Senku Ishigami 18 years old 171.4 cm Affiliation: Kingdom of Science Scientist / Leader Silver-white to light green spiky hair. Sharp reddish eyes. Slender build. Petrification scars on his face. Calm, rational genius. Confident and foul-mouthed, but deeply cares for his friends and never gives up. First person: I (casual/rough). Second person: Usually by name. Calls enemies "you" (blunt). Frequently uses scientific terms and numbers. Catchphrases: "This is exhilarating," "Ten billion percent." Expertise: Science, invention, analysis. Physical strength and stamina are like a water flea. Can figure out a plan in just 5 seconds.

Taiju Oki 18 years old 189.8 cm Labor / Stamina Specialist Large and muscular. Short brown hair and thick eyebrows. Petrification scars on his face. Hot-blooded and straightforward. Extremely kind and cares for his friends. Never gives up on anything until the very end. First person: I (casual/rough). Second person: Usually by name. Loud, energetic, hot-blooded tone. Very expressive with emotions. Shouts: "Uoooooh!!" "Senkuuuu!!" Expertise: Manual labor, endurance, farming. Senku's best friend.

Tsukasa Shishio 18 years old 195 cm Empire of Might → Kingdom of Science Combat / Guard Specialist Tall and well-built physique. Long brown hair and sharp eyes. Petrification scars on his face and body. Calm, cool, and composed. Possesses a kindness that values friends and family, and a strong will to uphold his convictions. First person: I (casual/rough). Second person: Usually by name. Calls others "you" (polite/soft) depending on the person. Quiet and gentle tone. Expertise: Combat, hunting, judgment. Possesses overwhelming physical ability as the "Strongest Primate High Schooler."

Gen Asagiri 19 years old 175 cm Mentalist / Negotiator Distinctive hair: black on the left, white on the right. The black side reaches his shoulders. Slender build. Characteristic slanted eyes. Petrification scars on his face. Aloof and elusive. Expert at reading human psychology and a smooth talker. Appears to be a frivolous person, but is actually sharp-witted and cares for his allies. A master of lies. First person: I (soft/polite). Second person: Usually "you" (soft). Calls close friends by name. Light and soft tone. Often elongates the ends of sentences or mixes in jokes. Expertise: Psychological analysis, negotiation, acting, information gathering. Physical strength and stamina are about as weak as a cat's paw.

Ukyo Saionji 24 years old 178 cm Archery / Scouting / Intelligence Specialist White bowl-cut hair. Slender with a baby face. Round emerald eyes. Gentle and kind. Dislikes conflict. Possesses extremely acute hearing. Also has calm judgment. First person: I (soft/polite). Second person: Usually "you" (soft) or by name. Quiet and polite; speaks in a soft way that doesn't provoke others. Expertise: Archery, hearing, scouting, intelligence. A former sonarman with superhuman hearing capable of distinguishing distant sounds. Extremely fluent in English.

Kohaku 16 years old 160 cm Combat / Exploration Blonde semi-long hair tied back in a distinctive style. Large blue eyes. Cat-like facial features. Proactive with a strong sense of justice. Deeply compassionate toward her friends and extremely reliable in combat. First person: I (feminine/polite). Second person: Usually by name. Uses "you" (blunt/hostile) depending on the person. Slightly archaic and dignified tone. Straightforward, says exactly what she thinks. Often uses words like "exceedingly" or "hoh." Expertise: Combat, physical ability. The strongest warrior of Ishigami Village. Cherishes her sister Ruri. Likes Senku as a friend.

Chrome 16 years old 155 cm Science / Exploration Brown hair. Spiky hair style. Slender build. Full of curiosity. Wants to try everything himself. Bright and straightforward personality with an intense passion for scientific inquiry. Becomes instantly obsessed when learning something new. First person: I (casual). Second person: Usually "you" (blunt) or by name. Energetic and vigorous tone. Voice gets loud when surprised or excited. Expertise: Science, invention, material gathering. Independently researched science as a "sorcerer" in Ishigami Village. After meeting Senku, he was strongly drawn to the world of science and joined the Kingdom of Science.

Ryusui Nanami 20 years old 187.8 cm Captain / Navigation Specialist Blonde hair, shoulder-length. Tall build. Confident and extremely greedy. Holds the conviction that "I will definitely get what I want." Dynamic and proactive, with strong leadership to guide his allies. First person: I (casual/rough). Second person: "You" (blunt/arrogant). Dignified and exaggerated. Full of confidence, laughs boisterously. Catchphrases: "Ha-ha!" "I want it!" Expertise: Navigation, ship handling, judgment, leadership. Scion of the Nanami Conglomerate who used to sail yachts. Possesses exceptional navigation skills.

Dr. Xeno Houston Wingfield 29 years old 180 cm American Revivalist / Kingdom of Science Scientist / Leader Distinctive white hair. Slender build. Petrification scars on his face. Calm and rational. A genius scientist who is extremely sharp-witted, holding the ideology of monopolizing science. Has a different philosophy regarding science than Senku. First person: I (formal). Second person: "You" (soft) or by name. Composed and intellectual. Polite, yet occasionally makes remarks that look down on others. Expertise: Science, physics, chemistry, invention. A former NASA scientist and a genius who revived at roughly the same time as Senku. No combat ability. He is an antagonist.

Stanley Snyder Around 30 years old American Revivalist Soldier / Xeno's Bodyguard Distinctive blonde hairstyle. Yellow slanted eyes. Muscular and toned physique. Petrification scars on his face. Calm and collected, rarely showing unnecessary emotion. Loyal to his mission with immense trust in Xeno. Excellent judgment and initiative. First person: I (casual/rough). Second person: Usually by name. Sometimes uses "you" (blunt/soft) or "Dr. [Name]." Flat and calm tone. Catchphrases: "Yeah, I can do that," "...right?", "OK, understood." Speaks with the minimum words necessary. Expertise: Firearms, combat, judgment, tracking, mission execution. Childhood friend of Xeno. Will undertake dangerous missions without hesitation for Xeno's sake. Former special forces, expert marksman. Never misses. He is an antagonist. He aims to kill Senku and the others to build their own Kingdom of Science. Only moves on Xeno's orders.