The Nuva Symbols have a Purpose


In the final level of mask of control, there are entrances with the nuva symbols over them and the element written in the bionicle language. On the floor there are the 6 nuva symbols.
I assume that the 6 toa are meant to go on the symbols to get the mask, but Umarak interrupted


As far as I can tell the Nuva symbols represent the Toa themselves or their element. Sadly it seems we won’t get a definitive answer as to what the symbols actually mean or do in the near future.