Mongo Fiacostavu, (-2834, ?) was a quarryman in Motsetsi.
Mongo believed in Animism.
He lived a life of poverty. He was able to eat and sleep under a shelter, but ended with having no possession at all. He belonged to the low caste of the society, and had some friends among the servants, beggars and workers. He had a low knowledge of life, summing up to some technical tricks and tales from Motsetsi. He was vigorous, muscular, and had a near perfect body. He was a determined one, living an independant way of life.