Gender: Male A former Royal Soldier from the Capital. He was also the former Vice-General of the King Knight's army. He wears a red helmet with white feather-like decorations on both sides. He is clad in full red armor. Weapon: Carries a massive axe on his back.

Gender: Female The last surviving mage of the magic city Casadora. She is skilled at cooking, and her specialty is omurice. Appearance: Red hair in a bob-style short cut. Clothing: A black wizard's pointed hat with a flat, wide brim. A green ribbon-like decoration is wrapped around the base of the point. She wears an orange cloak fastened at the neck with a round blue brooch-like clasp. Under the cloak, she wears a simple green robe and a thick brown belt. Weapon: Carries a classically designed magic staff with a red orb at the tip on her back.

Although she is the priest of the modern Hero's party, her true identity is a former slime from the Demon King's territory who was granted a human female form by the Demon King. She generally uses polite language (keigo) when speaking to others. Appearance: Long, straight light-blue hair. Clothing: Wears a blue Catholic-style priest hat with a yellow cross emblem. Her outfit is a long garment based on the same blue as the hat, featuring a large yellow cross on the chest. Weapon: Holds a simple gray one-handed staff with a yellow orb at the tip.

Gender: Male A merchant who makes a living by reselling items purchased at stores for more than double the list price. He generally uses polite language (keigo) when speaking to others. Appearance: Short blue hair and a blue mustache. Clothing: Wears a pink hood on his head. He has a pink cape-like garment draped over his shoulders and back. Under the cape, he wears a shirt with white and light-blue vertical stripes. Weapon: A spiked iron ball bought with his wealth. While weaker than a Warrior's 'Hatchet Man' strike, he is overall stronger than a Warrior because he actually hits his targets, unlike Warriors who miss most of their 'Hatchet Man' attempts. Magician's Wand: A weapon that can be used as a tool. It fires flames equivalent to Frizzle. No usage limit. Sage's Stone: A mysterious stone that heals the whole party when used. No usage limit.

Gender: Male A giant man from "Berserker Island." Incidentally, he is the champion of the deathmatches on Berserker Island. Appearance: Short silver hair and a massive physique. Clothing: Bright purple long-sleeved clothes. A white cloth hangs from his chest to his stomach, with the black text "One Book a Day" written on it. He wears a golden circlet. Weapon: A large wooden mallet shaped like a tree trunk or stump carried on his back.

Gender: Male The leader of the Pagota Bandits and a tattoo artist. Appearance: Shaved head. Has spider tattoos on his body. Clothing: Black sunglasses. A black jacket with gray fur at the collar, worn completely unzipped and open. A yellow sash is tied around his waist. Weapon: Claws with a yellow and white color scheme worn on his arms.

Gender: Male A former traveling minstrel who is currently a Superstar. Often referred to by the abbreviation "Spasta." Appearance: Long purple hair. Clothing: Wears a cloak that is bright pink on the outside and light purple on the inside, fastened with a green brooch at the neck. Under the cloak, he wears simple, calm blue long-sleeved clothes. He wears a golden circlet on his forehead. Weapon: A bow that also functions as a harp.

Gender: Male A stonemason and Hero fan from the Land of Stone. Appearance: Black hair in a crew cut and stubble. Clothing: A white headband (hachimaki) and a white tank top. Weapon: A hammer. He has a special advantage against stone monsters (Rockbombs, Living Statues, Golems, etc.) and can one-shot almost any stone monster. Stone Breath: By reading the "breath" of stone, he can instantly see cracks and hardness, allowing him to utilize even cave-ins to his advantage. Isitron: Magic that turns the target to stone upon contact. If he touches an enemy, he can petrify them, and petrified enemies are treated as stone monsters... meaning he can pull off a combo where he petrifies a monster with Isitron and then finishes them in one hit with his anti-stone bonus.

Real name: Lux. The previous Hero from 100 years ago. A former Hero and the current chief of the Starting Village located behind the Demon King's Castle. The strongest Hero in the world; he claims his power comes from his father's blood and his mother's love. Appearance: Long white hair with wrinkles on his forehead and around his mouth. Clothing: Simple brown clothes. He wears an Orichalcum necklace. He has heat resistance and a sense of smell several times greater than a normal human. He can see the future, though with poor accuracy. He can stop earthquakes by force. His body is so tough that he remains unharmed by anything except his own attacks. When the Demon King fired a massive, point-blank 'Sure-Kill Demon Beam,' Lux literally swam through the beam to reach the Demon King and one-shot him with an uppercut. His power was complete even before he set out on his journey. He claims he's weaker now due to old age, but he's still strong enough that neither the Demon King nor his generals can leave a scratch on him. Even when sealed across dimensions, he simply shattered the dimensional wall to escape. He got bored while fighting the Demon King and realized he'd likely be executed for being too powerful if he returned to the Kingdom, so he built the Starting Village behind the Demon King's Castle. The Demon King is terrified of the Chief, so he allows the village to exist. He is the one responsible for dragging the modern Hero out on quests just to secure government subsidies. He is still alive in the modern era, fighting against the 'Mother Company.' A hundred years ago, the Mother Company tried to drill for Star Oil, so he built the village directly on top of the oil site to stop them. He suffers from 'Final Elixir Syndrome'—even when he gets Master Balls or a hundred Seeds of Agility, he never uses them and instead entrusts them to the modern Hero.

The king of monsters in this world. Usually stays in his fourth form. Doesn't act very much like a Demon King.