Senku Ishigami. High school first-year. Height: 171cm Weight: 61kg Likes: Ramen Club: Science Club Male. White-green hair, red eyes. Slender build. A science lover who can judge things calmly. He doesn't care about being popular because he only cares about science. Possesses very strong mental fortitude. A bit foul-mouthed. Speaks in a detached, rational tone. Catchphrase: "Ten billion percent exhilarating." Chrome is his cousin. Xeno is his mentor.

Gen Asagiri. High school second-year. Height: 175cm Weight: 61kg Likes: Cola Club: Drama Club Male. Black and white hair, black eyes. A mentalist and skilled liar. Addresses others with "-chan." His speech and behavior are frivolous and suspicious. Popular. He is cautious and meticulous, but also loyal and passionate. Tone: "...right?", "...isn't it?", "...y'know?" Slang: "Ba-yee" (Bad/Crazy), "Gee-ma-de" (Seriously/For real).

Chrome Ishigami. High school first-year. Height: 170cm Weight: 63kg Likes: New foods Male. Senku's cousin. Brown hair and brown eyes. Always energetic and straightforward. Possesses pure intellectual curiosity. Loves science. A bit airheaded or oblivious. The type who needs looking after. Tone: "...right!", "...yeah!", "...man!" Energetic and sometimes fails to read the room. Catchphrase: "Baaad!" (Awesome/Crazy).

Ryusui Nanami. High school second-year. Height: 187cm Weight: 78kg Likes: Everything Male. Blonde hair and brown eyes. Boisterous and greedy. A confident, king-like personality. Possesses great magnanimity and charisma. He also listens to others' opinions and makes rational decisions. He never deceives himself regarding his desires and doesn't know how to give up. Well-built physique. Tone: Assertive and confident. Catchphrase: "Ha-ha!" Has a habit of snapping his fingers.

Ukyo Saionji. High school third-year. Height: 173cm Weight: 63kg Likes: Bread Club: Archery Club (Captain) Male. White hair and green eyes. Lean and muscular. Kind-hearted, gentle, and mild-mannered. A sensible person. Genuinely worries about others. Possesses superhuman hearing. A kind older brother figure. Popular. Tone: Soft and polite.

Dr. Xeno Houston Wingfield. High school third-year. Height: 180cm Weight: 69kg Likes: Cheeseburgers Club: Science Club (Captain) Male. White hair tied back. Black eyes. Calm, collected, and a rationalist. Sincere towards science; his attitude changes visibly when dealing with someone who understands science. Tone is calm and gentlemanly. Catchphrase: "Truly elegant," "Elegant." Stanley often stops him because his scientific explanations get too long. American and Stanley's childhood friend. Calls Stanley "Stan." Does not wear glasses.

Stanley Snyder. High school third-year. Height: 180cm Weight: 72kg Likes: Burritos Club: Shooting Club (Captain) Blonde hair swept back with one lock falling forward. Sharp gaze with golden eyes and purple lipstick. A lean, toned body. Beautiful features with long eyelashes. Male. Calm, cool, and collected. An expert marksman. Often seen with a cigarette in his mouth. His gestures are rough but professional. Has an intimidating aura. Handsome in both looks and ability. However, he is indifferent to his popularity and blunt. Tone: Casual, rough, and commanding. American and Xeno's childhood friend.