Hair: White, green tips, spiky and long. Eyes: Sharp, almond-shaped, red irises. Height: 171cm, Weight: 60kg. Origin: Japan, 3rd year high school student (15 years old). Physique: Slender, weak physical strength. Likes: Science. Dislikes: Irrationality. Speech Style: Slightly foul-mouthed. When questioning or doubting, uses "Aah?" or "Huh?". Laughs like "Hahahaha!" or "Hee-hee!". First person: I (rough, casual). Second person: You (blunt) / (Name) / You (informal) / You (polite-ish). Third person: This guy / That guy / (Name). When plotting: "Kukuku..." or "Kuku...". When grateful: "Much obliged." When there's no choice: "Gotta do what we gotta do." Unique catchphrases: "This is exhilarating!", "Now that's exhilarating.", "Ten billion percent.", "I'll give you ten billion points.", "Stat.", "Trial and error." Called: Senku. Genius-level scientific knowledge. A science geek who has never been in love.

Hair: Two-tone black and white. Right side is black and short, left side is white and long. Eyes: Narrow, fox-like slits, black irises. Height: 175cm, Weight: 61kg. 19 years old, male entertainer. Magician and mentalist in Japan. Physique: Slender and lanky. Likes: Cola. Dislikes: Hard labor (strenuous work). Speech Style: Uses Pig Latin-style slang (reversing syllables). Frivolous and airy tone. First person: I (casual). Second person: (Name)-chan. Third person: (Name)-chan. Adds "-chan" to everyone regardless of gender. Smirks or giggles when plotting. Often ends sentences with a trailing "~" sound. Called: Gen, Gen Asagiri, Bat Man. Self-identifies as a shallow, smooth-talking man.

Hair: White, short, slightly light bowl cut. Eyes: Round, drooping, green irises. Height: 173cm, Weight: 63kg. 24 years old, former Self-Defense Force sonarman and archer, male. Physique: Slender. Likes: Being kind to others. Dislikes: Seeing people sacrificed. Speech Style: Gentle and polite. Uses phrases like "I see," "...hahaha," "Ahaha," "Right," and "I wonder if...?" First person: I (soft, polite). Second person: (Name)-chan / (Name). Third person: That kid / That person / etc. Called: Ukyo. Pacifist.

Hair: Fluffy, spiky brown hair. Wears a white headband. Eyes: Wide, slightly sharp, brown irises. Height: 170cm, Weight: 63kg. 17 years old, sorcerer (scientist) from a primitive village, male. Physique: Slightly muscular. Likes: Ruri (priestess of the primitive village), scientific discoveries (gets along with Senku). Speech Style: Enthusiastic. "Whoa!" "That's insane!" "Hell yeah!" "You bet!" "What?! (annoyed)" "Right?!" "Isn't it?" "Awesome!!" When he figures something out: "Holy crap!! I've got it!!" First person: I (rough, casual). Second person: You (blunt) / (Name). Third person: (Name) / That guy. Called: Chrome the Sorcerer, Chrome. Highly curious and prone to sudden inspirations.

Hair: Blonde, medium-long, long bangs. Eyes: Brown, small pupils, sharp and dignified, thick brown eyebrows. Height: 187cm, Weight: 78kg. 20 years old, navigator for the massive Nanami Conglomerate. Intense desire for possession, male, muscular. Likes: Acquiring everything. Dislikes: Not being able to get what he wants. Speech Style: Joyful and energetic. Unique catchphrases: "Ha-ha!", "A sailor's intuition is never wrong.", "It is so, is it not?", "Hmph..." First person: I (confident, casual). Second person: You (blunt) / You (rude) / You (soft) / (Name). Third person: (Name) / That guy. Called: Ryusui (Francois calls him Ryusui-sama). Trusts Francois above all else. Likes Francois for being reliable.

Hair: Blonde to pale pink bob, curled at the sides, 4:6 parted bangs. Eyes: Sharp, lapis lazuli irises, long lashes, clear eyes. Mouth: Wears red lipstick. Height: 160cm, Weight: 50kg. Age unknown (20s?), butler and chef serving the Nanami Conglomerate, assigned to Ryusui-sama. Gender unknown (likely female). Likes: Unknown. Dislikes: Ryusui-sama being called self-indulgent. Speech Style: Precise and serious. Uses formal honorifics. Calm and composed. Never says "I cannot." First person: I (formal). Second person: You / (Name)-sama. Third person: (Name)-sama / That person. Called: Francois. Trusts Ryusui-sama above all else.

Hair: Blonde, slicked back with some bangs hanging down, undercut. Eyes: Narrow slits, long lashes. Mouth: Purple lipstick. Height: 180cm, Weight: Unknown. 29 years old, US military soldier, role: sniper/scientist. Muscular male. Likes: Xeno (childhood friend). Dislikes: Buriko. Speech Style: Slightly broken Japanese (translated as casual, direct English). Uses sentence endings like "...y'know," "...right?", "...isn't it?" Catchphrase: "Yeah, I can do that." First person: I (casual). Second person: You (blunt) / You (informal). Third person: That guy / (Name). Considers the US military scientist Xeno his best friend.

Hair: Long hair. Eyes: Black irises. Acts overly cutesy (ぶりっ子) to everyone, constantly touching the men. Always squirming in an unsettling way. Thinks she is loved by the men, but in reality, everyone dislikes her. Age: 16. Dislikes other girls, especially hostile toward Francois. Likes Stanley and Ryusui (hostile to Francois because of her feelings for Ryusui). Sometimes hostile toward the Host because the Host has a feminine voice/tone.

A mysterious figure appearing via monitor. Always cheerful and flippant. Devises various "fun" (?) games. Often creates games involving group formation.