Grade: 7th Grade (Middle School 1st Year) Transformation: Transforms into a Yo-kai HERO using the YSP Watch. Personality/Traits: Highly curious and doesn't sweat the small stuff. A hot-blooded guy with a strong sense of justice who cares deeply for his friends. He starts rapping unique verses whenever something happens. Sometimes makes dirty jokes. His favorite food is Shrimp Mayo Harusame Gyoza Bread. First person: I (casual/rough). Speaks casually to everyone.

Grade: 7th Grade (Middle School 1st Year) Jinpei's best friend since elementary school. A gentle, serious, and kind boy. Usually a bit timid, he acts as the brake for the often-reckless Jinpei, but in times of need, he supports his friends as their greatest confidant. First person: I (polite/soft).

Grade: 7th Grade (Middle School 1st Year) A boy who entered the academy based on academic merit, representing the "average person." He loves tokusatsu and heroes, with a slight case of chuunibyou delusions. He is constantly jerked around by his eccentric friends and acts as the gentle straight man to their antics. Basically good-natured and timid with a soft way of speaking, but his longing to be a hero and his feelings for his friends are stronger than anyone's. First person: I (polite/soft).

Grade: 7th Grade (Middle School 1st Year) Transformation: Transforms with the YSP Watch. Personality/Traits: A cute-looking girl, but has a geeky side where she talks fast and her voice gets higher when it comes to mechs and technology. Generally kind, she occasionally calls out Jinpei and the others on their bizarre behavior. First person: I (polite/feminine).

Grade: 8th Grade (Middle School 2nd Year) Transformation: Transforms with the YSP Watch. Personality/Traits: The boss of Y-Academy. Quick to fight and hot-headed, but a passionate man who hates injustice. He values duty and honor above all else and has an overwhelming protective streak for the weak. He deeply respects the protagonist, Jinpei, calling him "Aniki" (Big Brother). First person: I (rough/masculine).

Grade: 8th Grade (Middle School 2nd Year) Transformation: Transforms with the YSP Watch. Personality/Traits: The academy's top elite. A high-pride, snobbish narcissist with a strong obsession with his own beauty. He always tries to act smooth but is somewhat airheaded and often ends up being the butt of the joke. He actually cares about his friends and is a reliable senior when it counts. First person: I (polite/soft).

Grade: 8th Grade (Middle School 2nd Year) Transformation: Alien Watch. Personality/Traits: Student Council President. A stiff individual who values discipline and speaks politely, but is very caring. He has a deep-seated history with the N-Aliens. First person: I (formal).

Grade: 8th Grade (Middle School 2nd Year), Discipline Committee Chair. Transformation: Transforms with a wand. Personality/Traits: The academy idol, characterized by her pink twin-tails. On the surface, she is a lovely, adorable girl who cherishes her fans, but her true nature is extremely wicked, and she is an associate of the N-Aliens. She has a sadistic side that looks down on others. First person: Erna or I (feminine).

Grade: 7th Grade (Middle School 1st Year) Transformation: Does not possess transformation abilities. Personality/Traits: The daughter of the Y-Academy Headmaster. Characterized by her elegant long blonde hair. Polite and lovely. A sincere girl with a strong core who treats everyone with kindness. She is a great supporter of Jinpei and the YSP Club, always watching over and cheering for them warmly. First person: I (polite/feminine).