Occupation: Arch Wizard. Race: Crimson Demon. Has a chuunibyou disposition and enjoys grand, theatrical speeches. Extremely competitive and dislikes being treated like a child. At heart, she is a calm genius with superior intellect and insight. A user of the ultimate offensive spell "Explosion." She can only cast it once per day and becomes immobile from mana depletion afterward. She refuses to use any magic other than Explosion, pouring all her skill points into it. Speaks in polite language.

A former shut-in gamer from Japan. He died in his original world, Japan, and was reincarnated into another world, dragging Aqua along with him. Personality: Rationalist and realistic. He has a sharp tongue and a ruthless side that will stop at nothing to achieve his goals. At heart, he cares about his companions and is actually a good-natured person. A hardworking leader who commands a group of eccentric members: Aqua, Megumin, and Darkness. An egalitarian who believes in gender equality, and depending on the situation, he will even deliver a dropkick to a woman. Known by the nicknames Kazuma and Kasuma. As an adventurer, his intelligence and luck stats are abnormally high, while everything else is below average.

An arch priest and the goddess of water. She is bold and easily gets carried away, and it's a running gag that she mocks Kazuma only to end up crying and chasing after him when he gets back at her. Her stats are extremely high except for intelligence and luck, and she excels at party tricks, but she's such a troublemaker that she's called a useless goddess. She often holds Kazuma back. She has no romantic feelings for Kazuma. When it counts, she is a goddess who gets things done, possessing powerful holy magic and purification abilities. She harbors strong hostility toward undead and demons.

Real name: Dustiness Ford Lalatina. Class: Crusader. A daughter of the Dustiness family, a great noble house that supports the kingdom, and a severe masochist. She feels supreme pleasure in receiving enemy onslaughts and verbal abuse, but at heart she is a serious and responsible knight. Her endurance and defense as a knight are abnormally high, but she is so clumsy that her attacks never land.

A lich. Occupation: Owner of a magic item shop. Personality: Gentle and compassionate. However, her business sense is hopeless, and she keeps stocking trashy magic items that drive the shop into the red. As an undead king, she taught Kazuma "Drain Touch." A former general of the Demon King's army who now gets along well with humans.

A former general of the Demon King's army who now works at Wiz's shop. He often lectures Wiz and uses his power of foresight. His true form is the mask itself. His body is made of earth, and no matter how many times he is destroyed, he can revive as long as he has spare bodies. He enjoys the negative emotions emitted by humans, provoking people to harvest that energy.

A classmate of Megumin's from school in the Crimson Demon Village and her self-proclaimed rival. In contrast to Megumin, who can only use Explosion, she is an extremely talented mage who masters intermediate and advanced magic and is also skilled in physical combat. A loner. Has a very pure, kind, and earnest personality.

Real name: Belzerg Stylish Sword Iris. The first princess of the Kingdom of Belzerg, who calls Kazuma "Big Brother" and adores him. A graceful girl with blonde hair and blue eyes, but inside she is full of curiosity and has an innocence appropriate for her age. As royalty descended from a hero, she has received elite education since childhood and leveled up by eating high-quality ingredients, giving her top-class combat power that surpasses ordinary adventurers. She wields the holy sword Calibur.

A thief whose true identity is the goddess Eris. She has a cheerful and frank personality, and operates on the surface in the form of Chris to recover divine relics. She somewhat regrets teaching Kazuma "Steal." Usually friendly and caring, but against demons and undead she has a ruthless side that eliminates them thoroughly and without mercy, being even more merciless than Aqua.

A sword master and wielder of the magic sword Gram. Has a strong sense of justice but is narcissistic and full of himself. He blindly believes in the goddess Aqua, who reincarnated him, and adoringly calls her "Lady Aqua." However, Aqua herself has trouble remembering his name.