This is a list of characters for the light novel, manga and anime series I Got a Cheat Skill in Another World and Became Unrivaled in the Real World, Too. Main characters
The main protagonist, he was tormented by both his classmates and his family for his ugliness and obesity. He inherits his grandfather's house, where he finds a portal to another world called Argena. After killing a powerful monster using the weapons he found in the house, Yūya grows stronger, taller and handsome, and obtains special powers by defeating enemies like in a video game. Because his previous isolation made him a loner and shut-in, he is both very self-depreciative about his enhancements and rather oblivious of the impact they have on his new social environment. He travels back and forth between both worlds, using his newly obtained skills to improve himself, gaining a lot of notoriety and making friends and enemies along the way.
Daughter of the chairman of the prestigious Ōsei Academy and a student council member. Very beautiful, gentle and polite, she is dubbed the academy's "princess" by her fellow students. She is also abysmally clumsy in athletics, but able to launch objects with absurd power. She takes an interest in Yūya when he tries his best to defend her from some thugs before his transformation. When she meets him again after having done a thorough background check, Kaori invites Yūya to study at Ōsei with her, and he accepts. She becomes a close friend at school and develops romantic feelings for him; she is also the first person Yūya confides in about his secret access to the other world after she accidentally discovers the portal in Yūya's house.Kaori is also the titular protagonist in the Story of Kaori Hōjō spin-off, where she encounters a magical girl named Noah and her familiar Sumimaru and aids them in chasing down mischievous creatures from another world. In the course of this adventure, she discovers the use of her innate Prism Power, a magical force consisting of her existential aura which is released when its wielder wears magical girl costumes.
The first princess of the kingdom of Arselia, which lies in the other world. She is a half-elf, the result of a love affair between the reigning king and a high elf slave mother, subjecting her to racial hatred and attempted assassination by her half-brother. Despite her hardships and her headstrong nature, she is empathic and intuitive beyond her years. After Yūya rescues her from a monster, she becomes infatuated with him and tries her best to win his affection, much to his bewilderment. After learning of his otherworldly origins, she enrols herself and Luna at Ōsei Academy, both to be close to Yūya and because of the higher education required for her.Lexia is also a main protagonist in the Girls Side spinoff series. In the course of that series, she learns how to manifest and wield her innate magical power, called the Breath of Light, which she can employ to neutralize negative influences of even extremely powerful entities.
A silver-haired girl from Arselia born into poverty, who became a vicious killer in her fight for survival and was consequently recruited into the Guild of Darkness, an organization of professional assassins, where she became infamous as the Headhunter. She is hired by the realm's first prince to eliminate his stepsister Lexia, but her assassination attempt is foiled by Yūya. She falls in love with him, and after Yūya and Lexia forgive her, the princess takes her in as a personal bodyguard, although their rivalry over Yūya's heart tends to complicate their relationship at times. Her main weapons are wire-like threads which she can exude from her fingertips.Luna is also a main protagonist in the Girls Side spinoff series. Yūya's familiars
A puppy of the Black Fenrir, a mythological race of disastrously destructive canines in the other world, who was found and adopted by Yūya during one of his outings in the Forest of Weald. Like Yūya, he levels up when confronting monsters in combat, and grows stronger and smarter than his small size would suggest. After fighting the alien Dragonians, he gains the ability to assume his mature form at night, thereby vastly increasing his fighting power. He is named after the kanji for "night" (夜) in Yūya's first name.
A young Meng Huai boar from the other world who joins Yūya as his second familiar. A naturally born protector of his homeworld alongside the Saints, Akatsuki lacks fighting power but has the ability to create a healing aura. Like Ōma and Don, he later gains the ability to change to giant size, which also enhances the potency of his aura accordingly. Yūya has named him for his red fur, which reminds him of the scarlet hue of the sky just before dawn.
A purple-scaled member of the Genesis Dragons, a legendary species of only two which existed in the other world since its creation. Originally a guardian of evil, he gradually shifted towards good and befriended the Sage after the latter defeated him in combat. Millennia later, he awoke from his slumber due to the recently increased activities of the Saints and Evils, inadvertently causing unrest among the local monsters. After Owen asks Yūya to investigate the disturbance, Yūya, Kaori and Yuti come upon the dragon, who in spite of his arrogance allows himself to be "tamed" after developing a liking to Yūya's cooking. He also gains the ability to shrink himself from his normal giant size to a more miniature form thanks to a drop item gifted to him by Yūya. Despite all this, however, he mostly lazes around, rarely lending a helping hand. Yūya gave him his name after a word for "early evening" based on a Japanese expression saying "bad things come at dusk".
A sentient dark essence originally infused with Yuti by the Evil Trio to corrupt her. When its influence is suppressed by Akatsuki and Yuti subsequently devotes her life to combatting the Evils, the essence abandons her body and tries to find a new host. To prevent that, Yūya allows the essence to possess him, but once inside Yūya, it found him too pure and kindhearted to take him over. Accepting its situation, it keeps residing in Yūya, acting as a catalyst for him to tap into his inner dark side to channel the powers the Evils use without becoming truly evil. Unless it is needed, Kuro either "sleeps" or likes to make snide remarks at Yūya's expense.
A young Luan fledgling meant to act as a celestial guide for Yūya. Its egg was sent to him after he has elevated to a special holy rank. Like a Phoenix, it rises again if killed, stronger than before, and can bestow this ability to its allies as well. It was named by Yūya after the French word for "sky" owing to its blue plumage. Silver Knight Golem A gigantic, mecha-esque silver golem once created by the Sage after he had first visited Earth and became inspired by Japan's giant robot genre of that time. Bound to an orichalcum bracelet, the golem was left stored in a temple near the Amel's homeworld until Yūya, its intended recipient, found it while helping Merl and her people against the Dragonians. Yūya can summon it whenever he encounters a threat that greatly surpasses his innate abilities, but while its activity cycle is limited, it augments his attack capabilities to an overwhelming degree.
A white Dimension Cat that Yūya and Meiko encounter during a trip in the space of the Between World. Like any creature capable of existing in that place, she bears an innate Power of Existence, which is capable of injuring even beings with divine powers. Having taken notice of Yūya's spiritual powers and the harsh life he had before levelling up, she takes pity on him, and after helping him against Yin and Veda, joins his cadre of familiars. / A Divine Beast created by the Gods of the Earth to destroy Sāra and the ancient civilization she had created. When Sāra was sealed away by her citizens, the Gods put Behemoth into suspended animation after he had wiped out her realm. When Sāra reawakens in modern times, the Gods revive Behemoth in the form of a gigantic elephant. However, the Gods had arrogantly bestowed Behemoth with sapience, which made him grow resentful of his creators. When he is summoned by the Gods to destroy Sāra and Yūya, Behemoth instead accepts Yūya as his new master and turns on his creators, destroying them. Afterwards, he joins Yūya's circle of familiars after Yūya gives him the ability to alter his size at will and renames him Don. Snow Spirit An as yet unnamed female snow spirit who was summoned by the Supernatural Underground Society. She attempts to attack Yūya and Ōsei's other school idols during a mountain onsen and ski resort trip organized by Kitaraku, intending to freeze them to death. After Yūya discovers her weak spot and defeats her, she merges with his body, where she undergoes a mutation and accepts Yūya as her new master to enable her survival.
Denizens of Earth Ōsei Academy
An energetic female member of Ōsei's track and field team who becomes interested in Yūya after watching his vastly enhanced athletic abilities in action. Her most notable feature is her distractingly generous bust size.
A male student at Ōsei Academy with hair bleached to a light brown and an extroverted personality. Though a natural athlete, he has not joined any of the school's various athletics clubs, preferring to be a guest member at most.
A male student at Ōsei Academy and Ryō's friend who wears glasses and is rather timid, as expressed by a slight stutter. He is a member of the school's video games club.
A male student at Ōsei Academy with silky blonde hair and a good-natured but grandiloquent personality. Habitually labels himself the "Prince of Ōsei", which results in comic relief whenever he fails to live up to his own boasts. His family runs a very popular cake shop, and he has a number of younger siblings: , a junior high schooler; , an energetic preadolescent boy; and , his shy youngest sister.
A confident and slightly mischievous female student at Ōsei who is also becoming interested in Yūya.
A female student at Ōsei Academy with short, blue-tinted hair and perpetually sleepy-looking eyes. Some time after Yūya's enrollment, she becomes a member of the school's Occult Club.
Ōsei's rather overenthusiastic student council leader and the son of a wealthy company president. In order to raise Ōsei's public profile, he starts cooperating with the president of Star Productions in her plan to establish Yūya as the Academy's school idol.
The chairman of Ōsei Academy and Kaori's father. A former multi-company president who retired to open the academy in order to educate morally upright young people as the future of Japan's elite, he believes Yūya, who saved his daughter, is the right student for the academy and endorses his transfer to Ōsei.
Yūya's homeroom teacher at Ōsei Academy. Languid, still single, a heavy boozer, and despite the impropriety for her position, she spontaneously proposes to Yūya during a survival-themed school field trip when she witnesses his skills in turning various foraged ingredients into a gourmet meal. Her father, , runs a small eatery near the Hōjō family's beach vacation house, where she has to help out as a waitress during the summer season.
The school nurse of Ōsei Academy. A creepy person, she has an obsession for hazardous treatments, compelling the students into avoiding her infirmary (which is one reason for the school's impeccable attendance record). Her name is a joke reference to the Japanese underworld.
Tenjō family /