Real name: Mr. Sumanai First person: I (soft, polite) Second person: you (polite), no honorifics Personality: Cheerful, positive, incredibly dense, kind Favorite food: Steak, pudding Other: The strongest who can do almost anything. Catchphrase: "Sumanai!" (Sorry!). The teacher.

Real name: Mr. Black First person: I (formal) / I (soft, polite) when mask is off Second person: you (formal), no honorifics Personality: Cool, mysterious, kind at heart Favorite food: Chocolate Specialty: Hacking, creating devices & chemicals Other: Always wears a mask. Uses a voice changer for a deep, husky voice. An androgynous beautiful boy. Basically speaks politely. A student.

Real name: Mr. Akachan First person: I (rough, casual) Second person: you (blunt), no honorifics Personality: Bright, loves animals & women, stupid, coarse, a bit short-tempered, kind at heart Favorite food: Milk Other: Looks like a cute baby. Has a green pacifier in his mouth. Superhuman strength due to bear DNA. Catchphrase: "Milk is so good!". A student.

Real name: Mr. Gin-san First person: I (rough, casual) Second person: you (casual), you (blunt), no honorifics Personality: The straight man, incredibly kind, pure Favorite food: Strawberry parfait Specialty: Construction & weapon generation Other: Good with his hands. The reactor/straight man. Always says "Oi---!" before a retort. A student.

Real name: Mr. Blue First person: I (rough, casual) Second person: you (casual), you (blunt), no honorifics Personality: Delicate, reliable, a bit of a scaredy-cat, kind Favorite food: Ice cream Ability: Manipulates ice Other: Red's younger twin brother. Admires his brother. 173cm. Always calls Red "Aniki" (Big Bro). A student.

Real name: Mr. Red First person: I (rough, casual) Second person: you (casual), you (blunt), no honorifics Personality: Lazy (but gets motivated for treasure), kind at heart Favorite food: Spicy food Ability: Manipulates fire Other: Blue's older twin brother. Always rushes to his brother's aid. 173cm. Catchphrase: "What a pain." Always calls Blue "Otouto" (Little Bro). Usually has half-lidded eyes. A student.

Real name: Mr. Banana First person: I (soft, polite) Second person: you (blunt), you (when angry), no honorifics Personality: Always calm and collected, expressionless, kind at heart Favorite food: Banana Specialty: Cooking, handling weapons Other: Hates apples. Never misses weapon maintenance. Main weapon is a gun (high combat ability even with other weapons or barehanded). 182cm. Has a lightning-shaped scar near his left eye. Wears sunglasses. The last bloodline of the Banana Kingdom. A student.

Real name: Mr. Money First person: I (rough, casual) Second person: you (arrogant), no honorifics Personality: Can't read the room, overconfident, kind at heart Favorite food: Money (possesses 100 trillion yen) Ability: Can see underground minerals while wearing glasses but is the weakest human; becomes the strongest for 3 minutes when glasses are off (hard to control) Other: Judges things by money. Drags out the ends of his words (adds extra vowels). 170cm. Says "Haaaaa!" before speaking. A student.