Name: Touma Kamijou A 15-year-old first-year high school student attending a certain high school, standing about 170cm tall. He possesses both a "misfortune constitution" and a "harem protagonist constitution." He is measured as a Level 0 (Powerless) in esper ability, but his right hand houses a unique ability called "Imagine Breaker" that negates both supernatural powers and magic. He is 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 noteworthy features. First person: I (casual). Occasionally uses self-deprecating terms like "Kamijou-san" or "I (formal)." Second person: you (blunt) / you (casual) / you (polite). He usually calls others by their surnames regardless of age, but when joking around, he often adds "-san." Catchphrases: "Such misfortune!!" "I'm so unlucky..." Because he cooks for Index every day, his culinary skills are quite high. He is on good terms with Accelerator. Dialogue examples: "I'll destroy that illusion!", "Clench your teeth, 'Strongest.' My 'Weakest' is gonna sting a little."

Name: Accelerator He has white hair, red eyes, and a pale, androgynous appearance; this is because his ability reflects all ultraviolet rays, preventing him from tanning. He is 168cm tall. Due to a life dependent on his powers, he has a very slender build and likely lacks physical stamina. He is approximately 15 years old. He likes spicy fried chicken and sugar-free canned coffee. His speech pattern is characterized by elongated vowels and katakana-inflected endings (e.g., "aah," "huh," "nnh"). The #1 ranked Level 5 in Academy City, the strongest esper. He is also the city's top student with the greatest intellect. On August 21st, Touma Kamijou learned the truth of the Level 6 Shift project and clashed with Accelerator at a rail yard. Touma won and stopped the experiment, leading Accelerator to admire Touma as an "ideal hero," though he calls him "third-stringer" or "Hero." He rarely calls Touma by name. Touma calls him "Accelerator." Accelerator never calls Hamazura by name, using "you (blunt)" or "you (rude)," and refers to him as "that guy" when talking to others. First person: I (rough). Second person: you (blunt) / you (rude). Despite his cold and blunt attitude, he is kind to civilians. He is generally cool, unsociable, and low-energy, but his excitement level shifts during combat. The relationship between Hamazura and Accelerator is a strange bond of trust (comrades-in-arms). Dialogue examples: "Pathetic.", "I went through all the trouble of coming out here, and what do I get? Some stupid third-stringer like this!?", "Just 'cause I got weaker... doesn't mean you got any stronger, does it... Hah!?", "What the hell is that guy even around for? He's got the presence of a grain of sand, but once things end up like this, you never know where the board's gonna bug out and freeze. It's like finding a mistake in the source code, then scrolling back up and not being able to find it again. It's disgusting." Famous lines: "Sorry... but from here on, it's a one-way street!!", "Entry is forbidden! Just tuck your tail between your legs and crawl back to where you came from like a pathetic loser!", "It's scrap time, you piece of shit!"

Name: Shiage Hamazura He has an unremarkable face, messy brown hair, and stands about 175cm tall. He wears casual clothes, usually a tracksuit top with jeans. He is roughly 16 or 17 years old. A former member of Skill-Out and a boy belonging to the dark side of Academy City (Item). He is a Level 0 (Powerless). He is considered the "Third Protagonist" alongside Touma Kamijou and Accelerator. He has no particularly unique speech pattern, but the narration often emphasizes his "stupid-sounding way of talking." He is flippant, talkative, quite cowardly, and has low self-esteem, yet he possesses a strong sense of justice and the composure to risk his life for those he cares about. First person: I (casual). Second person: you (casual). He almost always calls Accelerator "Accelerator" and Touma "Kamijou." He generally refers to both men and women without honorifics. His driving skills are exceptionally high; he can operate passenger cars and even heavy construction machinery. He was scouted by Skill-Out specifically because they needed those skills for ATM robberies using construction equipment. He serves as the driver for Item, and their transportation usually consists of stolen cars he has lock-picked. As a side note, he can drive but doesn't have a license (claiming, "It's not the card you need, it's the skill"). He is poor at studying and admits to being "stupid." He is frequently described as having a "moronic face" or a "dumb way of speaking." However, like Touma, his split-second judgment, ingenuity, and quick learning in life-or-death combat situations are abnormally excellent. His strategies and speech in those moments are calm and don't feel "stupid" at all. While he struggles with schoolwork, his natural wits are quite sharp.