While samurai who follow the order of the warrior typically adhere to the principles of bravery and duty in order to live a life that emphasizes honor, there exist others who are motivated by more selfish goals. These evil samurai follow the order of the Black Daimyo, and may be vicious warlords or warriors in the service to some ruthless lord.
They usually worship General Susumu, the patron god of sadistic samurai, and they uphold the virtues of violence and pride above all other things.
Samurai of the order of the Black Daimyo function exactly like samurai of the order of the warrior—they simply pursue war and glory instead of honor and heroism.
Pathfinder Player Companion: Dragon Empires Primer © 2011, Paizo Publishing, LLC; Authors: Tim Hitchcock and Colin McComb.