Hydrax-Tor is a planet in the depths of space. Months ago, a satellite crashed on the planet, leaking out mechanics and substances, creating the current robot inhabitants. Hydrax-Tor also has energy crystals beneath its surface and creatures made of fire, ice or lava. A team of Rock Raiders once travelled through a wormhole and crashed on Hydrax-Tor. They used the crystals to repower their ship and escape, but that's another story.
On the surface, Hydrax energy can be found in small quantities.