Knight Armor Turbo Changer Optimus Prime is a Voyager-sized figure that transforms from truck to robot in just 2-steps: pulling his whole truck kibble to the front then fold down to complete the robot mode, although converting him back requires some few steps. His only articulation is the elbows, and he features 5mm compatible hands. He also features a "Knight Armor" gimmick, which consists of his mask popping out to his head with the press of the button on his chest. Take note that you need to flip back the mask manually before you turn him back into Truck Mode.
When Sergeant Hound apprehended a criminal going by the name "C-81", rumors that the prisoner was in reality a "Megatron" that had gotten past the TransTechs' security procedures piqued General Optimus Prime's interest. Though Cheetor assured him that it was impossible for a "Megatron" to have been allowed in Axiom Nexus, the General's concerns did not fade. More pressing concerns took over, however, when the entirety of Axiom Nexus, and nearly all of the TransTechs suffered a sudden shutdown due to a surge in the Global Net. General Optimus Prime tasked Bruticus with keeping guard over the prison while he and Hound went to investigate the source of the surge, the planet's core.
Although the original Japanese incarnation of Transformers: Cybertron, known as Transformers: Galaxy Force, was produced apart from Armada and Energon, the series, as originally conceived by Hasbro, was as the third part of the trilogy. The English language dub of the series treats it as such. Consequently, inconsistencies arise between Cybertron and the other two series, but have been explained by the Cybertron comic book, available exclusively through the Official Transformers Collectors Club, as the result of fluctuations in the fabric of reality caused by the Unicron-induced black hole.
This figure contains an unusual amount of sculpted detail on the inside of the plastic. The gorilla mode's chest has a ribcage, and the inside of the gorilla's face has a sculpted microphone, which lines up perfectly with the robot mode's head! Also, opening this toy's chest in robot mode reveals sculpted detail resembling the Key to Vector Sigma as it appeared in Beast Machines.
Alternity Convoy transforms into a 1:32 scale Nissan GT-R, featuring die-cast metal parts, an opening hood, trunk and doors, as well as an interior, complete with his feet and thighs being sculpted to form the back seats. This complex figure stands at 6.5" tall, and is armed with a pair of blasters on each arm. In the hyper-dimensional world of the oft-confusing Alternity fiction, this figure specifically represents the Optimus Prime of universal stream Primax 903.0 Beta.
The conclusion to the storyline was forestalled when Hasbro retracted 3H Enterprise's license, but an explanation can be found in issue 8 of the Transformers Collectors Club magazine, Cybertron/Robots in Disguise. In this issue, Prime tells the tale of how Unicron's forces were defeated in the last battle by Optimus Primal's forces and Unicron disappeared into the black hole opened in Transformers: Energon. Combined as Omega Prime, they could not escape fast enough, and were sucked into another dimension.
Then he dreamed of awakening, only to find his troops smashed. Realizing his only hope for survival lay with Cybertron, Optimus then boarded the ship the Autobots were repairing, and travelled back to his home planet. Arriving on Cybertron, he found it completely under Decepticon domination. Optimus then met an old Autobot codger who pleaded that he return to Earth to gather a force that could overthrow the Decepticon’s regime. Optimus remorsefully told the old Autobot that there could be no reinforcements from the planet Earth. The two Autobots were then swarmed by Decepticon police officers, who Optimus fought until his dying breath…
The TakaraTomy "Autobot Alliance" release of this toy has some significant differences, including casting the red plastic in a darker shade, making his shin and wheel joints grey rather than Hasbro's bronze, painting the Matrix of Leadership silver, and swapping out the dual energon swords for battle hooks, similar to 2010's Leader class Optimus Prime. However, due to the Japanese release retaining the Hasbro packaging, the box still advertises the dual energon swords rather than the hooks. He retains the masked face used for the Hasbro release.