The Bohrok-kal were created as a safe guard in case the Bohrok queens were put to sleep. They will restart the swarms!

lehvak-kal was fast and agile. They were constantly disappearing and reappearing from the shadows. Lehvak-Kal had the power of vacuum. This allowed them to absorb the air in a certain area creating a vacuum. This ability could cause very violent deaths

*in a vacuum, no one can hear you scream (because sound needs air to travel)*