It was said that the union was so peaceful that evil would calcify when it reached the atmosphere of Traken. This union was led by five Consuls who aided the Keeper of Traken. The Keeper drew on all the minds of the entire Traken Union, a power granted by connection to the Source. Each Keeper held office for about a thousand years. Though they had access to advanced technology, many of the Trakenites lived in simple and pastoral surroundings.
The evils attracted to Traken were called "Melkurs", which literally meant "a fly trapped in honey". The Melkurs were immobile while on Traken and would deteriorate when their power no longer remained. The Trakenites felt remorse for them and took care of them until they disappeared. (TV: The Keeper of Traken)
In 1981, the Traken Union was destroyed by a wave of entropy radiating out from the planet Logopolis. Saved and brought to Logopolis by the Watcher, Nyssa of Traken escaped this disaster. (TV: Logopolis)