Preya Ardeen was born in the 31st century on Saturn's moon Titan. She had a sister, Imra, and the two were very close.
When the Blight began rampaging throughout the universe, Preya was amongst its victims and eventually died of the plague.
With Pestilence's death in the 21st century, the Blight ceased to exist. As a result, Preya and all the Worldkiller's other victims survived.
Imra was deeply haunted by Preya's death and became determined to bring her sister back through any means necessary. To this end, Imra traveled back to the 21st century with The Legion to kill Pestilence before she evolved into the Blight.
When Psi accidentally used her psychic powers on Imra, the latter experienced a troubling vision of Preya's death - her greatest fear.
Preya was noted to be a shy, introverted woman, unlike her sister, Imra Ardeen. Despite this, the two shared a strong bond.