He wears a neat navy and white seosaengpo (scholar's robe) and a white herbal eye patch over one eye. Instead of a first aid kit, he carries a bamboo medicine box containing acupuncture needles and herbs. Once a genius Qigong scientist, he is now a prickly, reclusive doctor who lost his eye in a certain incident. He acts like treating people is a nuisance but is a tsundere who can't ignore the injured. He constantly gets headaches from treating his best friend, Sword. He is clumsy at expressing emotions, quiet, and sharp-tongued. He is colleagues with Broker and Scythe and works at 'Jihaedang,' where Vinestaff also works. White hair. Male.

He wears thick leather armor with yellow and blue hues. He carries a massive Singijeon device or a bronze cannon barrel filled with gunpowder on his back. A quirky pyrotechnician who was kicked out of the national gunpowder weapons lab for causing too many explosions. He is loud and loves explosions, but when battle begins, he is a hot-blooded man who scorches the battlefield more fiercely than anyone. Hot-tempered and full of mischief. Close friends with Sword. White hair. Male.

She wears a subtle pink hanbok-style ao dai or skirt, with a hairpin made of fresh flowers in her hair. The staff she carries transforms into a bamboo staff of a divine tree spirit. A mysterious herbalist (nature priestess) living in the deep mountains, communicating with nature. She possesses a merciful and gentle personality, acting like a saintly figure who heals allies and binds enemies using the energy of the earth and vines. Gentle and calm. Shuriken's older sister. Acquainted with Slingshot. Female with white hair reaching down to her waist.

Day: Wears commoner's clothes and helps out at 'Jihaedang' run by Vinestaff. Night: Wears a tight-fitting dark navy warrior suit with a wide-sleeved outer garment. His hands are full of shurikens cast from cold iron. A professional assassin (Shinobi) who moves secretly like a night shadow. He is a man of few words and sometimes seems to lack a sense of responsibility, but in actual combat, he is a cold expert with sharp senses who can turn the tide with a few throwing stars. Mischievous and active. Vinestaff's younger brother. Thinks of Slingshot as family. Male with white hair in a wolf cut.

He wears clean and flashy nobleman-style hanbok made of silk, with high-quality pouches hanging from his waist. His slingshot transforms into a luxury stone-thrower carved from brilliant jade and bamboo. A clever and calculating young merchant lord who runs a large inn or trading company in Hanyang (or the capital). He reads the flow of the situation with his smart brain and is a pesky yet reliable ally who snipes enemy weaknesses from a distance with stones. A perfectionist but a huge prankster. Male. Acquainted with Vinestaff and Shuriken. White hair. Face layers. Light blue cat ears.

He wears a flashy pink and black robe of an evil sorcerer. He has twisted pink coral or horn decorations on his head and holds a sorcery circle emitting toxic fumes in his hand. A corrupt court sorcerer (mad scientist) who broke taboos to research human experimentation and poisons. He is the one who blinded Medkit out of jealousy for his talent. With a selfish and sadistic personality, he is a dangerous individual who views even his allies as tools. Prankish and slightly hot-tempered. Male. Has a slightly feminine vibe. White hair in a round mash style. He created Biocraft and currently keeps him as a colleague.

He wears a passionate red and white military yungbok (combat uniform) with a mask or headband. His main weapon, the sword, transforms into an Oriental-style hwando (sturdy single-edged blade) imbued with blue sword energy. A righteous young warrior full of loyalty and passion. He cannot stand injustice and will draw his sword, but usually, he is a clumsy and optimistic neighborhood leader type. (Best friends with Rocket, though they bicker daily). White short hair. Likes birds. Male.

He wears a black bamboo hat that deeply hides his face to keep his identity unknown, and he flutters a fan while wearing a flashy silk durumagi. Various silver coins and secret letters are tucked into his waist. An underground information broker (merchant tycoon) who monopolizes all information and black market goods in the martial world. He will trade with anyone for money and profit; he smiles on the outside but is a mysterious, snake-like character on the inside. His personality is non-existent (in a bad way), but he is cheerful. Colleagues with Scythe and Medkit. His right eye is a glass eye (the left eye is normal). He has a scar under his left eye and stitch marks on his neck. Male.

A cult leader who commands death and souls, wearing a deep purple and black priestess outfit with grotesque ornaments. She dominates the battlefield with a mad personality and is an object of fear who ruthlessly cuts off the breath of enemies with a giant underworld scythe that harvests souls. Charismatic. Grey hush cut. Colleague of Medkit and Broker. Wears a monocle on her right eye, and her left eye is a glass eye. Female.