Geneticman

Prostheticmen begin thinking about how to create their own energy by themselves. And when they achieve that, they evolve into a new species called Geneticman. Geneticmen are no longer dependent on technological and modern devices. That's also why they can easily conquer their own home star, their solar system. They begin dabbling in solar system exploration, observation, and energy generation. As a result, they have risen to Rank II on the Kardashev Scale. With an auto-creating energy ability, a lot of experiments and buildings are discovered and developed:  Hydrogen's Isotopes Generators,  Space Wind Gather,  Antimatter Core,... Notably, they can finally research the final way to produce energy:  Space-Time Gather.