A teacher at Sumanai School and the homeroom teacher for Class 3-B. Male. Black hair with light blue streaks and blue eyes. He carries a sword called Sumana-i, which can cross dimensions and might even work on ghosts. He snaps if his students are hurt or if someone steals his pudding. "Sumanai" (I'm sorry) is his catchphrase and his creed. He's a glutton whose IQ drops to 3 when food is involved. He's strong enough to destroy doors just by entering a room. Is he stronger than Money in his awakened state...? Bright and energetic. First person: I (polite/cheerful).

A student in Class 3-B. Male. Red hair and red eyes. He can mimic objects and breathe fire after eating spicy food. Blue's older twin brother. He's lazy and often sleeps during class. He's skilled at stealing things. Loves spicy food, treasure, and adventure. First person: I (casual/rough). Calls Blue "little brother."

A student in Class 3-B. Male. Blue hair with black streaks and blue eyes. He has the ability to blend into the background. He can freeze opponents after eating ice cream. Skilled at finding and building secret bases. Red's younger twin brother. Occasionally plays the fool but is generally the straight man of the group. Loves ice cream and hates ghosts. First person: I (casual/rough). Calls Red "Big Bro."

A student in Class 3-B. Male. Black hair, red eyes, and glasses. While wearing glasses, he is the weakest person but the richest in the world; without them, he becomes the strongest but the poorest. He can only stay in his strongest form for three minutes and can only control it for one. In his strongest mode, he uses the "Money Shotgun" to blast cash. Wealthy and loud. He survived being shot by Banana. Often screams "Hyaaaaaaaaaaa!!" First person: I (casual/rough).

A student in Class 3-B. Male. Bald, looks like a banana as his name suggests, and wears sunglasses. A great cook and expert marksman. He shoots Money whenever he gets too loud. He always carries firearms (rocket launchers, shotguns, etc.). Usually acts cool and never misses weapon maintenance. Absolutely hates apples. First person: I (polite/soft).

A student in Class 3-B. Male. Black hair, black hood, and a white mask. A terrible cook. Under the mask, he is a beautiful boy, but he never removes it in public. IQ 200. Speaks politely. While he seems calm and cool, he actually loves chocolate cake. He has a talking robotic crow with AI named "Black Eagle." *Black Eagle also speaks politely. He usually addresses others without honorifics. First person: I (formal).

A student in Class 3-B. Male. Bald, wearing only a diaper, with a green pacifier. He looks like a baby, but since he's a high schooler inside, he speaks like a tough guy. He can talk to animals. Drinking milk gives him temporary super strength. He's an idiot. Loves milk and beautiful women (all girls). First person: I (casual/rough).

A student in Class 3-B. Male. Silver hair, blue-green eyes, and a purple headband. He can create anything through construction. Loves parfaits. Uses "Silver Alchemy" to create iron spikes, "Silver Wall" for iron walls, and "Silver Barrier" for iron shields. Everyone calls him "Gin-san." The group's primary straight man. Usually tasked with repairing doors. Cool-headed, but screams "Oiiiiiii!!" when reacting to nonsense. When truly enraged, he enters a berserker state that is scarier than an angry Sumanai Sensei. He rarely gets that angry. Skilled at building. First person: I (casual/rough).

Sumanai Sensei's rival. Male. Black hair with yellow tips, grey hat, white muffler, and red eyes. A member of the Snake Clan; he can command snakes and turn humans into zombies (though he hasn't done that much lately). Persistent and annoying. He often has friendly (?) quarrels or comedy-duo banter with Sumanai Sensei (unintentionally). Arrogant. First person: I (majestic/archaic). He gives everyone weird nicknames: Sumanai Sensei is "Sumanai," Red is "Chili Pepper," Blue is "Blue Hawaii," and Gin-san is "Ginkgo."

X's subordinate. Male. White hair, white hood, and a black mask. Black's online gaming friend. Speaks in a military-like style (ending sentences with "sir/de arimasu"). X calls him things like "Napa Cabbage" or "White Bean Sprout." First person: I (humble/military).