|Aspect of Society|
|Effects||Maintained morale during war, tied in with kolhii|
The Matoran of the island of Mata Nui developed the Principles from the Three Virtues, Unity, Duty and Destiny, during the Great War to help them get through those times. When they returned to Metru Nui, this belief system was mostly abandoned.
Each Koro had their own Principle, and from each one they derived a kolhii skill. Six crystals based on the Principles were each kept in a temple near the corresponding Koro, and Charms used to represent the Principles, kolhii skills, and Virtues were crafted to function as keys to these temples.
In addition, each Principle had an Enemy, the negative quality inverse to the positive Principle. When the Kanohi Avohkii was discovered in Ta-Wahi, Makuta Teridax chose six Rahkshi whose powers embodied these Enemies for his assault on Mata Nui.
Principles of the Koro
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