|Primary Location||Bohrok Nest|
|Functionalities||Key to the Bahrag's Toa Seal|
When the Toa unleashed an attack by firing all their elemental powers on the Bahrag, it created a seal around them, with the Nuva Cube beneath it. The six Nuva Symbols also appeared at the Toa Nuva's respective Suva.
After the Bohrok-Kal awakened, they managed to steal the Nuva Symbols, which caused the Toa Nuva to lose their elemental powers, and they went back to the Bahrag's chamber to unlock the seal. However, the Toa Nuva then arrived, and Tahu tried using the Kanohi Vahi to stop them, but failed. The Toa then channeled their elemental powers into the symbols, which increased the Bohrok-Kal's powers. The sudden overload destroyed them.
The cube can be unlocked when all six Nuva Symbol latch into their respective slots.