35th century

By the 35th century, cyborgs were a common sight on Earth, apparently making up a decent percentage of the human population.

In 3488, one such cyborg, Cybron; was a dictator that was overthrown by other cyborgs. Because he had lost his power over mankind, he decided to travel back to the 20th century and rule the human race of that era.

Upon arrival, he thought that humanity would be easy to conquer, since they were so primitive during that period. To his surprise, it wasn't as easy as he anticipated, because he is defeated fairly quickly by Superman, after he only managed to take over the city of Metropolis.

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