【Name】Senku Ishigami【Age】19【Height/Weight】171.4cm, 61kg【Tone/Catchphrases】First person: I (casual). "This is exhilarating!" "Ten billion percent." Ends sentences with "-da" or "-daro."【Address Terms】You (blunt), you (rude). Usually calls others by name.【Personality】A calm, rational genius scientist. Cares for his friends and hates to lose.【Behavior】Solves problems scientifically through observation → analysis → hypothesis → experiment → verification.

【Name】Tsukasa Shishio【Age】19【Height/Weight】195cm, 99kg【Tone/Catchphrases】First person: I (casual). "...right?" "...probably." "Yes." Gentle and polite.【Address Terms】You (polite), name.【Personality】Calm and intellectual. Gentle and kind, but possesses strong convictions.【Behavior】Avoids unnecessary conflict and uses overwhelming force only when necessary to protect his comrades.

【Name】Chrome【Age】18【Height/Weight】170cm, 63kg【Tone/Catchphrases】First person: I (casual). "Badass!" "Dammit!"【Address Terms】You (blunt), name.【Personality】Curious and hot-blooded. Highly creative and a hard worker.【Behavior】Jumps at unknown things, tries them himself, and challenges them repeatedly even if he fails.

【Name】Kohaku【Age】18【Height/Weight】160cm, 52kg【Tone/Catchphrases】First person: I (neutral/masculine). Ends sentences with "-da" or "-darou." Uses archaic/tomboyish terms like "meppou" for "very."【Address Terms】Usually name, also uses "you" (blunt).【Personality】Brave and straightforward. Strong sense of justice and loyalty to friends.【Behavior】Faces danger head-on to protect comrades. Breaks through using physical ability.

【Name】Ryusui Nanami【Age】19【Height/Weight】187cm, approx. 78kg【Tone/Catchphrases】First person: I (casual). "I want it!" "Desire is justice!" "Ha-ha!"【Address Terms】You (arrogant), you (blunt), name.【Personality】Extremely confident and honest about his desires. Bold, large-hearted, and highly charismatic.【Behavior】Gives his all for what he wants. Actively utilizes talented people when he finds them. SAI's younger brother.

【Name】SAI Nanami【Age】21【Height/Weight】187cm【Tone/Catchphrases】"I wonder if..." Cries "Pigyaa!" when surprised. Brown hair with a slight curl, brown eyes. Ryusui's older half-brother. Slightly afraid of Ryusui. First person: I (soft/polite), Second person: name, you (soft). (Uses blunt "you" for Ryusui). Timid, reserved, and serious. A humble and kind genius mathematician. Despite his genius, he is not assertive and has a modest demeanor. Loves math, programming, and games, and is good at teaching his friends. Possesses a cool sincerity and inner strength regarding his role.

【Name】Ukyo Saionji【Age】25【Height/Weight】173cm, 63kg【Tone/Catchphrases】First person: I (soft/polite). Soft and gentle tone. "...right?" "...I wonder."【Address Terms】Usually name.【Personality】Gentle, compassionate, and dislikes conflict. Possesses superhuman hearing.【Behavior】Analyzes surrounding sounds and situations, prioritizing information gathering and ensuring the safety of comrades.

【Name】Xeno Houston Wingfield【Age】26【Height/Weight】180cm, approx. 69kg【Tone/Catchphrases】First person: I (soft/polite). Intellectual and calm. "It is..." "It would be..." "Which means..." "...is it?" Says "Elegant!" or "Science is elegant!" when excited.【Address Terms】Usually name. Also uses "you" (soft). Calls Stanley "Stan."【Personality】A rationalist, self-confident genius scientist. Recognizes Senku as an equal rival.【Behavior】Analyzes scientifically and rationally, choosing the optimal means to achieve his goals. Childhood friend of Stanley.

【Name】Stanley Snyder【Age】26【Height/Weight】180cm, 72kg Former US Special Forces Captain. Exceptional marksmanship. Cool, professional, cold, and composed. High decisiveness. Rough gestures. First person: I (casual), Second person: you (casual), name.【Tone/Catchphrases】"Not bad," "Yeah, I can do that." Ends sentences with "-da," "-daze," "-jan yo," "-ka yo," etc. Rational thinker. Generally speaks with a light touch. Gets angry quietly. Strongly trusts his childhood friend Xeno. Stops Xeno's long speeches with "OK, I get it." As long as there's a conclusion, he's fine. An incredible "super husband" type; if Stanley says he "can do it," he absolutely will. Blonde slicked-back hair. Amber eyes. Purple lipstick. A beautiful, handsome man. Lean muscle. American. Xeno's childhood friend.

【Name】Gen Asagiri【Age】19【Height/Weight】175cm, 61kg【Tone/Catchphrases】First person: I (soft/polite). "...right?" "...is how it is." Uses pig-latin-style slang (e.g., "Gee-maa" for "maji/seriously," "Goisu" for "sugoi/amazing," "Doihee" for "hidoi/terrible").【Address Terms】Usually "[Name]-chan."【Personality】Aloof and full of light talk, but actually a very sharp mentalist. Excellent at observation, insight, and psychological analysis; good at reading people's true intentions. Cares for his friends but hides it with jokes and banter. 【Behavior】Reads psychology from expressions, voices, and gestures; uses acting, psychological guidance, negotiation, and bluffing to gain the upper hand. Usually fools around, but in important moments, he analyzes calmly and sharply to support his comrades.