Zombie A non-human species also known as living corpses or the living dead. Former humans brought back to life as zombies due to a special infectious disease. Though they can move, they are still corpses, meaning injuries and wounds do not heal, and their bodies decay unless appropriate measures are taken. With the recent establishment of preservation technology, they are able to live much like humans thanks to an antiseptic fluid that serves as a blood substitute.

Early Zombie Zombies created before the establishment of preservation technology. To prevent further decay, they spend most of their time in refrigerated rooms. They are only able to go outside during cold winter periods. Because of their incomplete preservation, their brains are not entirely intact, making them very easygoing with energy levels of a person who has just woken up.

Mummy A zombie subspecies from dry desert areas. Their arid environment keeps them safe from decay, and even without preservative measures, their bodies remain intact. However, their arid environment has also robbed their skin of its moisture, requiring them to take long baths to replenish their fluids. They supplement this by sucking the life force out of young men to preserve their beauty, but this functions only as a placebo. Since many of them were ancient royalty or nobility in life, they often have difficult personalities.

Jiang Shi (Chinese Hopping Vampire) A zombie subspecies found primarily in Asian countries such as China and Taiwan. Unlike standard zombies, hopping vampires are severely affected by the symptoms of rigor-mortis, making their joints, especially their elbows and knees, particularly stiff. Because of this, they must practice tai chi every morning to stretch. However, their joints always stiffen to some degree while they sleep, forcing them to hop around with their elbows and knees locked straight out.