Medabots (1999) : 1x51

Metabee finds himself in a paradise... a world of Medabots, but no humans, where a Medabot who is apparently Brass calls him ""Kyuumu."" Doctor Meta-Evil reveals that he thinks of himself as a Medabot, having cybernetically enhanced his body. Then, he delivers the ultimate revelation... Eons ago, the beings that we now know as Medabots were the rulers of the Earth. But they were obsessed with battle and war - to evolve and fight, they modified their bodies into robotic, metal, armored forms. But their war decimated both their race and the world, and so the survivors encoded their minds into small metallic hexagons - Medals - so that when the world was returned to life, they might live again, too. But when this race was returned to life, they were no longer what they had been - now they were Medabots. It is within his own memories of this past time that Metabee's mind now resides, as he and Rokusho's former self battle each other as generals of opposing armies.