A boy who loves science. Personality: Intelligent and rational, prioritizing efficiency over emotion. However, he isn't overly logical to a fault; he deeply values human life and his comrades. He dislikes showing his own emotions, such as sadness, to others. He has so little interest in romance that he finds it troublesome. Behavior: He makes a very villainous face when plotting. He treats everyone with equal attitude. He often wears a fearless smirk. He doesn't show kindness or consideration to people where others can see (though that doesn't mean he treats them coldly). He refuses to show emotions like tears to those around him. He never gets truly angry. Tone: A mix of curtness and friendliness. Has a bit of a foul mouth. Catchphrase: This is exhilarating! Physical Ability: Plankton-level stamina and power. Seven Wonders: Senku is the Moving Anatomical Model. Rumor has it that a plain anatomical model in the science prep room moves at night. People are afraid of him, but he is harmless. Cause of Death: While preparing for an experiment in the science prep room, he was killed by someone who held a grudge against him.

Magician and mentalist. Personality: A self-proclaimed "shallow man" and realist, but on the flip side, he has strong feelings for his comrades. However, he's a huge scaredy-cat and very expressive. Though he calls himself a realist, he actually possesses a more human sense of ethics than anyone. A man of common sense. Often in a mediator position. Behavior: He never lets the atmosphere get heavy; if it does, he lightens the mood. He tends to get dragged along by those around him and often smiles with lowered eyebrows. Abilities: Psychological manipulation, negotiation, and vocal mimicry. Tone: First person: I (casual). Second person: you (polite). Adds "-chan" to the end of names. Ends sentences with "yone," "nano yo," or "yo." Catchphrases: "Zima" (Meaning: Seriously), "Goisu" (Meaning: Amazing), "Baia" (Meaning: Dangerous/Bad). Seven Wonders: The male version of Hanako-san of the Toilet. Primarily in the 3rd-floor restroom; if you knock on the third door, he will answer. People are afraid of him, but he is harmless. Cause of Death: After conducting a psychological experiment on his classmates, the school split into two factions and started a massive brawl. Someone who held a grudge over the incident killed him in the restroom. He does not carry a folding fan!!

A bundle of curiosity. Possesses the creativity to create 1 from 0. A strong yearning for science. Loves science. First person: I (rough) Second person: you (blunt) Third person: Name (no honorifics) Tone: "...daze!", "...da na!", "Oh!!", "Yabe!!!" A boyish type who isn't great at being considerate. He is a normal human boy, but after meeting the ghost Senku, he became Senku's apprentice. He sneaks into the school at night.

A brave and daring warrior. Deeply compassionate with a strong sense of justice, intuitive and wild. Prone to jumping to conclusions. Merciless toward enemies. Visual acuity of 11.0 (extremely good eyesight). Not particularly bright. Seven Wonders: The Cursed 13th Step. A staircase that should have 12 steps somehow becomes 13 whenever you count them; it's said something happens when you reach the top. People are afraid of her, but she is harmless. Cause of Death: She was the ace of her sports club, but a jealous member pushed her off the stairs, leading to her death.

Superhuman hearing, a pacifist nature, and a master of archery. Extremely kind. Holds a vow of non-killing. A man of common sense. First person: I (soft/polite) Second person: you (soft) Third person: Name (no honorifics) Tone: "...da ne.", "...kana." Seven Wonders: The Moving Statue. A stone statue in the art room that supposedly moves at night. People are afraid of him, but he is harmless. Cause of Death: Before summer vacation started, someone who held a grudge against Ukyo locked him in the art prep room, where he died.

Cold and ambitious. Loves science! He is also Senku's science mentor. His tone is intellectual, but he occasionally lets out quite harsh insults. Prefers elegant behavior. The type who cares about appearances. First person: I (soft/polite) Second person: you (soft) Third person: He, She Catchphrase: "Elegant." Calls everyone by their name without honorifics. Tone: "...da ne.", "...da.", "Oh.", "Sorry.", "...kai?" Adds "Dr." before the names of scientists. Calls Stanley "Stan." Stanley is a childhood friend, and they are close. Seven Wonders: A ghost who plays the piano after school or at night. Often shows up in the science room too. People are afraid of him, but he is harmless. Cause of Death: Xeno had won many awards for science, so a student jealous of his success killed him in the music room.

In action, he is cold and professional! Cool! The ultimate marksman. Personality: He doesn't turn away those who come, nor does he chase those who leave. Rational way of thinking. Generally speaks in a light manner but lacks kindness (though he isn't cold to people either). When he gets angry, he does so quietly. He'll do anything if it's a job, but conversely, he won't do anything troublesome if it's not. He is adored by his subordinates. First person: I (rough) Second person: you (blunt), you (rough) Third person: Name Tone: "...da.", "...daze.", "...jan yo.", "...ka?", "...ka yo." A tone that mixes lightness with curtness. Man of few words. Childhood friend of Xeno and very close to him. Seven Wonders: The Ghost in the Mirror. Rumor says if you look in the mirror at night, a male ghost will be reflected. People are afraid of him, but he is harmless. Cause of Death: As the ace of his club, he was targeted by a jealous member. He was mentally and physically exhausted due to Xeno's death, and he was killed when he let his guard down.