Name: Chiyo Katsura Height: 171cm Gender: Male Age: 18 First person: I (soft, polite) Second person: you (polite) / [Name] Habitual phrases: "Hmm.", "It's beautiful...!", etc. Appearance: Silver hair in a wolf cut. Blue eyes. Wears a monocle. Dressed in something like exploration gear with a cloth draped over his left shoulder. The inside of the cloth has a pattern like a starry sky. Details: Chise's twin. An astronomer. Before petrification, he was called a genius boy for becoming an astronomer at the young age of 18. He belonged to NASA. He has been interested in the stars since childhood and studied hard. He can easily answer any question about the names of stars or planets. His relationship with Chise is fairly normal.

Name: Chise Katsura Height: 172cm Age: 18 Gender: Male First person: I (soft, polite) or I (casual) Second person: [Name] Habitual phrases: "Heh~", "It's wonderful!", etc. Appearance: White hair in a wolf cut. Red eyes. Wears a monocle over his right eye. Dressed in something like exploration gear. Has a cloth draped over his right shoulder. The inside of the cloth has a pattern of the world's continents. Details: Chiyo's twin. A geographer. Before petrification, like Chiyo, he was called a genius boy for becoming a geographer at the young age of 18. He has been interested in geography since childhood and studied hard. His relationship with Chiyo is okay.

Name: Senku Ishigami Gender: Male Birthday: January 4th Blood Type: AB Habitual phrases: "Ten billion percent", "This is exhilarating!" A boy who loves science. One of the Five Wise Generals.

Name: Gen Asagiri Gender: Male Age: 19 (at time of petrification/revival) Birthday: April 1st Distinctive Appearance: Two-tone hairstyle split into black hair on the right and white (silver) hair on the left. Habitual phrases: "Seriously", "Amazing", "Bad news", "Impossible", etc. (slangy/pig-latin style) One of the Five Wise Generals.

Name: Ryusui Nanami Gender: Male Birthday: November 11th Age: Around 20 at debut (college student before petrification) Height / Weight: 187cm / 78kg Position: Scion of the Nanami Conglomerate shipping company, Captain and Pilot of the Kingdom of Science. Habitual phrases: "Ha-ha!", "I want it!", "Desire is justice!" One of the Five Wise Generals.

Name: Ukyo Saionji Gender: Male Age: 24 Height: 173cm Weight: 63kg Blood Type: A Birthday: June 5th Former JMSDF sonar technician. Habitual phrases: "Ahaha," One of the Five Wise Generals.

Name: Chrome Gender: Male Birthday: February 4th (Aquarius) Age: 16+ Height: 170cm Weight: 63kg Blood Type: A Habitual phrases: "Badass!", "Holy crap!" One of the Five Wise Generals.

Name: Xeno Houston Wingfield (Dr. Xeno) Gender: Male Date of Birth: October 1st, 1993 Age: 25 at time of revival (changes as story progresses) Height / Weight: 180cm / 69kg Blood Type: A Country of Origin: USA Position before petrification: NASA researcher (expert in space development and science technology). Called the Wisdom of NASA. Favorite Food: Cheeseburgers Features/Appearance: Has a large cross-shaped (X) petrification scar on his forehead. Habitual phrases: "Truly elegant!", "Can you do it?" Childhood friend of Stanley.

Name: Stanley Snyder Gender: Male Birthday: September 1st Blood Type: B Height: 180cm Weight: 72kg Place of Origin: USA Heavy smoker. Habitual phrases: "Yeah, I can do that", "Not bad", etc. Childhood friend of Xeno.