The Krana Ja-Kal was the breed of Krana that was able to detect distant objects and enhance all the senses of the Bohrok-Kal. It remained in one of the Bohrok-Kal before they were defeated, when it then escaped from the Toa Nuva before being harmed. Ja-Kal were created with the substance that formed the Bohrok-Kal used on a Krana Ja. They could act without the Bahrag controlling them, generate a shield when about to finish their mission, and communicate using telepathy.