Xenoking

''"There is no room for Autobots or Decepticons on this world... No, it is my right to rule. I will begin by assembling an army. Only then shall I have the power to seize this world as my own." ''-Xenoking declaring his plan

There is very little information regarding the mysterious Xenoking. Perhaps that is because he is not entirely Cybertronian, the result of illegal experimentation that made him who he is. Broken on both the inside and outside, he was persuaded by the Decepticons into believing the Autobots were responsible. For a brief time, he served Megatron as one of his greatest assets, but as his intelligence increased, the self-proclaimed "Xenoking" eventually discovered the lies planted in his memory core by the Decepticon Leader. Now his allegiance is to himself; he has no interest in serving a deceitful cause or aiding those who fight to save Cybertron.

Often Xenoking searches for answers regarding his creation and seeking out a cure. However, as time passed, he begun to discover his own strength and power surpassed even the strongest of Cybertronians, including that of the Last of the Primes. As the first Xenoformer, Xenoking now spends his days creating others like himself while simultaneously attempting to uncover the reasons behind his own creation. Far as anybody knows, Xenoking's lifelong goal is to wipe out both the Autobots and Decepticons, starting with Optimus Prime and Megatron.

The exact extent of his powers isn't clear, but he seems strong enough to give Prime a run for his money.