With spiritual power alone, a soul could pilot a Mecha, but the physical body couldn't withstand the 'pressure' it exerted. Therefore, in the Federation, only those who had awakened both their spiritual power and their Genes could pilot a Mecha, making Mecha Warriors an extremely scarce resource.
The third type were ordinary people.
Throughout the long river of evolution, they had retained their original Genes, which should have been a good thing—
But stagnation meant a lack of evolution. Without strength or talent, they were inferior to others in every way. These people were gradually exiled to low-level star systems, swept aside by the tides of time.
Mo Chengyu was a classic example of the second type. Before even reaching adulthood, she had demonstrated astonishing talent by awakening Level 2S spiritual power. Unfortunately, she had only awakened her spiritual power and had not inherited her family's Beast Clan Genes.
