The Sanctum Guard, also known as the Ko-Koro Guard was the organization that protected Ko-Koro. It is the fourth largest military on Mata Nui, behind the Ta-Koro Guard, the Gukko Bird Force, and the Ussalry.
History
Some time after the start of the Great War, the Sanctum Guard was established. Together with the Ta-Koro Guard, they defended the Tren Krom Break from Rahi attacks. Near the end of the War, the North Guard at the Tren Krom Break was attacked, and Makuta's Rahi drove the members of the Guard out into the Drifts, and froze Kopeke in an ice wall.
During the Battle of Kini-Nui, the army of each Koro came to help the Chronicler's Company. It is unknown if they continued onto Metru Nui after the return there, but it is doubtful they stayed banded on Spherus Magna.
Equipment and Tactics
They used ice pickaxes as their primary weapon. The Ko-Matoran on Mata Nui were expert trackers and trap builders, and used these skills to fight the Rahi.