Bohrok Kal Nuhvok-Kal
When the Toa battled and then trapped the Bahrag twins, their captivity awoke the Bohrok-Kal. The Kal are six Bohrok controlled by advanced krana. They have only one mission in life: find the Bahrag, free the Bahrag and unleash the swarms once more. They are driven neither by good or evil, but by duty.
The Nuhvok-Kal sacrifices speed for sheer power. Its gravity shield makes it one of the most dangerous Bohrok-Kal, but it seems to be in no hurry to fight. Perhaps the reason is that as soon as it brings its gravity shield into play, the struggle is over in seconds... The Nuhvok-Kal’s gravity shield has the dual ability to negate gravity (so that its target becomes lighter than air and starts to float away), or intensify gravity (so that its target becomes much more dense, and sinks into the ground). To be sure of defeating Nuhvok-Kal, the Toa Nuva should face him only above ground.
The Bohrok-Kal were destroyed when the Toa Nuva channeled all their Elemental Energies into the symbols on the protodermis cage holding the Bahrag, which they were touching with their krana. The Bohrok-Kal were consumed by their own power.