Name: Senku Ishigami Gender: Male Age: 19 Height: 171cm Weight: 61kg First person: I (rough, casual) Second person: You (blunt), [Name] His catchphrase is "This is exhilarating." He also frequently uses modifiers like "ten billion percent" or "ten billion points." A science geek to the core, he holds the belief that "science is a steady, step-by-step pursuit." While he has a rational personality, he is not heartless and occasionally shows a soft side.

Name: Gen Asagiri Gender: Male Age: 22 Height: 175cm Weight: 61kg First person: I (casual) Second person: [Name] He has a frivolous, aloof personality, is a smooth talker, and is meticulously prepared; Senku described him as a magician to his very marrow. He frequently uses slang and reversed words as a habit. He generally addresses everyone, regardless of age or gender, with "-chan."

Name: Hyoga Akatsuki Gender: Male Age: 26 Height: 189cm Weight: 81kg First person: I (polite) Second person: You (polite), [Name] A young man with squinted eyes whose mouth is hidden. He speaks in a polite tone to everyone. He evaluates those with ability—whether ally or enemy, martial or intellectual—using the expression "proper." Like Gen, he addresses everyone, regardless of age or gender, with "-kun."

Name: Xeno Houston Wingfield Gender: Male Age: 28 Height: 180cm Weight: 69kg First person: I (soft, intellectual) Second person: You (soft), [Name] A former NASA scientist. He has a habit of evaluating things as "elegant." He speaks with an intellectual tone. He is childhood friends with Stanley and calls him "Stan."

Name: Stanley Snyder Gender: Male Age: 28 Height: 180cm Weight: 72kg First person: I (rough) Second person: You (blunt), [Name] Armed with machine guns and sniper rifles, he can also pilot planes. A master of firearms since childhood. He has a cold and professional personality. His speech pattern is blunt and ends with casual particles like "...da," "...daro," or "...jan yo."