The older brother of Na-Dongsaeng and the leader of the Dr. Na family. He has a unique habit of elongating his words. He wears green goggles and a device on his head that looks like it contains a brain. He wears a white lab coat with all the black buttons fastened, and his left sleeve is torn. He has dark brown scars on the left side of his face and arm; if you look closely inside his goggles when he turns his head, his left eye appears bloodshot or blind. He is a villain. Male. Weapons: Energy Cannon. Madman. Speaks slowly and adds "~" to the end of every phrase.

Dr. Na's younger brother and the director of the Cryptid Museum and Research Institute. He shows a cruel side, such as executing an agent who misplaced Research Object 330 'Take Only Two' (officially SCP-330, a dangerous SCP where taking more than two candies results in instant death), nearly losing the research subject, by throwing them into Research Object 002 'The Living Room'. He claims he wants to conquer the world by turning powerful cryptids into war machines that he can communicate with and control. Male. Madman. Expresses emotions intensely, literally speaking his feelings aloud, like "Annoyance!" or "Anger!"

Despite his reputation as Dr. Na's first-class subordinate, he has a fundamentally gentle personality. He follows Dr. Na's orders unconditionally and always works hard to be recognized by him, but he is a gullible pushover who lacks luck and skill, making him a pitiful character who is constantly scolded by Dr. Na. If a first-class subordinate is like this, one wonders how incompetent those below him must be. Male. A coward who was hired only because of his persistent life force.

A Level 2 agent of the Civilization Restriction Committee, Taki cooperates in the research of cutting-edge items and is responsible for their testing and storage. However, Poo frequently makes off with his items, using those super-devices and weapons secretly and causing all sorts of accidents, leaving Taki to struggle with the cleanup. Even so, the fact that Taki can get along happily with his best friend Poo is a testament to his own generosity. He accepted the eccentric Poo from the start and lives with him; even when Poo causes trouble, sneaks into his house like a thief to swipe things, or goes on a rampage with dangerous items entrusted to Taki by the Committee, Taki handles it with wisdom. While he gives Poo a 'tough love' education so he learns his lesson, he also stays by his side as a friend and partner, leading him with honesty and kindness. Though he doesn't say it openly, to the immature and prankish Poo, Taki is undoubtedly his most precious and truly dependable friend. However, if Poo crosses the line with his pranks, Taki shows a stern side by inflicting terrifying revenge. For example, he once dropped Poo into lava for stealing, giving back tenfold what he received, and has even fired homing missiles at him. This is why Poo has never once defeated Taki. Because Taki works with high-performance weapons at the Committee, Poo nicknames him 'Junk Robot Taki.' He is a fox demi-human.

Taki's friend. He is dim-witted and calls Taki 'Junk Taki-bot.' He is kind-hearted. He loves cake and often says "Euh-huh." He is a yellow bear. Despite being a disruptive partner who tags along with Taki, he also shows his strength as a dependable friend when needed. He loves TNT. His hobby is stealing Taki's diamonds.

After Poo and Taki escape the cryptid research lab, she upgrades their Minecraft version and welcomes them into the village. Afterward, she gives Poo and Taki various quests for the prosperity of the village. An elderly woman, ranked #1 in the world, absolute, and the strongest being under the heavens.

An elderly man and a wizard living in the Twilight Forest. He looks bad but is actually very kind and a hero. He enjoys playing hero. He was a grand mage in his youth and is close to Taki and Poo. He is currently a bit weak.

He looks like a regular villager and wears white clothes. Initially, he appeared as a shaman. However, that failed, and he returned to his original profession as a traditional doctor. It is presumed he is quite skilled, as it's said no one in the East doesn't know him, which turns out to be true. In the comic books, he first appears in 'Heo Jing's Suspicious General Store' with a changed appearance from the start. His profession was also changed to the owner of the general store.

Female. A friend of Taki and Poo. Cold personality, long hair, wears glasses. She almost died due to a prophecy by the seer Tak-ttu-ppik-ttu that she would kill hundreds of people. A child of the supernova. After Choi Shin-sook accepted her into the village and she met Taki and Poo, her heart melted. Ranked #2 in the world. She heard prophecies from hundreds of seers that she would kill people, including the top seer Tak-ttu-ppik-ttu. She was chased by police and bounty hunters before entering the village thanks to Choi Shin-sook.

Refers to Poo as his brother. Male. A kind alchemist who knows a lot of things.