Chelys is a highly irradiated planet, due to orbiting a pulsar. It is a dead planet, and only Arthrowheels are sapient. Despite this, they are sometimes out of control, and can be very aggressive due to radiation.
Chelys has undergone a supernova explosion. Many species hid in the tunnels of the planet, but when the surface was devastated, Arthrowheels and some other, non-sapient species, went out, and adapted to the new environment.
- Small non-sapient species
Chelysis a play on Chela, Italian for "pincer" or "claw"