Plane Walkers

The Plane Walkers are a theoretical species that, if exists, is the most technological advanced civilization known.

The naming of these entities is heavily debated. The name "Plane Walkers" refers to their ability to travel between different planes of existence, though some may call them Plane Drifters or Wanderers.

This species was theorized to exist as the creators of the wormhole network of wich Sol is a part of, as explained in the Ancients' mythology. For unknown reasons, these beings approached the Ancients after they ascended into space and ordered them to not intervene with human affairs until their ascenscion.

It is, of course, just a conjecture. The existance of an intelligent creator explains why the Ancients did not contact humans, but there is no reason to believe the wormhole network couldn't have been naturally created.