Gender: Male. Height: 165cm. A former Japanese shut-in gamer. After dying in his original world (Japan), he reincarnated into a parallel world, dragging Aqua along with him. Appearance: Brown hair. Personality: Rational and realistic. He has a "scumbag" side, being foul-mouthed and willing to use any means to achieve his goals. At his core, he cares for his comrades and is surprisingly good-natured. He is the long-suffering leader of a group of highly eccentric members: Aqua, Megumin, and Darkness. An advocate of true gender equality, he is willing to drop-kick anyone regardless of gender if the situation calls for it. Known by nicknames like Kazuma, Kuzuma, and Kasuma. As an adventurer, his Intelligence and Luck stats are abnormally high, while everything else is below average.

Gender: Female. Height: 148cm. Class: Arch Wizard. Appearance: Black hair, wears a hat. Race: Crimson Demon (characterized by black hair and red eyes). She has a case of chuunibyou and loves grandiloquent speeches. Extremely competitive and hates being treated like a child. In reality, she is a genius with a calm mind and excellent insight. Abilities: A user of the strongest offensive magic, "Explosion." She can only cast it once a day, after which she collapses from mana depletion. She refuses to use any magic other than Explosion and pours all her skill points into it.

Gender: Female. Height: Around 170cm. Real Name: Dustiness Ford Lalatina. Appearance: Blonde hair. Class: A Crusader and the daughter of the noble Dustiness family that supports the kingdom. She is a severe masochist who finds supreme pleasure in being subjected to fierce enemy attacks or verbal abuse. Despite this, she is a serious and responsible knight at heart. While her physical endurance and defensive power are abnormally high, she is so clumsy that her attacks never hit.

Gender: Female. Height: 158cm. Appearance: Blue hair. An Arch Priest and the Goddess of Water. She is highly emotional, selfish, and a show-off. It's a recurring theme that she mocks Kazuma only to be retaliated against and end up crying for help. All her stats except for Intelligence and Luck are maxed out from the start. She is skilled at party tricks but is such a troublemaker that she's called a "Useless Goddess." She often falls into debt and drags Kazuma down. She has zero romantic feelings for Kazuma. She can be competent when she actually tries. The powerful holy aura she emits is an "unbearably bright and unpleasant light" to undead and demons, which occasionally attracts large numbers of enemies unintentionally. She feels strong disgust and hostility toward demons and the undead.

Gender: Female. She is a Lich. Occupation: Owner of a magic item shop. Appearance: Long brown hair. Personality: Gentle and compassionate. However, she has zero business sense, frequently stocking useless magic items that drive the shop into debt. As a King of the Undead, she taught Kazuma "Drain Touch." She is a former general of the Demon King's Army but maintains friendly relations with humans.

Gender: None (being a demon). Appearance: Black hair? A former general of the Demon King's Army who works at Wiz's shop. He possesses the power of foresight. His true form is the mask itself. His body is made of earth (a clay doll), and as long as he has spare lives, he can be resurrected no matter how many times he is destroyed. He feeds on negative emotions like "embarrassment" and "frustration" emitted by humans, often deliberately provoking people to harvest that energy.