When a group of rebellious Headmasters led by Zarak joined with Galvatron's Decepticons in an attack on Cybertron, the Autobot Headmasters, led by Fortress returned to their home planet to aid in its defense. The situation soon went from bad to worse when it was revealed that Vector Sigma, the mega-computer at the planet's heart, was destabilizing, and Optimus Prime again sacrificed his life to save Cybertron. This soon proved to be only delaying the inevitable, however, when a bomb attack instigated by Zarak turned Cybertron into a burnt-out, inhospitable husk. Rodimus Prime departed to search for a new planet for the Transformers to live on, leaving Fortress in command, operating from the planet Athenia. Meanwhile, Zarak replaced Galvatron - who had vanished in the explosion - as Decepticon leader, constructing a personal Transtector so that he could battle Fortress's own giant form, Fortress Maximus, and redubbing himself Scorponok.
Although populated mainly with new characters, The Headmasters did continue to feature characters from all previous seasons, including new versions of Soundwave and Blaster, rebuilt after a duel that destroyed them both as Soundblaster and Twincast. Human Daniel Witwicky and his young Autobot friend Wheelie also played major roles in the series, serving as the youthful characters for the audience to identify with. More new characters continued to pour in when Galvatron returned to leadership and the Decepticons embarked on a space voyage, ransacking planets in a chain of stories that introduced the Horrorcons and Autobot and Decepticon Clones. The return to Earth was no less momentous, as the Decepticon ninja six-changer Sixshot killed Ultra Magnus, and the Autobot Headmasters finished off Galvatron. When the Decepticons then returned to Master, refugees from the planet were caught in a plasma bomb accident that fused them to the arms of several Autobots and Decepticons, creating the Targetmasters, and in a final move, Scorponok attempted the destruction of Earth, only to be foiled, thanks in part to a traitorous Sixshot.
With the departure of the Autobots and Decepticons from Earth at the end of The Headmasters, a small group of Autobots remained to guard the planet, having hidden amongst mankind for thousands of years thanks to their "Pretender" powers, which allowed them to shrink down and adopt the forms of human beings. However, the sudden re-appearance of their formerly-defeated Decepticon counterparts, now in the service of the mysterious energy entity Devil Z, means that the Autobots must drop their disguises and return to battle once more. But this is only the beginning of the most unusual Transformer war yet - as the battle escalates, human beings themselves take sides, and, imbued with the power of the "Masterforce", merge with Transtectors sent to Earth by the Autobots in space to become Transformers themselves as the "Headmaster Juniors". But the Decepticons have Headmaster Juniors of their own, and as the conflict rages, events converge on the creation of the most powerful super-robot lifeforms yet - the Godmasters!
Originally intended to be a full-length direct-to-video (OVA) series, 1990s Transformers: Zone was cancelled after only one episode, making it the last Generation 1 animated project. Following on from Victory, the mysterious three-faced insectoid being, Violenjiger dispatches the nine "Great Decepticon Generals" - Devastator, Menasor, Bruticus, Trypticon, Predaking, Abominus, King Poseidon, Overlord and BlackZarak - to acquire "Zone Energy", destroying the planet Feminia to obtain the world's store. Caught in the destruction of the planet, Star Saber is rescued by Dai Atlas, who then repels an attack by the Decepticons, and is appointed the new Autobot commander at the conclusion of the episode.
After the unremarkable performance of the Generation 2 line, Hasbro aimed to completely re-work the Transformers premise; the result was Beast Wars: Transformers, which featured robots with familiar names and organic beast modes. As per the original toy packaging bios and mini-comic, the intention was originally to have the series be a direct continuation of the adventures of the "Generation 1" Transformers, but that would soon change with the advent of the animated series. Produced by Canadian animation house Mainframe Entertainment, the computer-animated show was unlike any Transformers cartoons before it, both visually and in terms of story. With Larry DiTillio and Bob Forward at the helm as story editors, it was planned for the show to start afresh, with no ties to anything that had gone before, but the off-handed reference to the "Great War" included in the first episode set the internet fandom ablaze. DiTillio and Forward became occasional posters on the alt.toys.transformers newsgroup, and through this back-and-forth interaction with fans, plus their own research of previous Transformers fiction, the Beast Wars animated series soon began to grow, establishing its place as the future - and past - of the larger Generation 1 timeline.
As controversial as Beast Wars started out, it was nothing compared to the controversy that would result from the infamous Beast Machines. The series was the only Transformers animated series to be fully plotted from start to finish by Marty Isenberg and Robert N. Skir, writers unfamiliar with Transformers lore who sought to produce the series as, in Skir's words, a "religious epic novel for television". The series tackled the heavy philosophical concept of what it meant to live in an increasingly technological society, running to 26 episodes over two seasons, though in its native Canada, the show was aired simply in one long 26-episode run.
As Beast Machines begins, viewers rejoin Optimus Primal and his Maximals as they return to Cybertron, amnesiac and unable to recall how they got there, only to discover that the planet is now under Megatron's rule, its cities deserted, its occupants stripped of their sparks. An encounter with the ancient Cybertronian computer, the Oracle, sees them reformatted into new technorganic bodies that blend their mechanical natures with the organic material they acquired on Earth, and as the story of the show develops, an organic past to Cybertron is steadily revealed, as is the story of the Maximal's missing memories and friends. Influences from the original Transformers began to creep into the show as they had with Beast Wars before it, until more obscure concepts such as the key to Vector Sigma and the Plasma Energy Chamber played major roles in the series, each one exemplifying one of the mantras espoused - Primal's dedication to seeing the organic flourish, and Megatron's desire for unfeeling, unthinking technological perfection. The clash between these two powers marked the end of the first season, and served to provide Primal with the revelation that drove the second - that he had been wrong, and that the Oracle desired not the domination of one power over the other, but a balance between the organic and the technological. The second season of the show dove headlong into the storyline, with Megatron body-swapping repeatedly, and the concept of the show allowing for such left-field creations as an entirely organic Transformer that changed from beast to beast, and a Maximal who transformed into a plant. The series concluded with a drawn-out battle between Primal and Megatron, which ultimately concluded with their deaths, allowing the planet-wide reformatting of Cybertron into a technorganic paradise.
Renamed Transformers: Robots in Disguise (regularly referred to with the acronym of RiD by fans) the series stands alone, unconnected to any of the previous continuities as a complete, self-contained universe. Conceptually, the show united ideas from across the G1 and Beast eras by pitting the vehicular Autobots, led by Optimus Prime, against the bestial Predacons, led by Megatron, and through the inclusion of classic concepts such as Headmaster and combining technology; dubbed into English by Saban Entertainment, many fan-friendly references to the previous continuities were also added. The first story arc of the series is a series of episodic adventures introducing the majority of the cast - like the original animated series, it was very Autobot-heavy, with most characters being newly designed (bar the Spy Changers, repainted versions of Generation 2 figures, and Tow-Line and Skid-Z, repainted Machine Wars toys), while on the Predacon side, only Megatron was a new mould, with his troops being repaints of Beast Wars Transmetal 2 toys. The trend continued into the second story arc, which introduced RiD's version of the Decepticons - redecos of the G1 Combaticons and G2 "Laser Optimus Prime" toy - and Optimus Prime's bitter brother, Ultra Magnus. This led smoothly into the third and final arc of the show, which saw Magnus and Prime merge into Omega Prime, and Decepticon leader Scourge began his plot to wrest the power of the ancient battle station, Fortress Maximus, away from both Megatron and the Autobots.
The English-language version of Armada is infamous for having been produced in haste for several reasons, most prominently the fact that Cartoon Network would not sign off on the series without a certain number of episodes already completed. To meet this demand, the dubbing studio was forced to work with only partially complete episodes, with animation of a wildly varying quality, containing many errors that were later corrected for the Japanese broadcast. Additionally, there was rarely even enough time to produce more than a first draft of the translated script, leading to many errors in translation making it into the finished product, including incorrect character names, flat, transliterated speech, and at times, utterly nonsensical dialogue that did not match the action onscreen.