A planet belonging to the Cybrans, Procyon was the original homeworld of the Cybran Nation.
Once a rough, but liveable world, Procyon is now little more than a grim reminder of the costs associated with the birth of the Cybran Nation.
Dr. Gustaf Brackman, literal and figurative father of the Symbionts, established an all-Symbiont colony on Procyon. Mistrustful of the old Earth Empire, but still a loyal scientist, Brackman established the colony in 2650 and applied for independence in 2663. The Empire responded with force and occupied Procyon. Continuing difficulties between the two sides escalated and soon the Symbionts were fighting a guerrilla war against the occupying Imperial troops. The Earth Empire activated the loyalty programming installed in all Symbionts to keep the rebellion from spreading, but Brackman had already disabled the programming in his followers.
The Imperial Commander, tired of the constant guerrilla attacks, simply began methodically scorching the planet with strategic weapons. Brackman and his followers were forced to flee; Procyon was reduced to nothing more than a desolate wasteland and it was later abandoned by the Earth Empire.
There are rumors that the Cybran Nation has begun to recolonize Procyon, but those rumors cannot be substantiated.