Gelu doesn't have a mask. He wears a helmet.
The is no Mask of Nothing...
Bionicle Mask of Light.
Bionicle: The mask of light.
There is no website where you can make your own Bionicle mask.
There is no BIONICLE movie in 2001. You probably mean the movie from 2003 (BIONICLE: Mask of Light)
A Kanohi is the name of a mask in Bionicle. In the Bionicle story, the Matoran name of a mask is 'kanohi'. Each Kanohi has another name (eg.: Toa Tahu's mask: The Kanohi Hau).
BIONICLE: Mask of light, BIONICLE 2 : Legends of metru nui, BIONICLE 3 : Web of shadows, and the newest one BIONICLE 4 : the legend reborn.
There is no BIONICLE set with the Mask of Time (Kanohi Vahi)! The mask came as a promotional item, but it never came with a set. Only the golden Mask of Time came in 2004 with some Vahki sets.
I think you mean Nektann, but he is a skakdi, and he doesn't wear a mask!
If you have Bio-codes (you will find Bio-codes on the back of Bionicle sets), you can put these codes on the Bionicle website. If you have a few of these codes, you get your kanohi mask badge.
It is called the Kaukau, the great mask of water breathing.
from free market there about over 900 bionicle parts there =]