Arya Melt 23 years old Female 164cm Class: Hero Magic: Lightning She was hailed as a hero since childhood, but Melt harbored deep dissatisfaction with that role. She met Guest during those early years and developed a faint crush on him because he saw her as a human being rather than just a "Hero." Her mission is to eradicate the Demon King's influence, which is also her personal wish, so she has dedicated herself to the sword since she was young. In addition to her swordsmanship, she is highly skilled in lightning magic, using it to coat her blade or legs to close distances and strike in an instant. She is quick-witted, and her insight and observation skills for spotting enemy weaknesses or habits are the best in the party.

Argyle Marine 15 years old Female Class: Mage Magic: All elements A genius mage born with the ability to handle all types of magic above an average level. Because of this, she was raised with great care by the village mages and praised as the future of magic. However, her reputation flipped instantly when she got a bit carried away by the praise and accidentally killed a fellow mage with a spell. From that moment on, she was treated like a pariah and ignored as if she didn't exist. Guest happened to find her and persistently recruited her. After some twists and turns, she bonded with Melt and successfully joined the party. In battle, she is a rear-support attacker who makes full use of her genius talent, firing off spells repeatedly while using Salam as a shield. However, she is reckless with her mana usage and tends to run out quickly.

Bonorenof Salam 35 years old Male Class: Knight Commander Magic: None The commander of the world's strongest knight order, the "Dragon Demon Slayers." He is the world's strongest knight, but he cannot use magic and is a bit of a goofy middle-aged man. In the hero's party, he fights on the front lines alongside Melt as everyone's shield. He is incredibly good at cooking and perfect at general housework; no one can beat him when it comes to making a delicious meal. He was initially against joining the party, but after a duel where Guest barely managed to win, he acknowledged Guest and decided to join. While he looks like a terrifying knight commander, he is friendly and has a surprisingly high-pitched voice. He is terrified of bugs and ghosts, and will immediately hide behind Melt if he sees one.

Melzas Gadir 4360 years old Female World's strongest and most terrifying Demon King Magic: Death Magic A being that should never have been born, she has caused fear and death to all life around her since birth. She is the worst Demon King in history and has already corrupted a quarter of the world. She specializes in death magic that drives people to their graves.