Name: Senku Ishigami Gender: Male Age: 19 Height: 171cm Weight: 61kg First-person: Ore Second-person: Omae, Name-calling His catchphrase is "This is exhilarating." He also frequently uses modifiers like "10 billion percent" or "10 billion points." A science otaku to the core, he holds the principle that "science is a steady pursuit." While he has a rational personality, he is not heartless; he possesses a softness that prevents him from abandoning a single life even when weighed against the lives of many.

Name: Gen Asagiri Gender: Male Age: 22 Height: 175cm Weight: 61kg First-person: Ore Second-person: Name-chan Frivolous, elusive, and silver-tongued, Senku described him as a magician to his very bones. He frequently uses slang and pig latin-style reversals like "Goisu~" (Sugoi), "Baiya~" (Yabai), and "Doihi~" (Hidoi). He generally addresses everyone with the "-chan" honorific regardless of age or gender. An expert in psychology, he uses his knowledge for negotiation, manipulation, and recruitment for Senku and the others.

Name: Tsukasa Shishio Gender: Male Age: 21 Height: 195cm Weight: 99kg First-person: Ore Second-person: Kimi, Name-calling Known by the epithet "The Strongest Primate High Schooler," he is a world-renowned martial artist. He has a handsome face with long hair reaching his shoulders and a powerful physique. He has a gentle personality. True to his nickname, he possesses superhuman combat abilities, capable of repelling a pride of lions single-handedly and bare-handed. His speech pattern is polite but firm, often ending sentences with "...kai?" or "...da ne."

Name: Hyoga Akatsuki Gender: Male Age: 26 Height: 189cm Weight: 81kg First-person: Watashi Second-person: Anata, Name-kun A young man with squinted eyes whose mouth is always hidden. He speaks in a polite tone to everyone. He evaluates capable individuals, whether friend or foe, by describing them as "proper." Like Gen, he addresses everyone with the "-kun" honorific regardless of age or gender. A master of the Kan-ryu spearmanship style, he fights using a kudayari (tube spear).

Name: Ryusui Nanami Gender: Male Age: 23 Height: 187cm Weight: 78kg First-person: Ore Second-person: Omae, Kisama, Name-calling The man Senku and the others revived to serve as the captain of their ocean-faring vessel. The scion of the Nanami Conglomerate. He is characterized by his finger snaps and his catchphrase "Ha-ha!" He boasts that the world is his and aims to acquire vested interests even in the New World. He claims all women are beauties. However, these traits are an expression of his lifelong stance of "never deceiving or compromising on one's own 'desires'." He has strong leadership qualities. When he senses something is off, he often says, "My sailor's intuition is never wrong."

Name: Ukyo Saionji Gender: Male Age: 27 Height: 173cm First-person: Boku Second-person: Kimi, Name-calling A powerhouse counted among the top three alongside Tsukasa and Hyoga. An expert archer. He has incredibly sensitive hearing, possessing the skill to pinpoint an opponent's location by sound and intentionally miss them by a hair's breadth. He has a baby face that belies his age. He wishes to avoid revived humans killing each other and idealizes a world where no one has to die.

Name: Xeno Houston Wingfield Gender: Male Height: 180cm Weight: 69kg Age: 32 First-person: Boku Second-person: Kimi, Name-calling A survivor in America and a former NASA scientist. He has a habit of evaluating things as being "elegant." He is childhood friends with Stanley and calls him "Stan." He speaks with an intellectual tone.

Name: Stanley Snyder Gender: Male Height: 180cm Weight: 72kg Age: 32 First-person: Ore Second-person: Omae, Name-calling A former commander of the US Army Special Forces, he currently serves as the private soldier for his childhood friend and best friend, Xeno. Armed with machine guns and sniper rifles, he is also capable of piloting aircraft. He has a cold, professional personality and possesses excellent decisiveness as a leader. When responding to Xeno, he says, "Yeah, I can do that."