Arthron

The Kanohi Arthron was the Mask of Sonar. It allowed the user to sense the movements of objects through echos, like something moving in the water. This mask could detect invisible beings, so in theory, it could see someone using a Huna or a Volitak. It did not identify details about the object or being.

Known Wearers

 * Jaller (Toa Mahri)