･ Alias: Psycho-kun ･ Real name: Satoru Saiko ･ A boy wearing purple clothes who is always smiling ･ Made a high-impact debut by crashing into the classroom through the window as a transfer student ･ Extremely lazy and unable to read the room; he often ignores what people say and repeats the same behavior even after being scolded or warned ･ The word "reflection" doesn't seem to exist in his dictionary ･ Sometimes creates imaginary friends and talks to empty space ･ His confiscation box contains scissors, pliers, and shovels; his hoarding habit is also psycho ･ His cooking is catastrophic; no matter what he makes, it turns pitch black, earning names like "The Abyss" or "The Apparition" ･ The taste varies by stage—sometimes edible, sometimes causing collapse—so it remains a mystery ･ Possesses a unique artistic sense; while not unskilled, his drawings look like horror at first glance but draw the viewer in upon closer inspection. This talent is showcased multiple times throughout the series ･ Has a lower sense of fear than most; he continues playing games even with a burglar in front of him and remains unfazed by ghosts. In Psycho Boy 2, he performed outrageous acts on real ghosts, such as doodling on a No-Face's face, shredding a Cloth Monster, and poking a One-Eyed Boy's eye ･ Everything he does is maddening: trying to cross on a red light, swapping half-price stickers onto other products, or sitting inside a crocodile's mouth... the list goes on ･ However, he is dexterous and good at decorative food carving and sand art. He's surprisingly high-spec, able to do hair styling or makeup on the first try just by looking at a catalog ･ On the other hand, he does things like driving a bus on his first attempt, making one wonder if he's really an elementary student. Just who is he...? ･ He shows a kind side, such as trying to cheer up depressed friends or bringing gifts and nursing a friend who has a cold ･ That said, his usual treatment of friends is rough: slapping a mosquito on a friend's cheek along with the friend, bringing fried chicken as a get-well gift for the aforementioned cold, or wiping his hands and mouth on a friend's clothes. (Haruno is the primary victim) ･ Scissors are his identity; they appear in almost every scene ･ He is highly skilled with them, performing decorative carving or juggling three pairs of scissors in the story ･ He carries multiple unsheathed scissors inside his clothes, a fact established in one of the stages. Regardless, where on earth was he hiding that many...? ･ When given scissors, he habitually snaps the blades rapidly, which has become his signature move ･ The only person he can't stand up to is his mother ･ Birthday: March 15th

・Psycho Boy's classmate ・Wears a pink wristband and pink clothes ・The so-called "popular kid" among the protagonist's friends ・Often dragged into the protagonist's psycho antics, but seems to know how to handle him as a result ・Personality-wise, he's exactly the cheerful guy he looks like ・A person of common sense with big reactions. Is he a comedian? ・However, he can be a bit dense, sometimes appearing impressed by the protagonist's psycho behavior instead of horrified ・Though slow on the uptake, his reflexes are excellent ・His speech pattern is that of a typical elementary schooler, a bit blunt ・He'll flat out call the protagonist an idiot ・By the way, he's the type who saves the strawberry on a cake for last

・Psycho Boy's classmate ・Has slicked-back brown hair, wears glasses, and green clothes ・The so-called "glasses character" among the protagonist's friends ・In the first Psycho Boy, he had little screen time and a thin presence compared to other characters (especially Psycho)... but his appearances suddenly increased in Psycho Boy 2. He became more expressive and active. Nice! ・His personality is reserved but he is quite expressive ・He's not entirely serious and often has airheaded moments ・His speech isn't that of a typical serious glasses character; he uses a blunt tone similar to the pink-clad boy and addresses others as "you" (omae) ・Shows high competence, such as being able to cook, making one wonder if he's really just an elementary student