Representatives of technologically advanced alien civilization connected to the bright individuals of different races via brain to brain telepathy and convinced them to begin artificial cyber evolution of their races.
From their perspective, adapting ability of life forms to different gravity levels inside various exoplanets, different atmospheres and diverse temperatures does not allow representatives of all formed civilizations to join a larger space groups and communicate productively inside their Universal mind control platform while remaining biologically active. For that reason, through transformation of races into robotic units they were trying to give forced solution for that problem. However, they were astonished when realized that powerful leader with his astral army from the civilization developed around inconsiderable star can pose a real danger to their dominance inside space-time.