Much like the Chapoli themselves, nearly everything on their homeworld moves using some sort of spring to bounce around. Chapoli have tough exoskeletons made of chitin, as well as some internal bones made of metal. Their springs, hair, and wings are also made of metal, and their springs continue to grow no matter their age. Chapoli communicate by rubbing their wings together on different files to produce different sounds. As Chapoli age, their files wear out and produce less distinct sounds. Luckily, prosthetic files exist and they can also be used to produce different sounds than the natural ones. On their homeworlds, Chapoli are free to bounce around to their hearts’ content. On other planets they have to do a sort of gallop using their fists and their springs so they don’t bounce all over the place.
Drawing by Hydromecha