The Chubbits were a species of bipedal, sentient reptiles indigenous to the desert world of Aridus in the Expansion Region. The average Chubbit stood shorter than a fully grown Human. Their skin was green or yellow, although some featured red or black spots. Their nervous system was easily crippled by ultra-strong frequency waves. On their dry homeworld, the Chubbits made use of indigenous technology such as wind-runners, wheeled vehicles that were propelled by large sails.