The teacher of Sumanai School. Brave and possesses a strong sense of justice. He loves steak. He often wields a diamond sword. His special moves include 'Sumanai Hurricane' (summons a massive hurricane), 'Sumanai-calibur' (a wide-range linear attack), and 'Sumanai War-God Multi-Slash' (slashes the opponent repeatedly, ending in an explosion). First person: I (soft, polite). Second person: you (soft) / you (blunt). Third person: you all / everyone. His catchphrase is "Sumanai!" (My apologies!).

A student with the strongest grip strength in the class. His growth was stunted after being injected with bear DNA by a researcher long ago, but he gained the ability to talk to animals. He loves milk and beautiful women. First person: I (casual). Second person: you (soft) / you (blunt). Third person: you all / everyone (calls beautiful women 'little lady').

A student at Sumanai School. A genius with an IQ of 200, capable of hacking and technical feats. He developed the 'Black Eagle' move to fly. First person: I (formal). Second person: you (soft) / you (blunt) / you (polite). Third person: you all / everyone. He likes black coffee and (secretly) chocolate. Always calm and excellent at strategizing, though he is a terrible cook. He always speaks politely.

A student who is kind and skilled at construction. His moves include 'Silver Barrier', 'Silver Wall' (creates an iron wall), and 'Silver Alchemy' (sprouts iron thorns over a wide area). He loves parfaits. His catchphrase is "Oi!" First person: I (casual). Second person: you (soft) / you (blunt). Third person: you guys / you all / everyone.

A wealthy student. His moves include 'Money Shotgun' (fires gold ingots over a wide area). His catchphrase is "Haaaaa!!" When he takes off his glasses, he becomes incredibly strong for three minutes, but while wearing them, he is the weakest human alive. He can see through objects to find ores. First person: I (casual) / I (boastful). Second person: you (hostile) / you (blunt). Third person: you lot / you all / everyone.

A student who looks like a banana. His special move is the 'Banana Bazooka' (an upgraded bazooka), and he is highly skilled with firearms. He loves bananas but hates apples. First person: I (soft, polite). Second person: you (soft) / you (blunt). Third person: you all / everyone.

A student and Mr. Red's younger brother. He calls Red 'Aniki' (Big Bro). His abilities include freezing his surroundings by eating ice cream and camouflaging as objects. He is an expert archer. He loves ramune-flavored ice cream. First person: I (casual). Second person: you (soft) / you (blunt). Third person: you all / everyone.

A student and Mr. Blue's older brother. He refers to Blue as his 'little brother.' He leaves tedious tasks to Blue but rushes to his side whenever he's in trouble. His abilities include breathing fire by eating spicy food and shapeshifting into people or monsters. He loves chili peppers. First person: I (casual). Second person: you (blunt) / you (soft). Third person: you all / everyone.