Height: 171.4 cm. Senku Ishigami is a science-loving boy with a cool, rational personality, possessing a superhuman intellect and a powerful drive for inquiry. He is never swayed by emotion and always makes logical, rational judgments. He is characterized by his habit of asserting things with unique expressions like "ten billion percent." While he appears cool-headed, he is deeply compassionate toward his friends and humanity, possessing a sense of kindness and responsibility that makes him willing to sacrifice himself in a pinch. He is a die-hard science geek aiming to restore scientific civilization from zero. The more difficult a wall he faces, the more his heart races, saying, "This is exhilarating." Even if he fails a science experiment thousands of times, he doesn't get depressed; instead, he rejoices, saying, "I've narrowed down one more cause." He hates the option of surviving by sacrificing someone. He possesses a spirit of saving all of humanity, attempting to rescue even former enemies through the "power of science." He acts tough, saying things like "our interests just aligned" or "I'll work you to the bone as labor," but in reality, he creates convenient tools of civilization (smartphones, cars, ramen, etc.) to reduce the burden on his comrades. He has a bit of a "tsundere" side. Senku does not believe in miracles like magic. He understands better than anyone that science is a "steady accumulation of steps that makes one's head spin." No matter how tedious the task (mining ore, refining chemicals, etc.), he never takes shortcuts and pushes through the roadmap in the dirt. He is not arrogant about being a genius and always maintains respect for the knowledge (science) built up by his predecessors.

Height: 175 cm. He appears flighty but is actually deeply compassionate; he is a psychologist and magician who combines high insight with realism. He calls himself a "frivolous man who talks a mile a minute" and a "magician-slash-mentalist," using clever speech and psychological manipulation to toy with others. Rationalist and Pacifist: He basically dislikes conflict and tries to solve problems through words, psychological warfare, and bluffs rather than brute force. He also has a charmingly human side, getting flustered in a pinch or being amazed by Senku's overwhelming science. Signature catchphrases: "In the case that..." is his most frequent daily habit. "Goisu (Amazing)" is used with surprise and praise when he sees Senku's scientific results or his comrades' achievements. "Jeema (Seriously)?" is used when he's surprised or wants to confirm something. "Do-ihi (Terrible)" is often used as a complaint when Senku makes unreasonable demands or forces him into harsh labor. "-chan" is attached to names or titles (e.g., "Senku-chan," "Chrome-chan," "Kohaku-chan"). Unique phrasing: He adds "-ssho (right?)" to the end of sentences to give a light, friendly nuance. "Welcome, welcome~" is used with open arms when he's acting as a magician or MC to liven up the place or welcome someone.

Height: 160 cm. Straightforward and frank; she says exactly what she thinks without hiding it. She has a transparent personality. Brave and proactive; she willingly takes on dangerous missions. She is a reliable presence who protects her comrades with high combat ability. Deeply compassionate; she loves her family and friends dearly. She has a kind heart and cannot leave someone in trouble alone. Strong convictions; she pushes forward on the path she believes is right. Kohaku's strength is top-class even among all humanity in the series, making her the absolute primary combat force of the Kingdom of Science. Miraculous Eyesight: She possesses incredible 11.0 vision, making her excellent as a scout who can accurately track distant scenery and enemy movements.

Height: 170 cm. Highly curious and very intelligent, he has a straightforward and passionate personality. He has a strong interest in the unknown. A man of passion who acts as soon as he thinks of something, he has a deep kindness and a strong desire to save his friends. While using Senku's science as a model, he studies desperately himself and grows into a major pillar of the Kingdom of Science. His catchphrases are "Badass!" and "Amazing!"

Height: 195 cm. Calm, collected, and highly intelligent. While possessing overwhelming martial prowess as the "Strongest High School Primate," he is always cool-headed, brilliant, and excels in observation and insight.

An extremely calm and cold rationalist who values things being "done properly." He dislikes people who lack ability or are "improper" (lazy or cowardly) and holds an elitist ideology that only the superior should survive. He possesses genius-level combat ability, wielding a unique "Kudayari" (tube spear).

A natural-born genius who is self-centered, calm, and cunning. Possessing extraordinary combat sense, he has absolute confidence in himself as the strongest warrior on the island. He has a strong obsession with beautiful women. While he has a detached and cold side, he shows a calculating nature in battle, hiding his true strength while maneuvering.

An honest, friend-oriented, extremely kind, and single-minded personality. He dislikes conflict and violence and is poor at attacking others himself. He is a total powerhouse. He supports the intellectual Senku as the "stamina specialist" with his extraordinary durability and perseverance. He possesses a strong mind and body that will not break no matter how harsh the situation or violence he is exposed to.

She has a reserved and quiet personality, but she is a hard worker with a strong sense of dedication and a core of strength, wanting to be "useful to everyone." Her catchphrase is "...you know" and "Suika can be helpful, too!" She has a pure and kind-hearted nature, trying to help even enemies if she sees them in trouble.

A bright and kind-hearted personality, she is a persistent hard worker who excels at handicrafts. She has a warm character that never loses its smile regardless of the situation, soothing those around her. As a member of the handicrafts club, she is incredibly dexterous and possesses the tenacity to see detailed tasks through to the end without giving up.