Ossan

The Ossan were a humanoid species used (and sold) as slaves by the Ancient Houses of the Senex Sector. Their homeworld was Ossel II, and they had sizeable populations on Asmeru and Karfeddion (which House Vandron used as an Ossan breeding planet).

Ossan have four arms and two legs, with hands and feet evolved for digging, with their back evolved for lifting. Their thick skin provides natural protection from heat and cold, as well as low-level radiation. Ossan heads are dominated by their large eyes which enable them to see in the dark; they have small, inflexible mouths, and no noses or ears.