Little is known about the Hydrogues. They are a highly aggressive, mercuric lifeform residing in the centres of gas giants and appear to lack emotions, being somewhat robotic in this sense. They possess incredibly devastating weaponry (icewaves and powerful electrical blasts), and have no regard for the human race or Ildirans. They reappeared after the humans ignited the gas giant Oncier, which they inhabited, and began to destroy all human and Ildiran facilities, not appearing to distinguish between the many factions of the two races. Their ships are spherical, heavily armoured (seemingly made out of diamond), and possess a great deal of firepower. They can completely destroy small celestial bodies within a day, and even extinguish stars. The "wind" aspect of the 4 super-powers.