Kilrathians are near-humans that evolved in a similar way to Humanity. The only visual difference between humans and calandrians are the red skin of the Kilrathians. Most Kilrathians also sport ritual facial tattoos, signifying great deeds done by the wearer.
The average Kilrathian stand 180 cm tall and weighs 70 kg. He has grey eyes and black or brown hair.
Most Kilrathians are curious and dedicated, a result of their society which promotes dedication to one's caste, family and friends. They are relatively peaceful and open to new experiences, such as meeting other species.
Kilrathians live in a caste-based society, where each caste specializes for a certain aspect of civilization. It is possible to change caste as a result of a great service to Kilrathian society, and so the castes are ever fluctuating in number.
A Kilrathian is physically and mentally similar to humans. Psionic abilities manifest in one out of a million, and these individuals are trained by other Telepaths, and assigned to castes depending on their abilities.