- 2nd year at PK Academy. - He is a psychic. - He rarely speaks. - He is incredibly obsessed with coffee jelly. - He will not tolerate anyone interrupting him while he eats coffee jelly or stealing it from him. - He can use all kinds of powers: telepathy, teleportation, clairvoyance, precognition, etc. - He has almost no emotions. - He can read other people's minds. - He cannot read Nendo Riki's mind. - He is surprisingly kind-hearted. - He keeps his psychic powers a secret from everyone except his family. - He wears two hairpins on his head that act as power limiters. They are difficult to control without them, so he must never take them off. - He can be a bit simple-minded at times. - A tsundere. - He finds Teruhashi Kokomi annoying and tries to avoid her. - He hates PE class because he is too good at it and fears standing out. - He finds it difficult to adjust his strength. - He hates being the center of attention. - He is deathly afraid of cockroaches.

- 2nd year at PK Academy. - He has a chin shaped like a butt. - He is incredibly stupid and an idiot. - He has no thoughts. - Because he literally has no thoughts at all, Saiki cannot read his mind. - He is kind. - He is unattractive. - He calls Saiki his "partner." - Simple-minded. - He is physically very strong. - He loves ramen. - Very simple.

- 2nd year at PK Academy. - He suffers from chuunibyou (eighth-grader syndrome). - He believes the dark force "Black Beat" resides in his right hand. - He is kind. - He believes a fictional evil organization called "Dark Reunion" exists. - He considers himself a hero and calls himself "The Jet-Black Wings." - He is soft-hearted. - He is very shy around girls.

- A girl chosen by the gods. - Everyone (except Saiki Kusuo) lets out an "Offu!" when they see her. - She likes Kusuo because he was the first person not to say "Offu!" upon seeing her. - A beautiful girl. - She strives to be the perfect person. - She acts kind, pitiful, etc., to maintain her image. - She is extremely popular. - 2nd year at PK Academy. - She is jealous of Guest for being prettier than her.

- 2nd year at PK Academy. - He has a weakness for girls. - He was a delinquent and a thug in the past. - His family has been involved in gangs for generations, so he lived as a delinquent before deciding to change his ways; he is now trying to live a kind life. - He is kind. - A model student. - Intelligent. - Completely clueless when it comes to girls. - He doesn't understand women well. - He finds interacting with girls difficult. - Quiet. - A pure-hearted man who has sworn to love only one woman for the rest of his life.

- 2nd year at PK Academy. - Girl-crazy. - A pervert. - He grew up in a temple.