One of five known systems within the Mayagil sector, the Colu system is composed of six planets, one asteroid field, and one star. The star, Colu, exhibits no special or unique characteristics. A relatively empty system, many who first arrive in Colu are stunned to see very little traffic into or out of the area. Considering that the system contains the homeworld of the technologically-advanced Bith species, it is easy to understand the confusion.

The absence of major megalopolises within the Colu system is due to the system being considered cursed. The original Bith homeworld of Clak'Dor VII was devastated after a civil war among the species. Two of their original colony worlds, Clak'Dor IV and VI, were nearly wiped out due to disease and natural disasters. Rumors abound of a second sentient race that once lived on one of the other planets, but all trace of them is long gone. Even superstitious pirates and smugglers are reluctant to set up operations within the boundaries of the system, and because of Colu's remote location and mostly non-human presence, no real attempts have been made to help the system recover and develop.

Because of the biological devastation that the Bith have suffered within the system, every ship is vigorously scanned before being allowed to approach any planet. No unknown biological entity is allowed on either the homeworld or the colonies. Ships heading to Clak'Dor VII are strongly encouraged to stay on established routes as deviation leaves the craft susceptible to terrific winds. There are no unauthorized landings outside of the cities on Clak'Dor VII.

There is at least one source of great economic value for the Colu system, and that is the planet of Clak'Dor II. A few mining companies have sent ships to the system's closest planet to the sun, but after the loss of two survey ships to the intense radiation of the star, most are reluctant to go back anytime soon.