Having mastered time control, so they could hold it frozen, the Tolneps send their war vessels (Vulcor class) on long piratical voyages to raid other planets and enslave them.

Known for their technically advanced weapons, the Tolneps can breathe just about anything, see in infrared only (requiring a special filter plate face mask) and have a body density comparable to iron that makes them immune to Psychlo gas. They also have a bite that is deadly poison.

Creeth is the capital of Tolnep and is known for its distinctive architectural style with streets and sections of buildings that wind and intertwine. Also located there is the famous combined public park and slave auction center (slave trading has become a popular activity and industry among Tolneps).

Tolnep is located in the Batafor System (known as Sirius in ancient man-constellation maps), which has only three inhabited planets—the seventh, eighth and ninth. The Tolnep homeland is located on the ninth.

Surrounding the ninth planet are five moons, one of which is named "Asart," which secretly holds the crews, hangars and shops of the entire Tolnep navy. On the back of Asart is a huge diamond with a slash, done with hyperband nullifying material to act as a navigation and identification marker. It is unknown to practically everyone except a fleet officer, and the marker will not show up on standard recorders.

Asart is used for the launching of major war vessels because Tolnep vessels can't operate in a planetary atmosphere due to the great inefficiency of their star energy drives, which, being essentially reaction engines, use up too much of their power. After construction, such vessels are based on Asart and their crews and material are ferried to them from the planet's surface.

The navy base on Asart is Tolnep's dearest and most hard kept secret.