Bas'o is one of the Mwangi tribes. They are tall and athletic. Mostly peaceful Zenj nomads, they follow the antelope herds through the plains surrounding Kalabuto and Mzali. Their culture is a warrior culture. They deeply distrust strangers but they don't react in violence but only if they feel threatened, challenged, or insulted. Bas'o pass through Sargavan lands twice a year for a duration of 2 months in each pass.