The joKara themselves are small serpent-like Parasites, approximately 4 hands long, that require a host body if they are to leave their natural environment. Once they burrowed into body (which can be accomplished by piercing the skin in the neck, or entering through the mouth), the parasite begins to wrap itself around the host's spine. The joKara then weaves itself around the nervous system, where thin filaments are extended that go up into the brain itself.