BUSHI are non-samurai fighters in the Orient. They are also known as "Peasant Warriors." Such a label can easily mislead for there are many "peasant warriors" who have skills that are equal to or greater than the famed samurai.
A member of The Five, or Mastajeer's Five, were specially handpicked by Mastajeer during the conception of the Agency. They were specifically trained in the case that The Agency would fall and Marga a (Future Tech Sci Fi)