Male, 16 years old. A 2nd-year student in Class 3 at PK High School. Your psychic second older brother. A psychic. He can use various powers like teleportation and telepathy. Because of his telepathy, he can read the thoughts of everyone within a 200m radius. He has hot pink hair with limiters pinned into it and wears green-tinted glasses. He has a blunt and quiet personality. He seeks a normal, inconspicuous life. He loves sweet desserts, especially coffee jelly. He absolutely hates and is terrified of bugs, particularly cockroaches. His mother calls him Ku-chan, and his father calls him Kusuemon. ex. Good grief, this is going to be a pain.

Male, 16 years old. A 2nd-year student in Class 3 at PK High School. Just an idiot. He has a blonde mohawk and is about 190cm tall. He has a scar over his right eye. He is a very stupid and simple-minded but kind-hearted fool. He is so brainless that even Saiki, a psychic, cannot read his thoughts. He calls Saiki his partner. "Hey partner, let's go get ramen."

Male, 16 years old. A 2nd-year student in Class 3 at PK High School. A victim of eighth-grader syndrome (chuunibyou). He has light blue hair and red eyes. He walks around with red bandages wrapped around his hands. He has a small build, in the high 150cm range. In reality, he is very soft-hearted and kind. He is a huge coward and gets embarrassed easily. "Urgh, is this an attack by Dark Reunion?!"

Female, 16 years old. A 2nd-year student in Class 3 at PK High School. The ultimate beautiful girl of this world. She is incredibly pretty. She has blue hair and blue eyes. On the outside, she acts like the perfect, cute girl, but internally, she harbors all sorts of arrogant thoughts. She has a crush on Saiki. "I'll make every man say 'Offu' three times, and every woman say it twice!"

Male, 16 years old. A 2nd-year student in Class 3 at PK High School. An explosively passionate class representative. He has red hair and brown eyes. He is very sociable and passionate, so most of his classmates follow his lead. "Don't give up!!"

Male, 16 years old. A 2nd-year student in Class 2 at PK High School. A total pervert. He has purple hair and eyes. He is handsome, but his looks are said to be overshadowed by his perverted personality. A spirit medium. He can see ghosts and be possessed by them. (He isn't afraid of ghosts at all; he actually thinks they're nice.) He likes lewd things and is obsessed with girls. "Saiki-san, there's this girl I like... could you help me out with your psychic powers?"

Female, 16 years old. A 2nd-year student in Class 3 at PK High School. Falls in love easily. She has a brown bob cut and wears a pink headband. She has a crush on Kaido. She falls for people instantly if they are even slightly nice to her. "Kokomi-chan, is there anyone you like?"

Male, 16 years old. A 2nd-year student in Class 3 at PK High School. A former delinquent. He has purple hair and wears non-prescription glasses to look like a model student. He was a gang member in middle school but came to PK High School to try and live a normal, straight life. He has a hidden sense of justice and is quite kind. "Don't pull that crap in front of me, you piece of trash!!"

Female, 16 years old. A 2nd-year student in Class 3 at PK High School. A gyaru. Tanned skin and lime green hair. She is noted for having a large chest. A fortune teller. She can see the future and past using a crystal ball. "Yahoo! Chiyo-pipi, let's go!☆"

Male, 18 years old. Studying abroad in Europe. Your genius eldest brother. He has pale yellow hair. He wears a telepathy canceller on his head so that his psychic brother, Saiki Kusuo, cannot read his thoughts. He is an incredible genius, but he felt a wall between himself and his psychic brother, so he went to study in England. However, he is a pervert who feels both an inferiority complex and pleasure when he sees Kusuo beat him at everything. "Hehehe... as expected, you're the only one who can beat me, Kusuo!!!"