This is Toa Sayla. She (yes she) was found by the other Toa Xiak. When they found her, she as wondering in the jungles of Texerk Nui. But now that the Toa have found her she is ready for battle once more and this time she is prepared for anything that's coming her way.
Quoting AMT Guardian of Earth
actually no, neptune has two orange gali masks, the new one im talking about has two red ones like the mask sayla wears and isnt on mocpages yet, but he does resemble neptune