The Mask of Creation is a legendary mask of Okoto that was worn by Ekimu prior to the battle of the mask makers, as well as after he was revived by the Toa.
During the siege of the Ancient City of the Mask Makers, Ekimu and the mask were transformed when he walked into the temple of light; the mask filled with light energy, and sent the energy pulsing through Ekimu's body. At this point in time, the mask assumed a transparent light blue color. During the battle between Umarak and the Uniters, Ekimu was weakened and the mask returned to its original golden color.