The average Lurian was approximately the same height as the average Human (perhaps a few centimeters taller), but had a much broader and heavier body. Lurians were grayish- or tan-skinned beings descended from mammals. Their most noteworthy feature was their narrow, elongated heads. They had wide mouths, puggish noses, and small, deep-set eyes.
Morn (pictured) was the only Lurian ever seen on screen, but it was stated that most Lurians actually did have hair; Morn had just gone bald.
It remains unknown, whether a large quantity of children is common for Lurians, or if it is just a coincidence that Morn had 17 siblings.