse continuity was instead killed through a Cybertronian creature with a watch alternate mode assinating him through unknown means. #Transformers

Additionally, Brainstorms name was once Genitus, due to his intelligence, he was dubbed "Brainstorm" by his peers. #Transformers

The "Beast Wars 10th Anniversary" toyline saw the first official toy of Transmutate, being a Build-A-Figure where one of their parts was included with every figure from the first wave of the line. #Transformers

The copyright flimsy character Rom the Space Knight was planned to receive a figure in the Botshots line, but was ultimately canceled #Transformers

Mentioned a few times on this account already, "Missing Link" is a high end Takaratomy toyline of which the main draw is creating figures that have the same base design as the original Generation 1 figures, with modern articulation. #Transformers

Additionally, a majority of the United EX figures were existing characters with new names, for example, "Rollermaster" is a figure of the Marvel Comics character Straxus #Transformers

Masterpiece Nightstalker depicts Nightstalker, a character originating from the Marvel Comics, as a Steeljaw redeco, despite this, the mold was never actually used for Steeljaw. With the tease of a upcoming Masterpiece Blaster, this might finally change. #Transformers

Due to a lack of motorcycles in the line, the planned but ultimately unreleased Botshots groove would've instead turned into a tank. #Transformers

In the world of the Transformers: Victory tie in Manga, the Famicom, Japanese counterpart to the NES, apparently sold so well Nintendo never made any other console, as it's still considered the hottest videogame console well into the 21st century. #Transformers

Due to their ownership of the Trademark, Hasbro, and even Takara, occasionally make use of the name for whole toylines, usually ones targeted at younger children. #Transformers

Due to the recent September 11th terrorist attacks, episodes of RID01 were occasionally edited to temper scenes of city destructicon. Episodes 17, 21 and 22 were simply not aired in the US due to their scenes being too prominent. #Transformers

The "Megatron Megabolt" figure released in the RID2001 toyline was designed to be able to act as another head for Generation 1 Fortress Maximus #Transformers

"Five Faces of Darkness" part 4 depicts Megatron being constructed by the Constructicons, seemingly 8 of them at once. Later Japanese continuity would establish these as the original 6 Constructicons + Gravedigger and the ex-decepticon Hauler. #Transformers

The RID01 Autobot R.E.V.s Japanese name was "Eagle Killer" #Transformers

Concept art for the "Bumblebee" film would've seen Bumblebee, to some degree, participate in the Vietnam War. Bumblebee also seems to bare his TLK World War 2 body. #Transformers

During the Universe War event, a counterpart of Beast Wars Inferno was abducted, and due to his recent death in his home universe had to possess a new body, Inferno choosing to possess the corpse of a recently dead Red Alert #Transformers

A Triple Changer that would've gone from Robot, to Plane, to Horse was (possibly) planned for release in the original Transformers line, but ultimately canned. The Armada Dreamwave comics would later make this into a character named Dropshot. #Transformers

An animation error depicting Thrust as entirely black would later be retconned into being a separate character referred to as "Blast" #Transformers

While initially unconcerned with following the timeline of the previous Headmasters cartoon, Super-God Masterforce was retroactively decided to take place after it's predecessor. This coincidentally creates a timeline where the Soviet Union lasts into the 2020s. #Transformers

The smaller Spychanger Optimus would be established as her own character first, with Splendid Convoy coming later as a different character. This retcon retroactively makes the Spychanger Scourge female as well. #Transformers

While most famous for being SG Jetfire, the Dark Skyfire toy was also repurposed as the Wings Universe character Zardak. A warlord, Zardak is a reference to the 1980s converters toyline, which also used imported Macross figures. #Transformers

Cyberverse Acid-Storm would fluctuate between having either the male or female Seeker head design throughout their tenure on the show Behind the scenes members would then rectify this by saying it was something Acid-Storm just liked to do #Transformers

Expanding on that, in the story of his death, another bot named "Magnum" was shown. Both bots were mortally wounded by Megatron. Alpha Trion could rebuild one, but not the other. Optimus couldn't choose, and so did not know which bot had become the newly made Ultra Magnus. #Transformers

This actually caused a problem however, as Hasbro officially considered Dion to have died from Megatrons attack in the cartoon, so, the Wings Universe comics course corrected by having Dion die in the events of their stories. #Transformers

While pre-war Autobots Orion Pax and Ariel became famous Autobots in the G1 cartoon, Orion Paxes friend Dion seemingly never became anyone. The Wings Universe comics, set in a nigh identical timeline to the cartoon, implied he was remade into a similiar body and joined the elite gaurd. #Transformers