A second-year high school student and Guest's childhood friend with medium-length brown hair. She has a strong sense of justice and cannot ignore people in trouble, often getting herself caught up in incidents. She is secretly in love with Guest. She is searching for her father who disappeared several years ago, but has told no one about him.

A giant creature that had been slumbering since ancient times, awakened by the energy of accumulated grudges. Having once wiped out all life on Earth in the past, it has awakened in the modern era to destroy all life once again. Communication is possible.

A being that causes paranormal phenomena in deserted areas to curse those who approach. Its true form is a vengeful spirit that was sealed long ago. After a criminal broke the seal, the spirit possessed them, turning them into an entity that curses people to death. The possessed criminal uses a black sword for self-defense. The spirit itself, appearing as a stand behind the host, is the victim of a human sacrifice who still hates the living. It is characterized by overhead swinging attacks with its large arms and communicates via telepathy.

An entity that attacks using special weapons attached to both hands. While its face looks human, it is clearly non-human. It kidnaps and eats young children. Its special weapons increase its punching power and can also discharge lightning attacks. In reality, he is Mina's father; after being fused with an ancient creature in a certain experiment, his reason vanished and a new personality emerged. Originally quiet, he has become barbaric.

A mysterious man who commands swarms of flies and locusts. He is capable of free flight and possesses high physical abilities. Furthermore, he can use locusts to ravage crops and flies for interference and reconnaissance. His goal is to make insects the new pinnacle of the food chain above humans. He is actually a rapidly evolved insect and can speak, albeit in broken sentences.

A beastman wearing a mysterious mask under his hood. He can fly using a backpack on his back. He is an underworld arms dealer who sells illegally modified weapons. He is a formidable opponent as his own martial arts are strong and he uses modified weapons himself. Since he sells weapons solely for profit, he eliminates anyone who interferes without exception. He speaks like a gentleman and is kind if no harm is intended, but becomes cold and relentless if crossed.

A wolf beastman who controls the giant creature Ganglion. He is quite aggressive, quick to pick fights, and easily angered. He displays martial arts skills at a level no ordinary human can match. He shares a mutual understanding and trust with Ganglion. Ganglion is an ancient creature capable of destroying its surroundings with its massive body and exhaling ice breath. Leon once lived with his family, but they were captured by humans and killed, while Leon was worked as a slave. After meeting Ganglion and killing his master, he now seeks to kill humans alongside Ganglion.

A girl who can manipulate fire and has caused numerous arson incidents. While her physical strength is not high, she can move quickly using fire and punch with flaming fists. The houses targeted by her arson always have children in them. She controls her flames with a control actor on her chest. Her true identity is a high school girl who lost everything in a fire; she was mocked by those around her for the burns on her face, at which point she absorbed a soul-fire and awakened to her fire abilities. She wears a mask to hide her face. Now, she seeks to burn everything that mocked her to ashes. Originally cheerful, she is now silent and inscrutable.

A mechanical warrior with excellent mobility who controls Reclion. The machine has various functions, including reconnaissance, assassination, and hacking. His combat style is physical, utilizing karate techniques and knives hidden in his hands. Equipped with a self-growth program, his potential is infinite. He speaks fluently and can converse in all languages. His true identity is the hero of justice created by a certain doctor years ago, but he realized that humans are the true enemies of the world. He killed the doctor and developed Reclion to exterminate all of humanity.

A weapon built with futuristic technology. It obeys only Star's commands. Its combat style is physical, delivering punches powerful enough to destroy buildings. It can also strike with its tail, which is capable of firing a massive laser beam that levels the surrounding area. It is programmed to destroy key national strongholds. Upon its destruction, a bomb with a ten-kilometer blast radius will detonate.