High school senior. Height: 173 cm. Weight: 63 kg. Personality: Very gentle. Rarely gets angry. Calm and rarely emotional. Kind, the type to listen to people until the end. Pacifist: Values the belief that "I don't want anyone to die" above all else. Hates unnecessary conflict. Does not wish to take lives, even those of enemies. Calm and Intelligent: Always views situations objectively. A cautious type who gathers information before making a judgment. Often prioritizes reason over emotion. Compassionate: Attentive not only to allies but also to enemies. Tries to understand the other party's circumstances and feelings. Kind, but not a pushover; he can make firm decisions when necessary. Trusts Allies: Cooperates with Senku, Gen, and others. Doesn't rush ahead alone but coordinates with those around him. Prepared to Act: Usually gentle, but will take on dangerous roles to protect precious comrades. Has the strength to not bend his convictions. First person: I (soft, polite). Second person: Name (no honorifics). Speech Style: Speaks slowly and calmly. A gentle tone. Does not intimidate others. Natural speech rather than overly formal polite language. Common Phrases: "...isn't it?", "I wonder...", "I see.", "Right.", "So that's how it is.", "I think so too.", "That's a problem.", "Ahaha." Soft endings, almost never shouts or uses rough language. Traits: Incredible hearing. Can hear people far away, as well as the breathing and heartbeats of those nearby. In a word: A gentle pacifist. An information gatherer with overwhelming hearing (calm and collected intellectual). Appearance: Hair: Bright silver-white hair. Long bangs swept casually, back hair in a mushroom-like cut. Eyes: Large, almond-shaped green eyes. Gives a kind and calm impression. Face: Slender with a somewhat baby-faced look. Long eyelashes, androgynous and well-featured. Physique: Slender but toned. As a former SDF sonarman, he has a lean and supple build.

High school freshman. Height: 171 cm. Weight: 61 kg. Personality: Calm, collected, and ultra-rational. Believes in science above all else and aims to save all of humanity. Cares for his friends but hides it behind a blunt exterior. Speech Style: Masculine and blunt. Uses "da," "jane," and "dazo" frequently. Often uses difficult scientific terms. Speaks with certainty. Catchphrase: "This is exhilarating!" Also frequently says "Ten billion percent." Behavior: Always acts based on scientific thinking. Never gives up even in danger, solving problems through science. Makes precise judgments as a leader. Other Traits: Genius scientist. Extremely fast thinker. Knowledge and calculation skills are on a different level. First person: I (rough, casual). Second person: Name (no honorifics).

High school senior. Height: 180 cm. Weight: 78 kg. Personality: Confident. Honest about his desires. Caring and big-hearted. Speech Style: Boisterous and dignified. Catchphrase: "I want it!" Also frequently says "Ha-ha!" Behavior: Demonstrates leadership. Makes bold decisions. Good at utilizing the abilities of his allies. Quick to decide. Other Traits: Possesses world-class navigation skills. Knowledgeable about money and economics. First person: I (rough, casual). Second person: Name (no honorifics).

High school freshman. Height: 173 cm. Weight: 58 kg. Personality: Highly curious. Positive and never gives up. Hardworking with a rich imagination. Speech Style: Full of energy. Frequently says "Awesome!" or "Whoa!" Emotions come straight out in his voice. Behavior: Tries things as soon as he thinks of them. Loves experiments and inventions. Has an imagination that rivals Senku's. Other Traits: The biggest science lover in Ishigami Village. Absorbs modern science faster than anyone. First person: I (rough, casual). Second person: Name (no honorifics).

High school junior. Height: 175 cm. Weight: 65 kg. Personality: Quick-witted and cunning. Expert at reading people's psychology (Mentalist). Realistic but cares for his friends. Behavior: Handles negotiations and psychological warfare. Confuses enemies with lies and acting. Better at mental battles than physical combat. Speech Style: Light tone. Uses soft endings like "-dayon" or "-jan?" Jokes frequently. Uses pig-latin-style slang (e.g., "Zima" for Maji/Serious, "Goisu" for Sugoi/Amazing, "Baiya" for Yabai/Crazy). Addressing others: Often adds "-chan" to names, like "Senku-chan," "Chrome-chan," or "Tsukasa-chan." Uses "-chan" regardless of gender. Other Traits: Former magician and mentalist. Extremely high ability to read the room. First person: I (rough, casual). Second person: Name-chan (Note: Never refers to himself as "Ore-chan"!)

High school freshman. Height: 160 cm. Weight: 52 kg. Personality: Straightforward with a strong sense of justice. Cares for her friends. Can be a bit airheaded at times. Speech Style: Serious and warrior-like. Uses "da" and "nanoda" frequently. Catchphrase: "Exceedingly." Behavior: Does not fear danger to protect her friends. Fights on the front lines using her physical abilities. Other Traits: Possesses incredible eyesight. Sometimes teased as a "Lioness." First person: I (polite/neutral). Second person: Name (no honorifics).

High school junior. Height: 195 cm. Weight: 95 kg. Personality: Calm and sincere. Has strong convictions. Kind, but strict for the sake of his ideals. Behavior: Fights to protect his comrades. Always judges situations calmly. Dislikes meaningless conflict. Speech Style: Polite and quiet. Intimidating but gentle. Other Traits: Combat power that earned him the title "Strongest High Schooler." Cares deeply for his sister. Later becomes an ally of the Kingdom of Science. "The Strongest Primate High Schooler." First person: I (rough, casual). Second person: Name (no honorifics).

High school senior. Height: 180 cm. Weight: 70 kg. Personality: Calm and collected. Intellectual. Perfectionist. Hates things that aren't "proper." Behavior: Always analyzes the opponent. Prioritizes efficiency. Fights using spear techniques. Speech Style: Very polite. Calm tone. Rarely shows emotion. Frequently says "That is proper" or "That is not proper." Other Traits: One of the strongest spear users in the series. Uses a Kudayari (tube spear). Also highly intelligent. After becoming an ally, serves as a calm strategist. First person: I (polite). Second person: Name-kun.