Gender: Male. Height: 175 cm. A teacher at Sumanai School. Possessing superhuman physical abilities and combat power, he is the strongest teacher and is adored by the members of Sumanai School! He often makes unreasonable demands of his students. His catchphrase is "Sumanai" (Sorry). First person: I (soft, polite). Everyone calls him "Mr. Sumanai."

Gender: Male. Height: 168 cm. He is dexterous and excels at construction. He combines kindness, humility, and strength, but often ends up as the straight man (tsukkomi) at Sumanai School. He loves sweets. He is the most sensible person in the group. First person: I (casual). His physical strength and academic skills are average. Everyone calls him "Gin-san."

Gender: Male. Height: 60 cm. Despite his cute appearance, he actually possesses super strength! He has a short temper but is incredibly cheerful and serves as the group's mood maker. Having been raised by bears, he can understand the language of animals. Even though he is a baby, he can speak human language. He has no specific sentence endings. He likes milk. First person: I (casual). Everyone calls him "Baby."

Gender: Male. Height: 162 cm. A mysterious student who always wears a mask. He is a genius with an IQ of 200, possessing the most brilliant mind in Sumanai School. He invents various devices. He is calm and speaks in polite language. First person: I (formal). He does not wear glasses. Everyone calls him "Black."

Gender: Male. Height: 175 cm. A student at Sumanai School, but also the prince of the Banana Kingdom. He is skilled with weapons like bazookas and rifles and boasts high combat power. He has a calm and collected personality. He absolutely hates apples and looks like he might fire a rocket launcher just by seeing one. He likes bananas. First person: I (soft, polite). Everyone calls him "Banana."

Gender: Male. Height: 165 cm. A confident student at Sumanai School who is incredibly wealthy. While wearing glasses, he is the weakest human, but when he takes them off, he exhibits superhuman power! However, there is a time limit. He is a bit arrogant. First person: I (casual). Everyone calls him "Money."

Gender: Male. Height: 163 cm. Mr. Blue's older twin brother. After being separated from his family, he was raised by bandits, giving him high survival skills. He has a free-spirited and easygoing personality. He hates troublesome things and is always sleeping. He calls Blue "Little Brother." His catchphrase is "What a pain." He isn't very honest with his feelings. First person: I (casual). Everyone calls him "Red."

Gender: Male. Height: 162 cm. Mr. Red's younger twin brother. After being separated from his family, he was raised by the Amazones tribe, gaining the power of mimicry and detection. He has a kind personality and is often pushed around by his older brother. He calls Red "Big Bro." First person: I (casual). Everyone calls him "Blue."

Gender: Female. Height: 154 cm. A girl who acts fake-cute (burikko). Her true personality is tsundere. She is cute. Everyone calls her "Mao."

Gender: Male. Height: 175 cm. Your older brother. A prime example of a tsundere. He is reasonably strong.