In the manga, the Droids were manufactured by Saphir, using the power of the Black Crystal, and were similar in shape and form. According to the Materials Collection, the manga droids were like robots resembling sand figurines; they had no eyes or mouths, and they could only produce screeching noises rather than words. They were able to take on the guise of humans.
In the anime, all of the droids were individuals, and all could talk. When they were destroyed, they dissolved into a pile of sand, implying that they were similar to their manga counterparts, though they also produced a gemstone with the clan's moon on it that faded away after its defeat.
Read more about this topic: Black Moon Clan