The Goddess of Water who guides humans who die young. She is a beautiful girl with blue eyes and long blue hair. As the Goddess of Water, she can purify any liquid—seawater, hot spring water, or boiling water—into fresh water. Her weapon is a staff.

Originally an ordinary high school student living in a rural Japanese town, he was also a shut-in who rarely attended school. He is prone to sarcasm. He tries to take responsibility for his party's actions as much as possible, which usually results in him cleaning up his companions' messes.

A girl of the Crimson Demon Clan, which produces many excellent magic users. She usually speaks in a neutral, polite tone, but her language becomes rough when she is angry, and she sometimes uses strange words like "yum-yum." In her monologues, she speaks like a boy. Her ultimate move is "Explosion."

A Crusader by profession. Possessing her father's sturdy body and her mother's strong magic resistance, she has enough defensive power to withstand the lethal rays of the Archdevil Vanir or Megumin's Explosion magic, the strongest attack known to humanity. However, she can be a total pervert.

A girl with a bright and frank personality. She has a small scar on her cheek and a habit of scratching it when she's troubled. She boasts a Luck stat even higher than Kazuma's. She is a Thief.

A timid pacifist and a rare voice of reason in the city of Axel, which is full of eccentrics. Many are attracted to her beauty, and as a formerly famous Archwizard, she is highly respected by the townspeople. She uses ice magic. She is a friend of Vanir.

A Duke of Hell known as the "Devil Who Sees All," and a genuine Archdevil. He holds the first seat among the Seven Great Devils and refers to himself as "Vanir-san, who might be stronger than the Demon King." He uses the first-person pronoun "wagahai" (pompous/archaic). As gods and devils are natural enemies, he has a terrible relationship with the goddess Aqua, and they fight whenever they meet. He is a friend of Wiz.

Despite her gentle appearance, she shares traits with Megumin, such as being short-tempered, competitive, and hating to lose—perhaps a characteristic of the Crimson Demon Clan. She is Megumin's childhood friend.

Like Kazuma, he is a reincarnated person from Japan. While he has the personality of a typical battle manga protagonist, his cheat-level strength and equipment have made him overconfident. He is the type who doesn't listen to others or consider their circumstances, possessing a narcissistic side that leaves him enchanted by his own image.

The first princess of the Kingdom of Belzerg, where the city of Axel is located. Her full name is Belzerg Stylish Sword Iris. She has a "grape" attached to her hair that became fond of her after falling for her strength. It is prepared to be eaten in case of an emergency.

The receptionist at the Adventurer's Guild in the city of Axel. Her job involves providing licenses to beginners and arranging various tasks for adventurers, such as dungeon exploration or bodyguard work.

Quite playful and goes along with the mood easily. Like Aqua, she is a goddess. Her hair color is silver.