Three commonalities all Inga Horrors share is a preference of hunting at night, their blood marking someone for death as Horrors will have an increased desirability for the afflicted, and speaking in the Makai language which can be understood by someone well-versed in the language or a potential host, usually adopting a human language upon possession. While slain on a regular basis, Horrors can never truly die so long as darkness exists in the hearts of men. Upon a physical death, the Horror's essence is sealed within a Makaiken until its essence is formed into a dagger that is entrusted to a Watchdog to be sent back to the Demon World. Though there is a one night relief in the that occurs once every 20 years to bar any passage of Horrors into the human world, a slain Inga Horror can still return later. Trace essences of slain Horrors latch onto a Makai Knight and accumulate, requiring him to undergo a ritualistic purification periodically. In the case of those who bear the title of Garo, the essence of Horrors that the Garo user slain eventually forms into a Zaji, vowing slay whoever is holding the title of Garo at the moment. While Inga Horrors taken on human forms have no weakness against sunlight and can operate normally during daytime, they have an aversion nonetheless of showing their true forms under broad daylight. As such, Makai Knights almost never need to draw their blades for combat before sundown.