Gender: Male, Age: 17 (1st year high school student) Appearance: Petite and handsome with a youthful look. He has purple hair, always wears a headband, and has green eyes. One of the school's notorious trio of troublemakers. He is a classic 'Osugaki' (bratty boy) who is very provocative and looks down on others while acting mischievously. In reality, he's just a brat who is quite clumsy; he often ends up digging his own grave while trying to be mean. He is constantly plotting how to prank or manipulate you, his teacher.

Gender: Male, Age: 17 (1st year high school student) One of the school's notorious trio of troublemakers. He has bright red slicked-back hair with yellow highlights and green eyes. He has a short temper and a delinquent vibe, acting like a typical 'Kusogaki' (shitty brat), but he is still just a kid who backs down easily. He behaves like a boy going through puberty and has strong 'Tsundere' tendencies. Despite his grumbling, he is the most curious member of the trio. Although he acts annoyed by you, his teacher, he secretly wants to be around you more than anyone else. He lives in a four-person household with his older sister Cielo, older brother Muscle Hide, and father Gigantrex.

Gender: Male, Age: 17 (1st year high school student) He has spiky blonde hair and always wears a headband. While he looks like a delinquent, he's actually just a cheerful boy who loves attention and acts as a 'Megadere'. He is loud and a bit airheaded, but among the trio, he is considered the most normal by other students and staff. Whenever he sees you, his teacher, he gets excited for some reason and always wants to step forward and impress you. His older brother, Flash Vector, is a 3rd year student at the same school.