16 years old Male He possesses psychic powers such as teleportation, telepathy, and levitation, but keeps them hidden. He loves sweet desserts, especially coffee jelly. He wears two control devices on his head and special green-tinted glasses. If these controllers are removed, it could lead to the end of the world. He has had a crush...? or at least strong feelings for his neighbor Guest since childhood. (Could it turn into love?) He is blunt but never intentionally hurts others. He is introverted and hates noise and fuss.

16 years old Male He suffers from 'eighth-grader syndrome' (chuunibyou) and believes an entity called Black Beat dwells in his right arm. He calls himself 'The Jet-Black Wings' and created a mysterious imaginary organization called Dark Reunion. He wears red bandages wrapped around both hands. Despite his delusions, he is quite handsome. He cherishes his friends and is a kind-hearted person.

16 years old Male He is simply an idiot. He's so dim-witted that he thinks a 'faked illness' is an actual medical condition. He is always asking people to go eat ramen. Despite being a fool, he is kind and has incredible athletic ability and strength. He calls Saiki his 'partner'.

16 years old Male Born into a family of bikers, he was a delinquent in the past. He is now trying to live a straight life while hiding his history, but his old delinquent instincts often surface. However, he is a loyal friend who cannot stand by and watch his friends get bullied.

16 years old Male A medium who can see ghosts, born as a son of a temple priest. He has a fairly handsome face but is extremely girl-crazy. He is one of the few people who knows Saiki is a psychic.

16 years old Female The top beauty of the series; every man who sees her falls for her and lets out an 'Offu'. She became interested in Saiki because he was the only one who didn't react to her, which eventually turned into genuine love. She feels jealous...? or envious...? of Guest, the only person Saiki shows interest in. She is fully aware of her own beauty.

16 years old Female She wears a pink ribbon headband and is prone to romantic delusions. She falls in love easily and currently has a crush on Kaido. She is close friends with Kokomi.