There are a number of Codes of Honour a character may choose at Character Generation.
They cost nothing but demand much.

+3 morale bonus on all Will saves rising to +6 if the Will saving throw is against Corruption. Furthermore, he gains a +3 bonus to Reputation.

The Codes of Honour are:
Barbaric Code of Honour
Civilized Code of Honour
Mercenary Code of Honour
Way of the Warrior

Allegiances: these can be picked up rather easily with GM discression. They generally give a PC +2 circumstance bonus on Charisma based skill checks when dealing with someone of the same allegiance.

Ask the GM for more information on Codes of Honour or Allegiances if interested.