Karai

The Kanohi Karai were originally created to execute traitors and/or criminals. It was made of Energized Protodermis, which meant it could transform Matoran into Toa.

The Kanohi Karai were used by Toa Firuka, Toa Deron, and Toa Irishka.

Design
The design for the Kanohi Karai was created by Lekaru, a mask maker and a good friend of Firuka when he was sane. The Turaga ordered him to mass produce these masks in different shapes and sizes. Lekaru obeyed for years, up until it was used on Firuka, Irishka, and Deron, three friends of his who were punished for nothing, except for Firuka, who was insane.

They would often appear as a dark gunmetal grey, and would often resemble a normal Kanohi.

Abilities
A Kanohi Karai was able to amplify regular mask powers, such as teleportation. The user wouldn't need to see something to teleport there, and could bring other beings along with them, unlike a normal Kualsi. However, there are some limits, as the user could only bring two beings with them, and no more than two.