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Z-one

Yu-Gi-Oh!

Z-one's History

Z-one's original appearance

In Z-one's time when he was a scientist, humanity's accelerated evolution leads to a society that is cruel, greedy and corrupt. Then one day, an army of Meklord Emperors appear to attack New Domino City. Watching the chaos that was spreading, Z-one researched a way to stop the Meklord Emperors by stopping their power source, Ener-D and the Planetary Gear which responded to people's hearts. Knowing he himself would not be enough to inspire people to change their ways, Z-one remembered the stories of a legendary hero who had saved New Domino City in the past. Researching Yusei's defeat of the Dark Signers and Earthbound Immortals, Z-one resolved to become Yusei himself, believing that by copying his personality and appearance he could be the hero the people needed. Using footage of Yusei's Duels, he became an identical copy of Yusei, the result being identical to the real Yusei in every detail saved in a cybernetic plate over the right side of his face. To keep the plate concealed Z-one kept his helmet on at all times, only revealing the left side of his face which bore Yusei's criminal mark.[3]

Z-one after assuming Yusei's identity.

As Yusei, Z-one rallied the people of the world, telling them it was their accelerated evolution and greed that had lead to the rise of the Meklord Emperors by reversing the Planetary Gear, and only by changing their society could they make it turn in the proper direction again and hopefully destroy the Meklord Emperors. Achieving Clear Mind and Summoning "Shooting Star Dragon" to battle the Meklord Emperors, Z-one demonstrated that they could defeat the enemies by having the right state of mind. People took notice of his example and followed him, helping each other and learning to understand one another. With their negative feelings gone, the Meklord Emperors stopped attacking them. However, Z-one's efforts were too late, and there were still too many negative emotions in people - Zero Reverse occurred and society was destroyed, leaving few survivors. Z-one's cybernetic plate was damaged during the incident. Since then his outlook changed, as he believed his efforts had been in vain and that changing the hearts of humanity was impossible. Thus, the only way to save his future was to do so in the past, before Ener-D became widely used and the Meklord Emperors appeared.[3]

Z-one saw Antinomy, who having given-up on life, was about to let himself be killed by a Meklord Emperor, but Z-one intervened and blasted the Meklord Emperor away with a laser cannon, saving Antinomy.[11]

Aporia, Antinomy, Paradox and Z-one in their old age, as they worked on a way to restore humanity.

Z-one also met Paradox at some point. In their old age, the two of them and Antinomy met Aporia. As the only survivors of the human race, the four of them believed it to be their mission to create a better future. They tried to dispose of the core power of Ener-D, which wiped out the world before and performed countless experiments to try and find a solution to restore the world to the way it once was. During their attempts, Z-one had his body mechanized in order to prolong his life and his companions began to die.[12]

After Paradox died, Z-one sent an embodiment of him back in time as a trial to eliminate the root source of Duel Monsters, by killing its creator Maximillion Pegasus. However, this plan failed as Paradox ran into the likes of Yugi Muto, Jaden Yuki and Yusei Fudo, who banded together to defeat him.[4][13]

Before Antinomy died, Z-one said that he was going to need his strength to save the world. Antinomy was confident that the day would come when the world would be saved, so to ensure this, he asked that he be put to work as Z-one's servant. After Antinomy died, Z-one sent an embodiment of him to the past, where he was given the mission to protect Yusei Fudo and aid in his growth.[11]

As Aporia was about to die, he placed himself in a capsule and asked Z-one to do whatever it took to prevent their future from ever occurring. He insisted that Z-one split him into three embodiments based on the three despairs of his life. Z-one split Aporia into the embodiments Lester, Primo and Jakob and sent them back to the past, where they served as the Three Pure Nobles.[12]

Z-one also built the Divine Temple out of the ruins of the future New Domino City, including the Daedalus Bridge and Old Ener-D as an energy source.

Pre-World Racing Grand Prix