Kuchikukan is an evil spiritual being who manifests himself as a red cloud. He doesn't have a corporeal body, so he has to possess the body of any living or inanimate being to use it as his vessel. He is a very dangerous demon that brings the apocalypse with him and as such was defeated by General Shingen and sealed away in an urn many centuries ago. He is an Adaptive Spirit; as such he possess the power to tap into whatever aspects or traits available to the host he uses as the vessels powers, thus he gets stronger by learning more about his vessel taking the drab and turning it deadly.