The Warriors are military race which with Dom'Razak form a civilization which has control over the Tadpole Galaxy. While the Dom'Razak are traders, scientists and leaders the "Warriors" due to their nature very soon took over the role of the military and workers.
Humans investigation about them can be read HERE.
After the Dom'Razak became hostile to the Dom'Kavash and invaded the Inner Core Sector, the Warriors followed them and together with the Dom'Razak settled in Venn, Mepther and Ryssk Systems.
There is no known way to turn friendlier with the Warriors for anyone.