These artificially designed creatures spread throughout the open space, all across the first galactic quadrant. Their mission is still unknown, as well as who had created them, although there are some rumors that they have in fact made themselves on their own. Meaning, they had once been organic life forms, gradually upgrading themselves into a robotic shape.
They are known to use planetary magnetosphere radio frequencies as a means of communication. We have managed to decipher some of their messages on planets and moons in the solar system, but it was always in bits and snippets, not nearly enough to provide more understanding about who they really are and what’s their mission.