Star Systems
There are apparently 21 known star systems in the immediate sector that are inhabited by alien species. The two main races are the reptillians and the humanoids. The reptillians, however, have a slave race known as greys. There is also an abandoned star system, Lyra, and our own contested Sol system.
Andromeda
A race of highly developed beings, second only to the Paa Tal (or Creators). They are capable of creating solar systems and terraforming planets. Apparently, they know the location of seven creation machines that are capable of making whatever they want to.