Bohrok Lehvak
The Bohrok are driven by one purpose, to cleanse Mata Nui, restoring it to its former state as a completely barren wasteland. The Bohrok are controlled by the Krana, an intelligent organism, which they cannot function without.
The Lehvak are the only Bohrok swarm designed for combat. Using their crushing shields and dissolving spray, they exist to destroy anything that lives on Mata Nui. Clever and unpredictable, stopping the Lehvak may be the Toa's greatest challenge! With their krana removed, they are still highly difficult to tame.
After the defeat and imprisonment of the Bahrag, the Bohrok had their krana removed and were reprogrammed by the Matoran, to aid in rebuilding the Matoran villages.