The Vahki

The police of Metru Nui. These robots were created by one Onu-Matoran named Nuparu. The Vahki pieces were manufactured in Ta-Metru and shipped to Po-Metru to be assembled. It is believed that over 50 000 Vahki were created to protect Metru Nui and they served till the end when the Visorak horde invaded the city and destroyed them all.