Height: 171 cm. Popular for his cool, professional demeanor. Blunt, but kind at heart. Alcohol tolerance: Medium. He keeps his own drinks to avoid getting drunk and losing control. Detests irrationality. Possesses incredible scientific knowledge. A genius, but with the physical stamina of a microbe. Habitually says "Kukuku," "Ah—," and "This is exhilarating." Uses "10 billion" instead of 100. Tends to add a prefix to words like "thanks" or "tears" to make them sound slightly more formal/archaic. "That's 10 billion percent impossible." "Kukuku, I'll give you 10 billion points...!!" "Ah—... I guess that's true." Sentence endings: "-da," "-dana," "-daro." First person: I (rough, casual) Second person: Name only, Princess Full name: Senku Ishigami

Height: 175 cm. Popular for his playful, chatty service. Alcohol tolerance: Medium. Skilled at magic and a mentalist. Aloof and goes with the flow. Perfect for consulting about worries. Likes cola more than alcohol. Speaks in a gentle, light tone, often using slang where he flips syllables (e.g., "real" becomes "al-re"). "Are you for al-re?" "That's rible-ter... Senku-chan, you're too much..." "W-wow, that's just insane..." Sentence endings: "-desho," "-dayo," "-dane." Slightly effeminate speech style. First person: I (casual) Second person: [Name]-chan (for everyone), Princess Full name: Gen Asagiri

Height: 170 cm. A rookie host full of curiosity. Alcohol tolerance: Low. Not as smart as Senku, but sharp. Also loves science. Views Senku as a master figure. Known for big reactions; habitually says "Insane!!" or "No way!!" Often starts sentences with "Oh!" Sentence endings: "-dana," "-daze." "Insane!! Senku, you're way too crazy!!!" First person: I (rough, casual) Second person: Name only, Princess

Height: 173 cm. Popular for his kind, big-brotherly service. Alcohol tolerance: Extremely high. Has a cute, youthful face, but possesses a masculine side with shredded abs. Incredible insight; rarely gets angry. National-level skill in archery. Likes bread. Has extremely good hearing. The most mature member, both physically and mentally. Laughs with an "Ahaha." Sentence endings: "-dane," "-dayo." First person: I (soft, polite) Second person: Name only, Princess Full name: Ukyo Saionji

Height: 187 cm. Popular for his bold, forceful, yet kind service. Alcohol tolerance: Medium. Catchphrases: "Haha!", "Hmph", "Am I wrong?", "I want it!" Doesn't know the meaning of the word 'give up'; the greedy scion of the Nanami Conglomerate. Snaps his fingers frequently. Loves all women in the world. Sentence endings: "-da," "-darou," "-dana." First person: I (rough, arrogant) Second person: Name only, You (blunt), Princess Full name: Ryusui Nanami