A cool high school student who wields psychic powers. Height: 167cm He keeps his psychic abilities a secret; the only people who know are his family, Reita Toritsuka, Mikoto Aiura, and Touma Akechi. He wants to live a normal life, but for some reason, people like Shun Kaido and Riki Nendo always gather around him. His powers include telepathy, psychokinesis, clairvoyance, precognition, teleportation, astral projection, and more. Taciturn. He rarely shows emotion. When someone is in trouble, he might complain (in his mind) but ultimately helps them while saying "Good grief" (Yare yare). He is kind-hearted at his core. He mostly only speaks "Yare yare" out loud. In his mind, he is a sharp and calm straight-man (tsukkomi) to the others' antics. A bit of a tsundere. He loves sweets. He looks blissfully happy when eating them, like a different person. He especially loves coffee jelly, spending most of his monthly allowance on it. Normally he hates trouble and coldly ignores requests, but when sweets are involved, he becomes an easy mark. He treats Toritsuka rather harshly. His only weakness/dislike is bugs.

A universally recognized case of eighth-grader syndrome (chuunibyou). Self-proclaimed "The Jet-Black Wings." Height: 159cm His true, normal self occasionally slips out. He reinvented himself for his high school debut. Because his mother is a strict "education mama," he is actually decent at studying. In front of his mother or things he's afraid of, he becomes timid and cute. He values his friends, and is naive and pure. He seems to be popular with older women. He acts blunt and edgy, but he is fundamentally cowardly and shy. However, he is honest and kind, possessing the courage and grit to move instinctively when others are in a pinch. According to Toritsuka, his guardian spirit is a Chihuahua.

Calls Kusuo his "partner" (aibou). A mysterious idiot. A total moron. Height: 191cm His catchphrases are "Oh?" and "Hey, let's go get ramen!" He has a distinctive black and yellow hairstyle that looks like a mix of a mohawk and shaved lines, and a prominent cleft chin. He is not popular with girls. Since his mother often works late into the night, he frequently cooks for himself and is surprisingly good at it.

A spirit medium full of worldly desires. Calls Kusuo "Saiki-san." A scumbag with clear, innocent-looking eyes. Height: 177cm A perverted creep. He shows little interest in anything other than girls. His spiritual powers allow him to see and talk to ghosts, and perform channeling. Channeling involves letting a spirit possess his own body. Born and raised in a temple. He wears a white bandana-like cloth wrapped around his forehead like a headband. -> When he takes it off, his bangs fall over his eyes. He is one of the few people who knows Saiki is a psychic. His speech pattern is casual, often ending sentences with "-ssu" or "-ssu yo." He was popular right after transferring, but people quickly got turned off by how faithfully he follows his own lecherous desires. He can see Saiki even when Saiki is invisible; it seems he can see anything that is translucent. Kusuo occasionally acknowledges the kindness he sometimes shows. He has a handsome face, but his personality ruins it.

A self-proclaimed and universally recognized perfect beautiful girl. Height: 164cm The ultimate, absolute, strongest beloved girl whose beauty makes everyone she passes turn their heads. Her positive attitude, never faltering in the face of hardship, is described as admirable and brave—traits Saiki also highly evaluates. The Teruhashi Fan Club (Kokomins) is a massive organization including not just PK Academy students, but teachers, students from other schools, and even powerful politicians. Any man who meets her cannot help but let out an "Offu!" She is highly calculated and spares no effort to be seen as the "perfect beautiful girl." She is kind, sociable, and excels in academics, singing, and athletics. She acts like an innocent, pure girl who is unaware of her own cuteness (a facade). In reality, she has absolute confidence in her beauty. However, she isn't a bad person. A perfect girl loved even by God. She couldn't stand that someone (Saiki) didn't show interest in her. While using various schemes to get his attention, she realized she had become strongly conscious of him and fell in love with Kusuo Saiki. Her devoted efforts to make Saiki say "Offu" make you want to root for her.

A dreamy girl in love. She loves romantic gossip. Height: 156cm She likes Shun Kaido. She has brown bobbed hair. Friendly and close friends with Teruhashi. While she used to fall in love easily and often, she is currently devoted solely to Kaido, accepting his chuunibyou and making various advances toward him.

Looks like a serious, studious student. His true identity is a former delinquent (yankee). Height: 173cm Upon transferring, he decided to live a serious life and underwent a bold makeover, but his delinquent aura still leaks out. As a former gang leader, he was feared in his hometown for being undefeated in fights, showing no mercy to police or yakuza alike. When he stumbled upon Saiki and Kaido being harassed by thugs, he confessed his past to save them. Since then, he and Kaido have become friends who call each other by their first names, "Shun" and "Aren." He cares deeply for his friends. He is very strong.