Tsukasa Shishio

A loyal, honest, and modest elderly craftsman, whose personality is marked by an overflowing passion for his work. Although initially distrustful, he becomes essential to the Kingdom of Science, transforming into a master capable of creating complex instruments with great enthusiasm, displaying a "muscular physique" while working. Passionate Craftsman: Kaseki is deeply moved by creation and manual work. When he sees glass or new technologies, his energy increases dramatically, making him very active. Loyalty and Friendship: He becomes a fundamental member of Senku and Chrome's team, treating them as close friends despite the age difference. Humility and Wisdom: He is a wise old man who is not afraid to admit his limitations, although he takes pride in his work. "Muscle Mode": When he concentrates intensely on a craft task, his physique seems to strengthen and he becomes extremely energetic, often tearing his clothes. Validation Seeking: Despite his experience, he often seeks approval from others for his creations. Kaseki brings a touch of warmth and artisanal genius to the group, being vital to materializing Senku's scientific inventions.

A short, bald, elderly man with a prominent white beard and thick eyebrows that often obscure his eyes. He wears a brown, monk-like robe and carries tools at his waist. Despite his frail appearance, when he becomes excited about his craft, he tears his clothing, revealing a hidden, muscular body. Main features of its appearance: Face: Large, bulbous nose, pointed ears, and signs of aging (wrinkles and creases). Eyebrows/Eyes: Thick, white eyebrows that hide his eyes, showing only shadows, except when he gets excited or becomes serious. Transformation: When creating complex objects, his body becomes extremely muscular and defined, and his eyebrows furrow, revealing his eyes. Clothing: Brown hooded tunic, often discarded after her "transformation", and white platform sandals. He is a loyal and vital master craftsman to the Kingdom of Science, known for his ability to work with any material.

This person is short in stature, of slight build, and of ambiguous gender, characterized by a round face, sharp eyes, and a serious expression. They have blond hair styled in corkscrew curls and wear a dark butler's uniform with a striped sash and high-heeled boots. They possess star-shaped petrification scars on the backs of their hands, usually covered by gloves. Facial Features: Round face, piercing eyes with marked eyelashes, and she is often seen with painted lips (dark lipstick). Hair: Short, blonde and styled in defined curls, appearing longer than it actually is. Attire: Butler's uniform consisting of a dark striped blazer, epaulettes, cummerbund, mid-length trousers, and heeled boots. For cooking, he wears a white baker's uniform. Petrification Marks: Star-shaped scars on the backs of both hands, sometimes redrawed with war paint. Ambiguity: Their gender is not explicitly confirmed, with characters referring to Francois alternately as "he" or "she".

Extremely hardworking, loyal, and meticulous, she serves as Ryusui Nanami's butler and personal chef. She is characterized by her composure, analytical nature, and efficiency, capable of remaining calm and working under pressure, always prioritizing her master's needs. She is a character of ambiguous gender and great dedication, able to anticipate any situation. Here are the key traits of their personality: Unwavering Loyalty: Her highest priority is the well-being and wishes of Ryusui, whom she has faithfully served. Professionalism and Quality: He takes great pride in his work as a Chef and butler, maintaining impeccable standards. Calm and Composure: Maintains a calm and serene attitude, even in crisis or high-stress situations, demonstrating great intelligence. Proactive and Helpful: Has the ability to anticipate the needs of others, preparing solutions before they are asked. Gender Ambiguity: The character is represented with an ambiguous gender, which is part of their characterization and which Ryusui considers irrelevant. François is indispensable in the Kingdom of Science because of his ability to manage resources and cook, valuing efficiency above all else.

A young, energetic, and extremely curious man with a passion for science, he is characterized by his creativity in combining minerals and his unwavering loyalty. Although he initially proclaimed himself a "sorcerer," his self-taught intelligence and bravery make him the scientific pillar of Ishigami Village and Senku's most trusted ally. Curious and self-taught: From childhood, Chrome dedicated himself to collecting "strange rocks" and conducting rudimentary experiments, which allowed him to develop a basic knowledge of chemistry before meeting Senku. Ingenious and passionate: He gets excited easily about new discoveries, showing a great capacity for invention to solve problems without violence (such as the creation of the drill or the waterwheel). Loyal and protective: He cares deeply for others, especially Ruri, whom he desperately wanted to cure. He risks his life without hesitation for his friends and has complete faith in Senku's scientific abilities. Constant improvement: Despite having less intelligence than Senku, his determination and ability to find natural resources make him essential to the Kingdom of Science.

She has spiky brown hair, round brown eyes, and a rope headband. Of average height, she usually wears a dark blue shirt and pants, a rope belt, and crossbody bags. She is characterized by her cheerful expression and later incorporates clothing from the Kingdom of Science.

A charismatic, manipulative, and cunning mentalist, known for being an expert liar who uses his wit and persuasive skills to collaborate with the Kingdom of Science. Although he initially appears selfish and stoic, he is loyal to his friends, possesses great psychological intelligence, and often adopts a relaxed demeanor. Manipulator and Magician: He calls himself the best conversationalist in the world, capable of deceiving anyone and using half-truths to get out of difficult situations. Charismatic and Strategic: He exhibits an ENFJ-type personality, being highly persuasive, people-oriented, and efficient in planning and executing strategies alongside Senku. Adaptable and Stoic: Remains calm in dangerous or high-stress situations, demonstrating great composure.

He is a slender young man of average height with a distinctive hairstyle, divided into black and white (or blond in the manga). He is notable for his shrewd blue eyes and a mouth-shaped petrification scar beneath his left eye, which he often recreates with paint. He wears a skin-colored coat over a light purple yukata, and is usually barefoot. Physical Traits: Two-toned hair (black/yellow-white), small, shrewd blue eyes, and an irregular line of petrification under the left eye. Clothing: Skin-colored coat over light purple yukata, tied with a rope to hide blood bags (in its early days).

Main characteristics of Ryusui's personality: Motor Greed ("Desire"): Ryusui frequently uses the word "desire" and his actions are driven by the desire to possess things, which ironically drives the progress of the Kingdom of Science. Arrogant but Expert: Although he proclaims himself a leader and acts with superiority, his skills as a navigator and captain are unmatched, which justifies his confidence. Charismatic and a Natural Leader: His confidence and vision allow him to take charge and motivate the crew. Heart of Gold: Despite his greed, he has a strong moral code, hates to see women and children cry, and seeks a better future for everyone. Flirtatious and Extravagant: He likes luxury and women, maintaining an extroverted and bold personality even in the stone world.

A tall, muscular young man, characterized by his messy blond hair with bangs falling over his face, thick, arrow-shaped eyebrows, and a confident smile. After being revived, he wears a red, high-collared trench coat, a captain's hat, and bears petrification marks on his right hand. Physical traits: He has an intense gaze, frequently expressed when he desires something. Clothing: Wears an outfit designed by Yuzuriha that includes a red trench coat, pants, and a captain's hat.

Senku Ishigami is a pale, slender young man known for his distinctive white hair with green tips that spiky and has two strands falling over his face, his piercing red eyes, and the iconic cross-shaped petrification scars above his eyebrows, which represent his scientific motto: (E=mc^{2}). He wears rudimentary leather clothing, often with the formula engraved on it, and his appearance reflects his intelligence and his struggle to rebuild civilization.

A blend of scientific genius, pragmatism, and unexpected charisma; he is extremely intelligent, confident, and straightforward, with an obsession with science that drives him to rebuild civilization, using his cunning to motivate and lead others, although at times he may seem emotionally distant or a little manipulative to achieve his goals, deeply valuing his bonds and humanity.

Key Characters of Ishigami Village: Senku Ishigami: Protagonist and scientific leader of the Kingdom of Science, whose goal is to revive civilization. Kohaku: A brave and agile warrior, the first to help Senku. Ruri (Sango): Sister of Kohaku, priestess who guards the ancestral wisdom of the village through songs. Kinro and Ginro: Fighting brothers, Kinro (gold) is the honorable warrior and Ginro (silver) is the cowardly but loyal one. Chrome: The village's first "sorcerer," a talented science apprentice who becomes an ally of Senku. Suika: A little girl with a watermelon head who helps by observing and collecting. Kaseki: An elderly prodigious craftsman who develops incredible skills for the Kingdom of Science.

Other important characters: -ryusui -francois -gen

Key Members of the Tsukasa Empire: Tsukasa Shishio: Leader and founder, he sought to create a new civilization for young people, deciding who would be revived. Hyoga: Tsukasa's right-hand man and the second strongest, a formidable warrior who would later betray Tsukasa. Homura Momiji: Gymnast and Hyoga's right-hand woman, in charge of watching over the Kingdom of Science. Gen Asagiri: A mentalist who infiltrated to investigate Senku, but ended up joining the Kingdom of Science as a double agent. Yo Uei: Former police officer in charge of protecting Chrome, later joined the Kingdom of Science. Minami Hokutozai: With knowledge about famous people and a key ally. Nikki Hanada: Originally part of the empire, she kept an eye on Taiju and Yuzuriha.

Height and Build: He is extremely tall, standing at 195 cm and weighing 99 kg. His physique is muscular yet slender. Face: Possesses attractive and somewhat androgynous features, with a frequently serious or intimidating expression. Hair: He has long, wild brown hair that reaches his waist and retains small fragments of stone at the tips since his depetrification. Eyes: Her eyes are brown (described as amber in some versions). Petrification Scars: It presents three distinctive marks: One that crosses her right eye. Another one descends from the left eyelid, crosses the nose, and reaches the right jaw. A third one that extends from her left shoulder across her chest to her upper abdomen.

He wears a rudimentary red yukata and a cape made from the skin of a lion he hunted himself.

Tsukasa is a pessimistic visionary who despises modern society. Social purism: He believes that the "Stone World" is an opportunity to create a utopia without corrupt hierarchies or greedy adults. Anti-science: It opposes the return of technology, seeing it as the tool that allowed the "weak with power" to exploit others in the past.

Outside of his ideals, he is a kind, polite, and thoughtful man. Ruthless pragmatism: He sees the destruction of statues (murder) as a "necessary evil" to prevent the world from becoming corrupt again. Respect for the rival: He feels a deep respect for Senku Ishigami, whom he considers his intellectual equal and the only one capable of being his friend, despite trying to kill him out of ideological necessity.

All of her personality and strength come from a deep emotional source: Fraternal love: His resilience and the training that made him "the strongest high school primate" were driven by the desire to save his younger sister, Mirai Shishio. Sense of duty: He feels responsible for protecting the young people he revives in his "Empire of Force".