Rorzakh

Rorzakh of Onu-Metru were not the strongest or fastest Vahki, but they never gave up on the chase. They would follow their target anywhere, no matter what the risk, continuing even if it meant their own destruction. Their Staffs of Presence made it possible for the Vahki to see and hear whatever the affected Matoran did, without the Matoran being aware.

All of the Rorzakh were destroyed in the Great Cataclysm.