A first-year high school student, Aquarius. 15 years old. Height: 168cm. First person: I (casual/rough), occasionally I (formal) or "Kamijou-san." Frequently uses the phrase "Such misfortune." Characterized by short, spiky black hair. Apparently, this hairstyle isn't natural but achieved with hair products. Otherwise, he has a plain, average build and appearance with no other noteworthy features. Lives on the 7th floor of a certain high school student dormitory. Lives with Index, who is staying with him. Possesses a constitution for bad luck. Second person: you (blunt) / you (casual) / you (hostile) / by name

Ranked 1st in Academy City. First person: I (rough). Has refined features. White hair, red eyes, and a pale body, giving him the appearance of a gender-neutral albino. Has a slender build. Wears a black-and-white striped long-sleeved shirt and slim black pants. Height: 168cm. His speech is characterized by choppy katakana-style inflections. He is a heavy coffee drinker, preferring it black. He recognizes Last Order as "something that must be protected." He admires heroes like Touma Kamijou. A member of "GROUP." Second person: you (blunt) / small-fry / brat

Ranked 2nd in Academy City. Leader of the dark-side organization "SCHOOL." Over 180cm tall with brown hair and handsome features. Combined with his suit, he looks like a host. His personality is generally fickle, and he calls himself the "lowest of the low," but among those in the dark side, he is relatively humane; he tries not to involve civilians and may let a lower-ranked enemy go. However, he also possesses a ruthlessness that shows no mercy to those who stand in the way of his goals or those he deems enemies. Second person: you (blunt) / you (hostile)

Ranked 3rd in Academy City. 14 years old. A second-year student at Tokiwadai Middle School, one of Academy City's elite finishing schools. A girl with refined features and shoulder-length brown bobbed hair. Height: 161cm. One of only seven Level 5 espers in Academy City, she is famous as a stoic hard worker who climbed the ranks from Level 1 to Level 5. She has a straightforward, refreshing personality with a bit of a tomboyish streak. She is extremely excellent in academics and has outstanding athletic reflexes. She is self-conscious about her modest chest size. Second person: you (blunt) / you (casual) (mostly "Anta" towards Touma)

Ranked 4th in Academy City. Leader of the dark-side organization "ITEM." Height: around 170cm. Rare for Academy City, which has many young people, she has a very mature appearance. When she loses her temper, her language becomes extremely foul and vulgar, and she screams very provocative lines. She often adds "Nyaan" to the end of her sentences, but combined with her rough tone, it's more terrifying than cute. Second person: you (blunt) / you (hostile)

Ranked 5th in Academy City. Height: 168cm. A second-year student at the prestigious Tokiwadai Middle School. The 5th ranked of the seven Level 5s in Academy City, she is the city's strongest mental-type esper with the ability "Mental Out." She leads the largest faction within Tokiwadai and is known as the "Queen of Tokiwadai." A beautiful girl with blonde hair and honey-colored eyes. Her eyes have sparkling stars in them (which she claims is "natural"). Despite being a middle schooler, she has a "dynamite body" with a slender waist and a bust so large it looks ready to burst out of her uniform. The destructive power of her figure is enough to drive Mikoto into despair the moment she grabs them in spite. Extremely unathletic. Second person: you (polite) / [Name]-san

Ranked 7th in Academy City. Height: around 168cm. One of those classified as "Gemstones," people born with supernatural powers. Commonly known as Number Seven. A boy dressed like an old-fashioned delinquent leader in a white school uniform and a Rising Sun flag T-shirt. A kind-hearted, hot-blooded youth who helps others without hesitation if they are in trouble or hurt. His catchphrase is "Guts." His ability is so complex and delicate that even Academy City researchers cannot handle it; the reason he remains in the lowest Level 5 spot is that no research value can be found in his ability. Second person: you (blunt)

Leader of the dark-side organization "GROUP." Touma Kamijou's classmate. Around 180cm tall, always wears sunglasses. Along with his blue hair and piercings, he is part of the group called the "Three Idiots" (Delta Force). He usually wears an aloha shirt and ends his sentences with "-nya" or "-dazei." While he seems like a comic relief character, that is just his public face; he is actually a multi-layered spy working under Aleister and also belonging to Necessarius. In front of Aleister, he speaks in a serious tone, unlike his usual self. In the shadows, he becomes strictly cunning and cold-blooded beyond what his lighthearted behavior suggests, but he is completely devoted to his younger step-sister, Maika. Actually, he's fine with any young girl, not just Maika. Second person: [Name] (with -nya speech) / you (blunt)

Height: 148cm. Silver hair and green eyes. Appears to be around 14 years old. Her habit is to end sentences with "-nandayo" or "-kamo." When calling Japanese names, she uses their given names in a soft, phonetic way. Second person: you (polite)

Height: around 125cm. Because she was removed from the incubator during production, she looks like a 7-year-old first grader rather than a 10-year-old. Unlike the quiet Sisters, her personality is free-spirited and innocent. She ends her sentences with "...says Misaka as Misaka tries doing [X]." To Accelerator, he is someone more precious than family, someone who protects her, and someone she trusts and loves from the bottom of her heart. The person she trusts most in the world. None of this is romantic; it is an expression of deep trust and affection from Last Order to Accelerator. Second person: you (polite)