|Mask of Hunger|
|Power(s)||Let user drain energy, moral light, or positive emotions|
|Notable Wearer(s)||Vamprah (formerly)|
The Kanohi Avsa was the Mask of Hunger. It gave its user the power to drain light, physical energy, or positive emotions from a single target over a distance. Physical energy stolen by the user will increase the user's physical abilities. Avsa can be used to make completely lightless beings by draining all of a target's light and then placing a "mind barrier" in the target. However, a Klakk can break this barrier, allowing light to return.
- Great: In Comic 12: Realm of Fear, Vamprah used his Great Avsa on Kopaka to quickly drain his energy. Vamprah also used his Avsa to drain Radiak's light in BIONICLE Legends 9: Shadows in the Sky, turning him into a Shadow Matoran.
- The Avsa worn by Vamprah was created out of protosteel.
- As a side-effect of being worn by a shapeshifter, whenever Vamprah shapeshifted, his Avsa would change with him.
- The Avsa was considered an immoral mask by Toa. As such, they would not usually wear one.