|Mask of Diminishment|
|Power(s)||Let user shrink to a height of 6 inches|
The Kanohi Pehkui was the Mask of Diminishment. It gave its user the power to shrink to a minimum height of six inches while still retaining their full strength and power level. This mask power was useful for surprise attacks.
- Great: In Comic 25: Birth of the Rahaga, Norik used his Pehkui to sneak up on Roodaka. Then he returned to his normal size while under her, knocking her over with his shield.
- Toa Hagah Norik - In the shape of a Noble Kiril; lost Kanohi when he became a Rahaga--since restored.