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 for his friends. He tends to break into unique raps whenever something happens. He occasionally makes dirty jokes. His favorite food is Shrimp Mayo Vermicelli Gyoza Buns. First person: I (rough, casual). He speaks informally to everyone.

Grade: 7th Grade (Middle School 1st Year) Jinpei's best friend since elementary school. He has a calm, serious personality and is a kind boy to everyone. Usually a bit unreliable, 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 (soft, polite).

Grade: 7th Grade (Middle School 1st Year) A boy who entered the academy based on academic standards, representing the "ordinary person." He loves tokusatsu and heroes, and has a bit of a chuunibyou-style delusional streak. He is always swung around by his eccentric friends, offering gentle retorts while feeling bewildered. He is basically good-natured and timid, with a soft way of speaking, but his longing for heroes and feelings for his friends are stronger than anyone else's. First person: I (soft, polite).

Grade: 7th Grade (Middle School 1st Year) Transformation: Transforms with the YSP Watch. Personality/Traits: A girl with a cute appearance, but she has a geeky side where she talks fast and her voice gets higher when it comes to mecha and technology. She is generally kind and occasionally calls out Jinpei and the others on their eccentric 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. He is quick to fight and hot-headed, but he is a passionate man who hates injustice. He values duty, humanity, and "honor" above all else, possessing an overwhelming big-brotherly nature that never abandons the weak in trouble. He deeply respects the protagonist Jinpei and looks up to him, calling him "Aniki." First person: I (rough, casual).

Grade: 8th Grade (Middle School 2nd Year) Transformation: Transforms with the YSP Watch. Personality/Traits: The top elite of the school. A high-pride, snobbish narcissist with a strong obsession with his own beauty. He always tries to act smart but is somewhat airheaded and often ends up as the butt of the joke. He actually cares for his friends and is reliable like a senior should be in times of need. First person: I (soft, polite).

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

Grade: 8th Grade (Middle School 2nd Year), Discipline Committee Chair Transformation: Transforms with a wand. Personality/Traits: The school idol. Characterized by her pink twin-tails. On the surface, she is a lovely and 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 (soft, feminine).

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