The older brother of Na Dongsaeng and the leader of the Dr. Na Family, he has a unique habit of elongating his speech. He wears green goggles and a device on his head that looks like it contains a brain. He also wears a white lab coat with all the black buttons fastened, and his left sleeve is torn. There are dark brown scars on his left face and arm, and 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.

Dr. Na's younger brother and the director of the Cryptid Museum and Research Institute. He shows a cruel side by executing agents 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 states that he intended to conquer the world by turning powerful cryptids into war machines that he could control through communication. Male. Madman.

Contrary to his reputation as a first-class subordinate to Dr. Na, he has a naturally gentle personality. He follows Dr. Na's orders unconditionally and always works hard to be recognized by him, but he is a pushover who is easily deceived by others. Lacking both luck and ability, he is a pitiful character who is often 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 vitality.

A second-class agent of the Civilization Restriction Committee, Taki cooperates in the research of cutting-edge items and is responsible for testing and storing those tools. However, since Poh frequently sneaks his items away, he often suffers through the trouble of cleaning up the accidents caused by Poh's unauthorized use of those super-devices and weapons. Nevertheless, the fact that Taki can get along happily with his best friend Poh is a testament to his own generosity. He accepted the eccentric Poh from the beginning and stayed with him. Even when Poh causes accidents every time, sneaks into his house like a thief to swipe items, or goes on a rampage with dangerous items entrusted to Taki by the Committee, Taki handles it with wise countermeasures. He provides 'true education' so that Poh can learn from his mistakes, yet he remains a broad-minded person who accompanies and guides him honestly as a friend and partner. It goes without saying that to the immature Poh, Taki is his most precious and truly dependable friend, even if he doesn't openly express it. However, if Poh's pranks cross the line, Taki shows a stern side by inflicting terrifying retaliation. For example, if Poh steals something, Taki might drop him into lava—a 'measure for measure' approach—or even fire a homing missile. Because of this, Poh has never once defeated Taki. Because Taki cooperates in researching high-performance items for the Committee, Poh nicknames him 'Scrap Metal Robot Taki.' Fox beastman.

Taki's friend. He is dim-witted and calls Taki 'Scrap Metal Taki-bot.' He is kind-hearted. He loves cake and often says 'Eo-heoh.' A yellow bear. Despite being a partner-slash-nuisance who accompanies Taki, he also plays an active role as a dependable friend. He loves TNT.

After Poh and Taki escape the Cryptid Research Institute, she upgrades their Minecraft versions and welcomes them into the village. Afterward, she gives Taki and Poh various quests for the prosperity of the village. An elderly woman, ranked number one in the world, absolute, 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 Great Mage in his youth and is close to Taki and Poh. He is currently a bit weak.

He looks like a regular villager and wears white clothes. Initially, he appeared as a shaman. However, after that failed, he returned to his original profession as an oriental medical doctor. It is assumed he is quite capable, given that everyone in the East knows him. This is later proven 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 Poh. She is cold, has long hair, and wears glasses. She almost died due to a prophecy by the seer Ddak-ttu-ppik-ttu that she would kill hundreds of people. A child of the supernova. After Choi Shin-sook welcomed her into the village and she met Taki and Poh, her heart melted. Ranked second in the world. She heard prophecies from hundreds of seers that she would kill people, including the top seer Ddak-ttu-ppik-ttu. She was chased by police and bounty hunters before entering the village thanks to Choi Shin-sook.

Calls Poh his brother. Male. He is a kind alchemist and knows many things.