separated from their bodies. Luckily, Red Alert has created a vaccine program (based on Technology from Vector prime's sword) to help but it is revealed that Jetfire has Trypanophobia and while the Autobots are able to reach the planet, the Decepticons are led there by the enigmatic Soundwave. Bested by the planet's leader Metroplex, Megatron taps the key's power to become Galvatron, and Sideways and Soundwave reveal themselves to be inhabitants of Planet X, a world destroyed by the Gigantions, upon whom they seek revenge. Galvatron blasts them and Starscream into another dimension and acquires the Lock and Keys for himself, intending to use their power to accelerate the universal degeneration caused by the black hole and remake the cosmos in his own image. Vector Prime sacrifices his life to allow the Autobots to return to their home universe, and the five planet leaders confront Galvatron within the black hole and defeat him. With all the Cyber Planet Keys now in his possession, Primus uses their power to finally seal the black hole, ending its threat. As the planet's various civilizations attempt to return to life as normal, Galvatron attacks the Autobots for one final time. Without any troops to call his own, Galvatron engages Optimus Prime in a one-on-one duel, and is finally destroyed for good. As Galvatron is dying, he places his fist on Optimus' chest and says his final words. In the Japanese dub, he says "Galaxy Convoy..." which is Optimus' name in the Japanese version of the show. His last words in the American dub, however, are "I still function. You haven't won. Not while my spark still burns..." As he starts chuckling evilly, Optimus says "You fought well. Goodbye, Galvatron." As Galvatron disintegrates to space dust, Optimus kneels in front of Vector Prime's sword that Optimus used to slay Galvatron, still injured. As Jetfire and the others run over to Optimus to check on him, Optimus says "Don't worry. You won't get rid of me that easily." Galvatron is later seen in the credits of the last episode engaging Vector Prime in battle. With this final victory, Optimus Prime begins a new space bridge initiative, and the Transformers set sail for the four corners of the universe, and new adventures. Cyber Planet Keys Cyber Planet Keys (Planet Force in Galaxy Force) are four mystical items that form the crux of Transformers: Cybertron's plot; in order