Cybria

"Be careful. Fly to close to that planet without permission and we'll be landing under a hail of plasma bolts."

Cybria is a large ice world, and the homeworld of the Cybrian people. The planet is the most heavily fortified planet in all of the Xyon Sector, surpassing even the famed defenses of Marza in sheer size and scale. All of these were built with the goal of deterring Cybria's age-old enemy, Xania, from invading and conquering the planet as they did during the ancient Xanian Wars. The planet is largely left be itself as the Cybrians tend to get "trigger-happy" when foreign vessels appear near the vicinity of their planet.

The Cybrians themselves are a military race, having to harden themselves simply to survive in the harsh snowstorms of the planet, which enshroud the planet surface in darkness simply because sunlight cannot penetrate the dense thunder clouds. The Cybrians live a huge circular cities that house tens of millions under super-strong glass domes, allowing the people to see the sky. These cities are connected to one another by large overground and underground tunnels the span hundreds to thousands of miles in length.