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Metru were districts in the city of Metru Nui. There were six Metru: Ta-Metru, Po-Metru, Onu-Metru, Le-Metru, Ko-Metru, and Ga-Metru.[1]


Each Metru was named for the element it most represented. The prefix was Matoran for that element.[2]

"For Toa used to the crowds and tall buildings of their metrus, this place was unsettling."[3]