Unity

Unity was one of the Three Virtues granted by Mata Nui. It represented the importance of doing things together and being united in order to accomplish things and perform Duty, and eventually fulfilling Destiny.

Ga-Koro derived their Principle of Purity from the virtue of Unity. The Le-Matoran's prinicple of faith was derived from Unity and Duty, and the Po-Matoran's principle of creation was derived from Unity and Destiny.

Unity Charm
The Charm of Unity was given to Hahli by Shasa, the Weaver, who respected the virtue of Unity very much. The Charm was used with other Charms to unlock the temples of Purity, Creation and Faith.