Psions

History
Billions of years ago, on the planet Maltus, the Maltusian immortals studied all aspects of life. They took a local reptile for testing and discovered one part of the lizard's mind had the potential for much greater complexity. They enhanced the creatures and found the new developments were passed to each succeeding generation. The reptiles were released back into the wild to chart their survival rate.

The Maltusians eventually left their world in a great exodus. The enhanced life forms evolved into the Psion race. The early Psions investigated the Maltusian labs and mimicked their creators. They went as far as cutting off their tails to look more like the Maltusians (and as a result, disavowing their original background). After several millennia, the Psions left Maltus to follow their creators, now known as the Guardians of the Universe, who were on Oa.

When the two discovered each other, things were not quite what the Psions expected. The Oans regretted their decision not to destroy their equipment before leaving Maltus. The Psions were forbidden to travel to Oa, though they wished to learn more from the Guardians. Though the Psions had mastered the technology, they had gained little understanding. The Guardians felt responsible for the Psions and sent them to a distant galaxy where they could strive for comprehension. The Guardians ordered the Psions to stay within their assigned area so they would not be disturbed. The Guardians hoped the Psions would achieve their own greatness. The Green Lantern Corps would not be allowed to interfere with the Psions as part of the process.The Guardians' great hope has not come to fruition.

Discovering their creators and then feeling humiliated by the same, the Psions buried the truth. As a species they forgot their background and began anew their scientific work. But as scientists, the Psions asked the questions all thinkers ask, "Where are we from?" and they never stopped asking those questions. Again and again, the Psions discovered the truth about their origins, and every time they suppressed the knowledge. The Psions refuse to acknowledge to themselves that their creators did not want them or believe in them. When hearing the truth, in pain, they go into shock and incapacitate themselves. This process also suppresses their knowledge of their genesis.

Modern Psion
The Psions maintain vast floating laboratories where studies continue. There they exploited the lifeforms they found in the Vegan star system. Working with their science, they created the many species of Vega's twenty-five worlds, subconsciously replicating their own origins. Active against them are the Omega Men, an interstellar group of rebels drawn from the Vegan worlds. In their research, the Psions gave X'Hal virtually supreme power which she ultimately used against them. The Green Lantern Corps is still barred from entering or interfering within Psion designated space; however the Corps and its masters, the Guardians, are now considering removal of that restriction.

Green Lanterns Kyle Rayner and Guy Gardner planned to breach Vegan space in order to retrieve recruit Soranik Natu. The mission was successful, thanks to the skills shown by Soranik, leading to the defeat of the Psions.