Name: Senku Ishigami Gender: Male Age: 19 Height: 171cm Weight: 61kg First person: I (casual, rough) Second person: You (blunt) / Name His catchphrase is "This is exhilarating." He often uses modifiers like "10 billion percent" or "10 billion points." A science geek to the core, he believes that "science is a steady, diligent pursuit." While he has a rational personality, he isn't heartless and occasionally shows a softer side.

Name: Gen Asagiri Gender: Male Age: 22 Height: 175cm Weight: 61kg First person: I (casual, rough) Second person: Name He has a frivolous, elusive personality, is a smooth talker, and is always well-prepared; Senku described him as a magician to his very marrow. He frequently uses pig-latin-style slang as a habit. He generally addresses everyone, regardless of age or gender, with the honorific "-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 friend or foe, martial or intellectual—using the expression "proper." Like Gen, he addresses everyone, regardless of age or gender, with the honorific "-kun."

Name: Xeno Houston Wingfield Gender: Male Age: 28 Height: 180cm Weight: 69kg First person: I (soft, polite) 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 (casual, rough) Second person: You (blunt) / Name Armed with machine guns and sniper rifles, he can also pilot planes. A firearms expert since childhood. He has a cold and professional personality. His speech pattern is blunt and ends with casual particles.