A race of serpent/worm-like beings that use nuclear energy to power their bodies. The Ctho come from the planet Anzif of the Frlo system.
THE PLANET
Anzif (a combination of the Ctho words anll meaning “ray” and ziful meaning “riches”) is an Earth-sized world with earth level gravity orbiting the blue giant star Frlo (meaning “maker”). With the atmosphere being 50% H2, 40% O2, and 10% HE.
The planet is about 68% barren rocky areas, with large heavily concentrated mountain regions, with the rest being oceans. One of these areas is “Cuiesset”, meaning “Challenge of the navigator.” Originally in the ancient past Anzif was an ocean world, however, this changed due to how the electrical activity in the system acts, and how it acts on the planet. These electrical effects, such as Birkeland currents made craters, and moved and concentrated large amounts of material into dense regions, leading to there being large subterranean areas, caverns, and caves. Which caused most of the water to go deep underground, with most of the water still on the surface either being turned into other materials by electric forces or was made into vapor and/or burned off the planet by radiation.
This has lead to many different forms of wildlife to form in these areas, with more traditional life along with plant life forming underground, with the environment being a mix of great rivers and plains/forest areas with some rocky areas, while life on the surface evolved to handle the mountains, such as being either sky, or land-based and having their bodies designed to move around these areas, such as air based life using electromagnetism to fly. While major electric based effects rarely happen, small-scale ones happen often. Examples include Auroras, extreme weather such as lighting, small-scale burst of radiation, and elemental transmutation. The last example along with the change in the geology of the planet has lead to the many heavy and light elements to form and appear on both the surface and low underground areas. One of these major effects that do happen is called “the great light.” An event that happens every 50 years where huge amounts of electromagnetic radiation, mostly ultraviolet, and x rays happen across the planet, which leads to the planet to be temporarily irradiated for a short time along with some of the life out in the open killed outright. In addition to this, the electrical effects cause large-scale transmutation to some of the surface material, both organic and inorganic, and some changes to the geology of the planet. Which is how the planet got the name “ray of riches.”