So I'm confused. The masks always had powers of their own right? The Matoran make them using Kanoka, the combination of which determines the mask power and the level of the mask power (Great, noble, etc) so when was it retconned that masks don't have powers? I know that Masks do allow Toa more energy when worn, (presumably it does the same with other species but I don't think that was ever established)The power of the mask is determined by the disks used and the purity of the protodermis of said disks. However a Kanohi can be shaped as whatever mask, and have the power of another, generally though the shape of the mask is associated with the power assigned to said mask shape. As for unpowered masks, those are just masks made with inferior disks, that do not hold any power, which said disks are basically just blunt throwing object normally, or disks with weak powers. The disks can be formed into essentially any shape, like the powered ones. But it would seem the Matoran either have a favoritism to pre-existing mask shapes when it comes to the power it holds, or they don't often put one and one to tegether and realize that the shape doesn't inherently matter. One of the two. Personally, I am split on this piece of lore, on one hand I think it's awesome that the mask itself doesn't have to inherently be shaped a certain way to hold a power, but on the other hand I feel it could spiral out of control into a special-snowflake type situation, where any mask can have any power and any shape, which for an individual consumer looking fir a custom mask is fine, but if such masks were put out the general matoran public would not exactly know what power the mask itself holds, they may assume it is one power but really is another. But that brings up another things, yes I am aware that most matoran probably do not wear great kanohi, though what if, hypothetically, a matoran wearing a mask like that became a toa, so for example it looks like a Hau, if that Matoran were to become a Toa, if that hau was made from the proper disks than would have the proper power, however, if it made from the disks for a Kakama, than it would have the power of such. If that matoran became a Toa and thought they;d have the power of sheilding but istead has teh power of speed, though that would be kinda cool as say a toy, that matoran in-character would probably feel japped and somewhat betrayed. However, all that asside, take to note this, the powers of the masks are determined from the disks and their purity, those disks are forged into a specific shape, though I suppose they could be cast molded instead, and that almost always the specific shape has association with a power, however it could be requested that the shape for the mask be different than would suggest the power to be.