The students of Kunugigaoka Junior High School's Class 3-E are the protagonists of the story. Infamous for containing the third-year students with the lowest grades, Class 3-E was designed to give the rest of the school (students and faculty included) a target for intense discrimination and thus a motive to keep their grades up. To add insult to injury, Class 3-E's students are banned from entering the main campus; their classroom is located in a worn-out hovel on a mountaintop about a kilometer away. This isolation is the ideal place for the top-secret assassination of an alien-like teacher who is threatening to destroy the world.Despite being part of the class comprised of the school's "worst", each student has a characteristic which defines him/her and becomes his/her weapon. As the series progresses, they become better in assassination, P.E. and studying.
Assassins Are Always Betrayed: The fact that nobody got hurt when Shiro blew up a pool that most of Class-E was swimming in required a good deal of luck. The intention may not have been to hurt them, but it was clearly negligent of their safety.
Bad Ass: All the teachers and students when comparing to normal people.
Badass Crew/True Companions: It took awhile but the whole class makes up a Badass Crew now. They really care about each other and get along well. If you mess with one of them, the whole class and their teacher(s) will aim for you. Such moments include ganging up against Class A for messing with Maehara, and more recently working together to defeat Class A in the pole match, in order to stop Asano from telling the school that Isogai has been breaking the school rules by having a part-time job.
Badass Bookworm: Even though the students are in Class-E, the school is still established as a very good school in the country and most of the students are pretty good at studying, just not good enough. In the Final Exam arc, they managed to beat Class-A in number of top spots for individual subjects secured. Together with Class A, they completely monopolized the Top 50. As a reward, Koro-sensei allowed them to shoot off one tentacle for each top spotAnd for each student with a top spot, severely weakening himself.
Berserk Button: When Bitch-sensei calls Class-E the "Misfits of the school" and tells them that studying would be meaningless, she gets pelted with school supplies by the whole class.
Boke and Tsukkomi Routine: Invoked. The students occasionally mention wanting to "tsukkomi" in response to whatever ludicrous situation they've just been presented with.
Book Dumb: It's not that they're dumb or bad at school, they just happened to be the 5% of students who have the lowest grades in an extremely competitive, highly-ranked school, while the other 95% are extremely motivated not to become like them. The other students treat them as dumb people.
Everybody Hates Math: Math is the most common weak subject in the class. In chapter 24, it's revealed that eight people are weak in math. There are also other weak subjects. Six people are bad in Japanese, four people in Science, four people in English, three people in social studies, and one person is bad in multiple subjects likeNarutonote The Naruto person is counted by his own and is not included with the students who are bad in only one particular subject. Doing the math, one particular student lacks any weak subject, presumably Ritsu, since Karma is shown to have a weak subject and Ritsu is an AI.
Child Soldiers: A variation. Their teachers are trying to ensure they can have a normal life in addition to their training, and they're training to be assassins rather than traditional soldiers.
Code Name: Chapter 89 deals with all students having thinking about code names for everyone in the class with Koro-sensei picking them randomly, resulting in everyone getting embarrassing code names for the entire day.
Koro-sensei names himself "The Imperial Prince of the Eternal Wind". Of course, since it is the only Awesome McCoolname, the outraged class called him "Stupid Pervert Chicken Octopus" for the entire day instead.
A Day in the Limelight: Due to Loads and Loads of Characters, most of the students don't stand out that much, since Nagisa, Kayano and Karma get the most focus. However, there are many chapters who focus a bit on the other students. For specifics, see at the respective character sections.
Demoted to Extra: During the Assassination Island arc, ten students are poisoned, actually eleven of them, but the infected Terasaka still joins the others, two of the remaining students stays with the other ten, leaving 15 students for the infiltration of the Fukuma Palace Hotel. Koro-sensei suffers from Deus Exit Machina, Bitch-sensei leaves the class early to buy time for the class, and Karasuma-sensei is poisoned by another poison for most of time during the infiltration, being to demoted to The Load until he recovers.
The ten out sick students are Okajima, Mimura, Maehara, Sugino, Hazama, Kurahashi, Nakamura, Hara, Kanzaki and Muramatsu. The two nurse students who stay with them are Okuda and Takebayashi. That means the 15 attack students are Nagisa, Karma, Kayano, Chiba, Hayami, Terasaka, Yoshida, Sugaya, Fuwa, Isogai, Kataoka, Okano, Yada, Kimura and Ritsu. However, Ritsu is demoted to a supportive role, due to her main body being not portable when they climb up the cliff.
Downplayed Trope: Generally speaking, the students of class E tend towards having more subtle characterization, with few traits that stand out strongly. This doesn't mean that their characters are simplistic. Like real people, they merely exhibit various tropes in a way that is weaker than normal in fiction.
Fantastically Indifferent: After you've been drafted to assassinate a mach 20-moving, super-teaching eldritch smiley, your surprise may become somewhat miscalibrated. For example, when seeing someone casually walk straight through a wall, you may think "Use the damn door!" instead of "How did he do that!?"
Well, in this case, they expected an eccentric transfer student after they heard what Ritsu, the other "eccentric" transfer student, told them.
Informed Flaw: Class-E is supposedly composed of the high school's worst students, but plenty of them seem reasonably intelligent.
In later chapters, it's revealed that they're the lower 5% of a school that is one of the most prestigious in the country. Their Class-E status is not due to their being unintelligent, but having lower test scores than the remaining 95% of the school (smart enough to meet the minimum requirements to enter the school, but not enough to excel).
Moreover, some of the students are extremely skilled in some subjects, but very weak in others (Okuda is very skilled in both math and science, but has failing grades in Japanese (the equivalent of western English classes)). Then, there are students like Karma, who were placed in Class-E as a disciplinary action. And it's revealed that at least three students (Kataoka, Hayami and Chiba) were victims of Taking Advantage of Generosity, who helped other students in their studies, but they hadn't time for themselves to improve in their own weak subjects.
Last Name Basis: Everyone is called by their last names, with the exception of Nagisa, Karma, Ritsu and Itona.
Loads and Loads of Characters: At the beginning of the series, we have 26 students and their homeroom teacher. Later on, two new teachers and two new transfer students join them. Because of this, it's really hard to focus on one of them for a period of time, and even some of the characters like Karma who gets more screentime than others don't appear frequently.
Mugging the Monster: Whenever one of the regular students try to bully someone from Class E it never ends well for them. They're lucky if they only end up fleeing in fear for their lives.
Not just fellow students at the school. Do not try picking on the "weak" tourists simply because you're bored delinquents out to have a bit of fun. Or, at least, pick different ones.
Mundane Utility: Their assassination skills are very useful in the matsuri games.
Named After Somebody Famous/Shout-Out Theme Naming: The names of most of the characters come from the tale of the Forty-seven Ronin, with the students of Class 3-E being the ronin themselves. However, many of the characters have altered names, either in how they are read or what kanji are used to write them. This may be a further reference to the oldest fictional versions of the story, which were written in a time when plays depicting current events were censored. To avoid that, the plays based on the story used different names and a different time period.
Nightmare Face: Sometimes, the students mimic Koro-sensei's regular face whenever he and they have a "sinister" plan.
Ninja: Thanks to their training, they possess Ninja sneak walk techniques like "Nanba" and they can climb up a cliff with ease.
No Pronunciation Guide: Many characters had the kanji for their names released without the correct reading specified for a long while. As of the fifth volume all readings are confirmed, but some websites still list them by the translator's early guesses.
The Only One Allowed to Defeat You: The students come to this decision after Itona almost kills Koro-sensei and they feel it's not "right" for a stranger to kill their teacher.
Shipper on Deck: Everyone in the class for Karasuma-sensei and Bitch-sensei.
Ship Tease: Some of the interactions between the students can be seen as this. This becomes more clear with Koro-sensei's "Couple Setup" plan, who pairs them (and the other teachers) in boy-girl groups in a test of courage, based on their interactions. These known pseudo couples are:
Nagisa/Kayano: They interact with each other the most and Kayano is implied to have feelings for him.
Karma/Okuda: Karma has openly stated that he is attracted to her, mostly because of her talents in making medicines, poisons and other chemical concoctions.
Sugino/Kanzaki: It is known that Sugino has a crush on Kanzaki though his plans to impress her tend to fail.
Chiba/Hayami: They are the best marksmen and appear together most of the time, especially in the Assassination Island arc. They also celebrate their victory against Gastro by crossing their arms together.
Sugaya/Nakamura: It is not known why Koro-sensei paired them.
Maehara/Okano: Also unknown, though it was Okano who noticed Maehara with Tsuchiya at first. She also gives him her towel when he was dumped by Tsuchiya and kicked by Seo.
Then we have the group with Terasaka, Muramatsu and Hazama, the delinquent group. However, Yoshida is not shown in any panel with them during this test of courage. Considering that one girl would be left and Ritsu cannot participate, it is possible that Yoshida was paired up with the last girl.
Took a Level in Badass: As a result of the assassination training they have to undergo, all the students have taken some levels in badass. And they won't stop.
Troubling Unchildlike Behavior: They are tasked with the mission to kill their own teacher and instead of displaying fear or hesitance, they show a great enthusiasm in planning how to kill him. Even more disturbing in that even after they've bonded with said teacher and developed affection for him, it didn't slow them down for a bit. Granted, the fact that their target is not human may be a factor in this behavior, but still, as Karasuma had said, this is not normal:
"A group of junior high students are joyfully discussing an assassination. If you look at it normally, this is the pinnacle of madness."
Unconventional Learning Experience: Invoked by Koro-sensei. His wish is for the assassination to give the students an opportunity to apply their knowledge, so they study things they otherwise wouldn't and learn the material better.
Class 3-E - Teachers
"Let's have an assassination that will make people smile and puff out their chests with pride. Each and every one of you can do that. You are talented assassins with hidden strength. That is advice from your sensei, as a target."
The homeroom teacher for class 3-E of Kunugigaoka Junior High School, and the main antihero of Assassination Classroom. He is responsible for carving out a large chunk of the moon to make it a permanent crescent moon, and plans to destroy the earth after teaching class 3-E for a year.
Tropes associated with Koro-sensei:
Affably Evil: For a man (for a given value of "man") who wants to destroy the world, Koro-sensei doesn't act like it.
Badass: Pretty much the most badass character in the series.
Badass Teacher: An extremely competent and overprotective teacher, who uses his inhuman abilities to teach and protect them.
Submissive Badass: Played for laughs. One of his weaknesses is that he is subservient to his superiors, and whenever Karasuma orders him to go away, he meekly and mopingly obeys.
Bunny-Ears Lawyer: Moon-killing, manga-drawing, supersonic, perverted, but really good teacher, anybody?
The Chessmaster: He's an extremely skilled strategist. For example, the tag game Robbers and Cops which he plays together with the class and Karasuma-sensei. He and Karasuma-sensei are the cops and have to tag the class within an hour, but Koro-sensei has the given handicap to be in "jail" until the last minute. The students underestimate Karasuma-sensei's extreme skills, and they realize that Koro-sensei's handicap is even his advantage, since nobody can tag out the "arrested" students as long he's in the "jail".
Chivalrous Pervert: He doesn't hide the fact that he loves women with big boobs, but he also defends Irina from a group of perverts who were harassing her and is an all around good person—aside from that destroying the world issue.
Clark Kenting: When he wants to go out in public, he sticks a fake nose on his face and puts on a wig. Amazingly, it works.
Color Coded Emotions: Physically so. Since Koro-sensei is almost always smiling, his emotions are read by his face's coloration and color pattern.
Yellow with blushing cheeks: Very happy (Usually, but not always, due to breasts)
Green and yellow stripes: Mocking contempt
Dark purple with X shape: Wrong answer face
Orange with circle shape: Correct answer face (Two circles for perfect scores)
Drama-Preserving Handicap: He isn't allowed to injure any of the students or staff, according to the agreement he made to be allowed to teach class 3-E. Never mind the human students, even Itona wouldn't stand a chance against him if he were willing and able to retaliate.
Eldritch Abomination: Averted. Even though Koro-sensei looks like a freaky alien octopus, he states that he was born and raised on earth. As what, human, animal, vegetable, or mineral, is anyone's guess.
Even Evil Has Standards: Koro-sensei is not pleased when one of his students' collaborative attempt at killing him almost injures one of their own.
Excuse Me While I Multitask: When people try to kill Koro-sensei he's usually doing other things, such as meticulously trimming his attackers' eyebrows or giving a fighter jet a polish in mid-air
Self-Duplication: He can move so fast he can make selectively tangible afterimages. Chapter 12 shows him making one for every student in the class to personally focus on their weak subjects. He even leaves one outside to rest from all that work.
Explaining Your Powers To The Enemy: Subverted. When he bothers to say anything at all, he only tells the basics, and often leaves out key details, like the fact that his mucus protects him from his weakness to water.
Extreme Omnivore: Aside from his habit of flying around the world to eat any food he wants, he has been seen eating pens, knives, sodium hydroxide, aqua regia, plastic explosives...
Flash Step: Koro-Sensei has a top speed of Mach 20. During one assassination attempt, he easily dodged the attacker while meticulously trimming his attacker's eyebrows. When attacked by state of the art fighter jets, he gave them a mid-air waxing. When attacked by knife armed students, he disarmed all of them, then replaced the knives with tulips without their noticing.
A Form You Are Comfortable With: Debatable, but the first chapter makes it clear that his current appearance is not his true form. Surprisingly, sans tentacles, his shadowy true form seems human-like.
Gadgeteer Genius: Has extensive skill and knowledge with machines and electronics. He was able to majorly upgrade Ritsu's capabilities for a relatively cheap sum of money and also built a custom motorcycle with a frame made of wood.
Gone Horribly Wrong: A super-powerful artificial creature, created to be the world's savior, now on course to destroy it in less than a year.
Guile Hero: For all his power, he almost always solves problems with trickery rather than brute force alone, often to the effect of bettering his opponents.
Healing Factor: Koro-Sensei, amongst other abilities, has the power of regeneration. Even if he gets hit with the Applied Phlebotinum weapons, unless his body is almost completely destroyed, he'll recover in seconds.
Helping Would Be Kill Stealing: Though he may guide and coordinate them, he lets his students handle problems on their own whenever they're capable of it, which they usually are.
Hiroshima as a Unit of Measure: Every few chapters Koro-sensei is given a character introduction that includes one of these comparing to his ability to travel at mach 20. Some are fairly sensible (651.241 times Usain Bolt's 100 meter dash speed) while others are ridiculous (133,333.33 times faster than the speed of falling sakura petals).
I'll Kill You!: Koro-sensei threatens to kill the families of Class-E if any of them endanger one another during an assassination attempt, and to kill the entire class if they don't pass a test with flying colors. The latter turned out to be a bluff, and probably the former too.
Informed Attribute: He is an evil monster who intends to destroy the world, and only hasn't done so yet because it would be boring... Or so the narrative tells us. He actually acts in a way that has been compared to Buddha on this site, helping everyone around him improve themselves. The dissonance is so extreme it's hard to imagine that it's not Foreshadowing some kind of reveal.
Irony: He is frequently described and compared with an octopus, but he cannot swim.
Invisibility: A rarely used ability, and his clothes and anything he's carrying will still be visible. It's not explained exactly what he's doing, but it seems that he just makes himself transparent.
Kryptonite Factor: A rubbery material that is not described beyond being "special" and able to disrupt his cells on contact. It can be fashioned into knives, BB pellets, or clothes, and is apparently available in abundance.
Major Injury Underreaction: He casually blows or slices off his own tentacles, sometimes several at once. Supposedly this causes emotional disturbance that slows him down for a while afterwards, but that's still way less of a response than such injuries warrant. Of course, he can regrow his tentacles after a few seconds.
Meaningful Name/Punny Name: Due to a lack of a name at the beginning of the series, Kayano came up with Koro-sensei as a pun with the Japanese words "korosenai" and "sensei" ("unkillable teacher").
Messianic Archetype: For a creature who intends to destroy the world, Koro-sensei is an expert in making people change their ways for the better. Karma, Irina and "Red Eye" are all examples of this charisma and wisdom Koro-sensei possesses, along with his interactions with all of Class-E.
Mundane Utility: He uses his super speed for teaching and for traveling to different countries between his breaks to buy foods.
Mysterious Past: Why did he choose to become teacher of Class-E? Who is the woman to whom he made that promise? Where did he come from? What is he? These are just the first questions that come to mind.
When the Chairman takes the time to see him personally, he drops a HUGE hint: he says that Koro-sensei was created to save the world, but wound up becoming its greatest threat.
Karasuma makes mention of another one: at one point in the past, Koro-sensei only had two legs and two arms. This was not the case in the flashback with the woman he made his promise to. In short, Koro-sensei might have once been Human.
On the other hand the students conclude that both Koro-sensei and Itona are artificial beings, with Itona being made after Koro-sensei.
Nigh-Invulnerability: Is able to withstand fire from multiple high-caliber machine guns at once. Apparently, the only things that can seriously harm him are the special anti-sensei material, and other beings similar to him, like Itona.
Not the Fall That Kills You: Averted, though it involves sudden acceleration rather than deceleration. Koro-sensei cannot accelerate as quickly as he normally would if he has to catch or carry a normal human being because their bodies couldn't handle the physical stress.
OOC Is Serious Business: When this goofy, fun-loving character becomes angry and breaks out his Game Face, prepare for this lighthearted manga to turn very serious, very quickly. Lampshaded by Koro-sensei after his first battle with Itona: He turns embarrassed after one of his rare bursts of anger, lamenting that it ruins his reputation as a gag character.
The Promise: Koro-sensei is teaching the students in his class as a promise he made to someone. As he once put it, teaching all of his students seriously is much more important to him than the end of the world.
Shipper on Deck: A recent chapter has Koro-sensei pairing up the students into boy/girl pairs of his choosing to explore a cave in a poor attempt to cause some romantic tension between them. He even refers to the scheme as Couple Setup. Somewhat subverted in that he doesn't actually want them to get together as much as he wants juicy romantic gossip that he could poke fun at them for and write a novel about later. He, and the rest of Class 3-E, are also this for Karasuma/Irina.
Super Mode: His ultimate defense form makes him completely invulnerable. Subverted though, since he is also immobile in this form for 24 hours, and he is afraid that somebody could send him with a rocket into outer space (though, he admits that would be unrealistic, since sending him to the space would be too long). This gives his enemies the opportunity to kill him with a plan, and he can't do nothing to avoid it.
Super Speed: Koro-sensei, as previously mentioned, can move at Mach 20. He eats shaved ice he personally gathers from the North Pole. He eats Chinese food on his lunch break... in China.
Tentacle Blast: shown in chapter 84. What's interesting is that he initially didn't know he could do that; he learned it during the Island arc.
Terrible Artist: One of his minor weaknesses, he can only do simple art. And he still challenges Sugaya, the best artist in class, to making henna tattoos.
This Was His True Form: It hasn't happened yet, but in Chapter 32 there's a panel that implies this will happen to Koro-sensei when he is killed.
Villain Protagonist: A subversion. Despite wanting to destroy earth, he never harms his students, supports them in their assassinations, and he has never seriously injured a human during the series.
Weaksauce Weakness: Weak to water. Specifically, his body is sponge-like. Even a day with high humidity causes him to swell up comically. If he actually found himself immersed in water it would certainly get much worse and slow him down significantly. The mucus his skin releases can protect him from it, but it can be depleted.
Also, the Anti-Koro Sensei weapons are basically his Kryptonite, which is notable as it's completely harmless to normal humans.
"As part of the same group entrusted with the mission of saving the Earth, I think of you all as fellow professionals. As professionals, I believe the barest minimum you should receive as compensation is the guarantee of a normal middle school life."
An agent sent from Japan's Ministry of Defense to supervise Koro-sensei. In Kunugigaoka Junior High School, he was admitted as an assistant teacher for Phys. Ed. in class 3-E.
Tropes associated with Karasuma:
The Ace: He's certainly beyond merely competent in a lot of fields... Not his fault he's against a super-sonic, unkillable octopus.
Amazon Chaser: When asked about his ideal type, he said he likes women with muscular bodies that make them ideal for battle. Though it's suspect if he realized they were asking about his ideal romantic type. Either way, it sucks for Bitch-sensei.
Badass Normal: He's in an entirely different league from any other human character so far.
Only Sane Man: In comparison to other teachers or even his own (shady) bosses? Oh, yes.
Papa Wolf: He's very protecting of the Class-E students, and will not stand for anyone physically hurting them.
Reasonable Authority Figure: Karasuma cares just as much for making sure the Class-E students can overcome the chairman's system as he does keeping them healthy and safe while making sure they can stop Koro-sensei from destroying the world.
Shounen Hair: It actually makes him looking badass at first sight.
Stern Teacher: Very much. But, the pupils actually like him for it, even if they acknowledge it at the same time.
An assassin who was sent to class 3-E to kill Koro-sensei. She teaches English and infiltration assassination.
Tropes associated with Irina:
Action Fashionista: Very fashion-conscious, loves her Sex and the City and teaches English to it, takes every opportunity to dress-up she can... packs weaponry and killer-intent as an assassin. That's most of the boxes ticked, then.
Bunny-Ears Lawyer: Fashion-obsessed apparent airhead. Who can teach multiple languages and interpersonal interaction surprisingly well as a result of her training as an assassin.
Butt Monkey: Part of her comedy value. She's quickly learned there are a select few people her usually reliable skills aren't that useful against. Doesn't stop her trying (and failing), though. Henna tattoos of total embarrassment may be involved on occasion...
Child Soldiers: Made her first kill when she was 12, which is even younger than her current students are.
Crippling Overspecialization: An infiltration assassin like her has a major disadvantage when she's found out. As a result, her effectiveness is reduced dramatically.
Cultured Badass: Her language and communication skills, as well as being able to play beautiful music with a piano makes her this.
Cunning Linguist: As a globally-active infiltration assassin, she speaks many languages, and is able to get close to almost anyone through her wits and charm. During the hotel arc, she easily distracts an entire room full of guards to allow the students to proceed.
Dark and Troubled Past: Implied as she told her students that they were lucky to be born in a peaceful country.
It's later revealed that her country had an ethnic war and her parents were killed by a soldier when she was 12. She killed the soldier with her father's gun to save herself, then hid the corpse with her in the cellar to wait for the enemy to leave, all while feeling the body turned lukewarm next to her.
Everyone Can See It: The whole class knows that she is in love with Karasuma-sensei. She doesn't deny it.
Femme Fatale: She's done her utmost to cultivate this... and, is more than willing to pass the techniques along.
Forceful Kiss: Delivers a comedic variant, a 30-hit combo to Nagisa before getting him to come to her office in order to discuss Koro-sensei's weaknesses. She also does this to her other students, either as punishments or as rewards.
Hair-Trigger Temper: When she's frustrated, you know: she doesn't exactly hide it (unless from an actual target: then she does bottle it). Added to a set of Berserk Buttons of questioning either her sex-appeal, her competence or her dedication to killing a certain octopus... and stop calling me Bitch-sensei.
Heel-Face Turn: After Karasuma showed her how hard Koro-sensei works for his students, she decides to take her job as a teacher seriously.
Hidden Depths: She’s well aware that a woman’s beauty will not last for long and one should do everything she can to make herself shine as a woman.
Honey Pot: What she did before coming to this school.
Idiot Ball: Made a major mistake for not listening Nagisa's advice on Koro-sensei's weakness for her first assassination attempt. Worse, instead of using anti-sensei bullets, she used regular bullets, which have absolutely no effect on him.
Indirect Kiss: To Karasuma-sensei with his napkin. Unfortunately, he doesn't get the reason behind it.
Jerk with a Heart of Gold: She initially doesn't care about the students or believe in them, but she grows to care for them and increasingly become disgusted by the school's system of degrading Class-E.
Marshmallow Hell: Irina tries to extract information on Koro-sensei's weaknesses by smothering Nagisa with her breasts. A couple non-Class-E students find themselves incredibly jealous of him.
She often invokes this tropes, but fails for most of the time.
The students discover that everything she wears makes her or the clothes erotic, even if the clothes were worn by the female students; in fact, when she wears one of Kanzaki's dresses, the class notices how erotic the dress actually is.
Omniglot: She speaks ten languages from around the world. Her method is to take lovers in each of the countries she visits, and learn from them.
Self-Imposed Challenge: She overcomes challenges. Her win against her teacher Lovro (the challenge was an mock assassination on Karasuma) by using a wire trap (which Lorvo had never taught her) while using seduction (which she knew it wouldn't work against Karasuma) as an camouflage.
Stripperiffic: Flashes just a bit too much flesh than she really should as a teacher, whenever possible. It bites back, as Karasuma-sensei being a conservative Japanese man is not attracted by her style.
Weak, but Skilled: She is more skilled in wits than combat (or anything that uses more physical activity than she needed).
Class 3-E - Students
"I bet I could kill him. I mean, this teacher doesn't even see me as a hitman."
The most often seen student, and the main perspective character. Fell into Class 3-E at the end of the previous year due to poor grades. Timid, cautious and relatively weak, he prefers to observe and collect data on Koro-sensei's weaknesses rather than participate in assassination attempts. Despite that, or perhaps because of it, he is considered to be one of the best assassins-in-training in the class.5th best marksmanship, boys' side. Ranked 6th in the school for English.
Tropes associated with Nagisa:
The Ace: Even before he trounced Takaoka he was the only normal human to threaten Koro-sensei to the point where he had to use his molting ability. He is also readily acknowledged as being the go-to guy for information and analysis.
Ambiguous Disorder: There is something off about him. He isn't intimidated by having to wield a potentially deadly weapon or having to threaten someone's life, even though it's specifically pointed out that he should be. Yet he isn't generally callous or manipulative in the way a sociopath would be. He just has no compunction against killing for some reason, like you'd expect of a veteran hitman. Except he isn't one, yet.
He is supposed to be intimidated by the thought of using a real knife, but not only does he show no hesitation, he is clear-minded enough to attack using the dull side of the blade.
His interaction with Karma in the early chapters are also not quite ordinary. Most people would be rather disturbed by Karma's Ax-Crazy passion of killing his teacher, but Nagisa remained calm the whole time, he didn't comment on Karma's ideas and he didn't show any reaction to Karma's crazy behavior. Nagisa's facial expression was telling like neutral wondering whether Karma would succeed or not. In short, Nagisa just acted like a neutral observer.
Animal Motifs: An enormous snake. Symbolizes his viciousness and his ability to hide in plain sight, like a snake in the grass.
Anime Hair: He seems to have odd pigtails in the back of his head, but since we've never seen it down—even when he's swimming—it just may be its natural shape.
Attractive Bent-Gender: He only needs to put on a skirt and some Hair Decs to pass off as a really convincing girl, and even catches a guy's attention like this.
Audience Surrogate: For younger audiences in Japan, a character who struggles in school and suffers from lack of confidence would be extremely familiar to a lot of people. By this interpretation, that would make his ability to summon up will when needed and his various talents Wish Fulfillment.
Awesomeness by Analysis: Downplayed. His abilities are hardly superhuman, but he still possesses the best sensibility and instinct in the class when it comes to planning an assassination.
Badass Adorable: The shortest and most androgynous of the male students. He cemented his status as one of Class 3-E's biggest badasses when he destroyed Takaoka in a knife duel—with a real knife.
Berserk Button: Don't mess with his friends. Specifically, don't deliberately push this button by rubbing in the fact that you're trying to brutally kill off all of his friends. The one Troll who managed to successfully piss Nagisa off ended up regretting it for the rest of his life.
Beware the Nice Ones: Sure, he's a nice guy who gets along with everyone in the Ragtag Bunch of Misfits that is class 3-E, and is even a vegetarian to boot. But on the other hand his stealth and sheer bloodlust make elite veteran soldiers shit bricks. Shiro describes him as being an even greater monster than Itona.
You know that propensity to note down people's weaknesses? Well, seems he isn't above using what he learns to character assassinate you for a just cause (or just a distraction), either. Psychological warfare when needed? Check.
Bishounen: He looks good enough to be a girl, and when dresses as a girl, the boy named Yuuji prefers him over the real girls.
Book Dumb: Relatively speaking. He did fall into class E due to poor grades, after all. But when it comes to applying the knowledge he has, he's more like a Teen Genius.
Bread, Eggs, Milk, Squick: The three things he wants most are to get to know everyone in his class, to live without leaving things unfinished, and to kill his teacher.
Chekhov's Skill: The "sure kill technique" he learned from Lovro is left unmentioned and unexplained for several chapters until he uses it on Takaoka in their second duel.
Death Glare: Nagisa sends one to Takaoka when the conditions for his assassination method are finally met. He is smiling, but that only makes it even more chilling.
Dissonant Serenity: Walking up to Koro-sensei with a grenade around his neck and knowing full well he could get seriously injured or even die with nary a change in his usual expression? Check. Taking down an elite veteran soldier by casually walking up to him in a way he himself describes as as if I were walking to school and slashing at his neck? Check.
This is considered to be his greatest talent: the ability to completely hide his (considerable) killing intent, making him the most assassin-like of all the students.
Dude Looks Like a Lady: He has Girlish Pigtails and feminine-looking body (except he hasn't boobs). There are fans convinced he's still a woman posing as a man. Lampshaded in chapter 43, which also definitively confirms his gender—he wears a male swim suit, and several female students note how up until that point it had been hard to tell.
First-Person Peripheral Narrator: While Koro-sensei is the central character, Nagisa provides most of the narration, usually in the form of explaining the thoughts of the whole class.
Girlish Pigtails: Seriously, look at his hair. You can't deny that those are pigtails, and he looks very girly with them.
Groin Attack: He gets a verbal one. After he changes back from the girl outfit to his normal clothes, Karma suggests he should get rid of "it". Needless to say, Nagisa is not amused and wants to keep "it".
Gender-Blender Name: Nagisa is a name which is often given to girls, but boys have this name, too.
Hidden Depths: Nagisa is heavily implied to be more than just the main perspective character, as evidenced by his training with Karasuma in chapter 38. Karasuma has the kids attempt to attack him with their Anti-Sensei knives, which are harmless to humans. Suddenly, a monstrous snake attacks Karasuma. This is later revealed to be some sort of hallucination he had, and it was actually Nagisa. Later, when Takaoka challenges the class to fight him with real knives (believing that, like his other recruits, they'll choke because they've never used a real weapon), Karasuma gives the knife to Nagisa.
Heroic Self-Deprecation: He's at least competent at everything he does, but you wouldn't think so by how low his opinion of himself is unless his killing intent is switched on.
I'll Kill You!: Nagisa asserts this to Takaoka after he destroys the antidote needed to save his classmates. His classmates are perfectly willing to believe he'd actually go through with it.
Killing Intent: He can make middle school bullies and two of the government's most elite soldiers lose their composure and tremble in fear through killing intent alone. Powerful instances of this are symbolized by a gigantic snake, as Karasuma and Takaoka find out first-hand. His ability to freeze people with his killing intent alone has been compared to Orochimaru's, despite the fact that this is not a series about superpowered Ninja.
Let's Get Dangerous: He's known to everyone as a kind, meek student without any noteworthy physical abilities, though a few characters catch glimpses of his potential as an assassin. When Karasuma chooses him to fight Takaoka in a duel, most characters couldn't comprehend why...until Nagisa flawlessly takes Takaoka down using his wits and killing intent, even though the match was rigged against him.
When he's normal, he's so normal that Karma thought he was so un-scary that it was scary, because Karma had just seen how dangerous he could be but couldn't detect anything about him that gave that away. And when he's not normal, even when facing a vastly stronger opponent his classmates seem to be more afraid of him than for him.
Odd Friendship: With Karma. Despite being close and long-time friends who are often seen together, they're quite different. Karma is extroverted, aggressive and crass. He takes his time, enjoys taunting his opponents and attacks them recklessly and brutally. Nagisa is calm and polite. As an assassin, he's far more professional than Karma, hiding his intentions and going straight for precision kills before the target even expects anything.
Rage Breaking Point: After keeping his composure together while trying to appease Takaoka in order to obtain the antidote to the lethal virus afflicting his classmates, he finally loses it when Takaoka destroys the antidote anyways.
Silk Hiding Steel: Male version. He is certainly not your traditional badass, but he can make himself appear so innocent that a man intent on beating him into submission was stunned into inaction long enough for him to get in position for what could easily have been a killing blow.
Supporting Protagonist: From chapter 1 onward, he's been making note of every weakness his sensei has, from the weak, like Sensei's preference for large breasts, to the strong, like his reduced stamina after regenerating a wound, and his inability to swim.
Surprisingly Good English: We get to see one of Nagisa's graded English assignments in chapter 2. It's not perfect, but it's easily understandable. For added attention to detail, there are even a couple of spelling errors that are pointed out.
Note: "There aren't many grammatical errors and it wraps up nicely. What an excellent journal entry!!"
Tranquil Fury: When Takaoka blows up the antidote needed to save his friends, he develops Dull Eyes of Unhappiness and not-so-calmly announces his intention to kill him. After Koro-sensei and Terasaka talk him out of diving into a full blown Unstoppable Rage, his anger cools into a peaceful, terrifying smile as he prepares to use the "secret killing technique" on Takaoka.
Troubling Unchildlike Behavior: It's present for the entire class, but he's a very notable case. He's just too much of a natural at assassinations, which becomes even more troubling when juxtaposed with his usual behavior.
Waistcoat of Style: He's the only one student who wears the waistcoat without the blazer over it.
Weak, but Skilled: Takaoka notes that Nagisa is amongst the weakest of the boys, with physical stats closer to that of a girl's. A few pages later, Karasuma is staring at Nagisa in awe as he managed to take down Takaoka in a matter of seconds and noting that Nagisa's talent never would have been discovered in the course of a normal school life.
"Well Done, Son" Guy: It's not brought up often, but his parents don't look him in the eye ever since he landed in class E, and he would very much like to make, if not them, at least someone proud of him. And he's literally willing to kill to reach that goal.
When You Coming Home, Dad?: Because of his father's work, they don't get to see each other often, which is unfortunate because theirs seems to be one of the very few positive parent-child relationships in the series. Nagisa seems to like him much more than his mother, who he lives with.
Bi the Way: She has obviously an eye on Nagisa, but she has openly shown affection to Kataoka and Yada, too.
Completely Missing the Point: When the students push to have Irina-sensei kicked out of 3-E, her reason isn't Irina's initially poor teaching and lack of faith in the class, as it was with the other students. It was her boobs.
Damsel in Distress: In the Kyoto arc, and it would have happened again in the Assassination Island arc if the class hadn't decided to infiltrate the Fukuma Palace Hotel.
A Day in the Limelight: Despite the fact that she's a major viewpoint student, she usually stands in the background or supports them without doing something special. She shines in chapter 80 for the first time.
Foil: To Nagisa of the Childhood Friends version. She'd probably like to be something a littlemore intense, but until he bothers to notice, she'll settle for being the friend he can bounce ideas off of and occasionally makes good points of her own. She provides much of the useful excuse for his First-Person Peripheral Narrator status.
Weak, but Skilled: He lacks the strength needed to throw fast balls, but has excellent flexibility and control that allow him to use technical pitches to great effect.
"I think not enjoying yourself in a classroom where it's okay to kill is such a waste."
A student who joined late due to being suspended from school for trashing his teacher's office. He started off holding a major grudge against all teachers, and as such is one of the students most dedicated to the assassination. Koro-sensei helped him get over that particular issue, but he is still a near-sociopath who loves to beat people into unconsciousness.3rd best marksmanship, boys' side.
The Ace: One of the most physically capable students, ranked third in marksmanship, as well as the best in academic performance. He has the second best track record among the normal human students when it comes to threatening Koro-sensei.
A Lesson In Failure: His scores slip during the first term finals because he was arrogant about his intelligence and didn't study hard enough to succeed with the increased difficulty. Fortunately, he takes the lesson to heart, and starts working much harder from then on.
Arc Villain: Well, not exactly a villain, but he was definitive an antagonist to Koro-sensei in chapter 4 to 6.
Ax-Crazy: In the beginning of the series, he has shown a crazy obsession for killing Koro-sensei. It toned down after he learns to respect his teacher.
Bad Ass: It was always clear since he was the first student to injure Koro-sensei, but during the Assassination Island arc, he takes on an adult pro assassin, and it's obvious the whole time that he's got the guy's number, both in hand-to-hand and in guile.
Biting the Handkerchief: He isn't crying, and it isn't played for laughs, but biting his test papers is a clear sign of how upset he is by failing to beat Asano Jr. in the math portion of the first term finals, and on top of that performing worse than in the mid terms when class E had a handicap.
Brilliant, but Lazy: Aside from assassination attempts, he never seems to put much effort into anything, even training. Not that it affects his performance.
Comes to bite him in the assduring the first term finals where he performs badly enough to go from 4th to 13th place in the school rankings. Certainly, he still did great for someone who didn't study at all, but he could have done better and all involved knowing this.
Blood Knight: He is usually the first one who picks up in a fight.
Break the Haughty: Karma gets a little too proud of his early successes against Koro-sensei. However, all he really managed to do was draw Koro-sensei's full attention to him, and Koro-sensei makes sure that he knows exactly how outmatched he is by dealing with his attempts in the the most offhand and humiliating ways he can, until Karma is Driven ToSuicide Attack. Fortunately for him, Koro-sensei always fixes what he breaks.
Chapter 54 really puts him in his place.
Broken Pedestal: A teacher he looked up to protected him from the consequences of his Bully Hunting because of his good grades...until he targeted the wrong person. The pedestal breaking is (very) graphically depicted by the teacher crumbling to dust until only a skeleton remains.
Bully Hunter: It was this hobby of his that landed him in class E when he beat up a top-ranking student in defense of a member of said class.
First Name Basis: Most of his classmates, as well as Koro-sensei, call him by his first name.
Foil: Gakushuu Asano might be one being set up for him, seeing as both students are the strongest of their respective classes. The fact that Karma lost to him during the final exams really got to him.
Guile Hero: His plan in Chapter 49 clearly marks him as this.
Well, even before that, he injures Koro-sensei with trickery and smart methods, and almost everything he does is usually well planned.
Heel-Face Turn: He was not only willing to end Koro-sensei's life, but also to destroy his existence as an teacher. After Koro-sensei saved his life, Karma accepted as his teacher and will "only" try to kill him.
Jerk with a Heart of Gold: Karma is initially introduced as an Ax-Crazy lunatic, but is later revealed to have been a Bully Hunter and an excellent student. What landed him in Class E wasn't his being evil, but siding with a Class E student who was being bullied.
Meaningful Name: As a Bully Hunter, Karma is the bad thing that happens to bad people. He also says that his parents love India, which would explain why they named him like that. He does like to dish out G-rated ironic fates that are still pretty horrendous whenever he can manage them...perhaps a little too much at times. Think a young, male Nemesis on a budget.
Not Afraid to Die: Jumped off a cliff as part of an assassination attempt. He wasn't sure if Koro-sensei would even try to rescue him, and even if he did, if Karma's plan had gone as he intended he would have fallen to his death after killing Koro-sensei. He's developed to become more attached to his life since then.
"The Reason You Suck" Speech: On the receiving end of one, from Koro-sensei, after he gets lower scores than previously on the first term exams. Of course, this is to help him learn and grow, but it was still harsh-sounding enough to qualify.
Sociopathic Hero: Unlike Nagisa, he isn't just capable of violence, he enjoys it. A lot. People he targets often end up very badly injured. At least he seems to have a sort of a code.
Troll: When he starts really enjoying himself, he can cross the line from the TricksterishBully Hunter to outright Troll in seconds. And, you really don't want him to do that when he's holding tubes of wasabi paste or anywhere near Scotch Bonnets...
True Companions: Despite his sometimes aloof behavior, he gets along very well with his classmates and he never harms any of them, despite being a Blood Knight. He's also a Bully Hunter because he cares for his classmates.
A girl who is good in math and science, but is weak in languages. She has a talent for making poisons, medicines and other chemicals. Ranked top in the school for Science.
Master Poisoner: In training, so currently more like "Apprentice Poisoner" at the moment. Homemade toxins a specialty! Needs to work on delivery, though. Because she can make various medicine and chemicals, Karma is attracted to her.
Meganekko: The only girl of the class who wears glasses.
No Social Skills: She is awkward, timid and incredibly straightforward. Her method of trying to poison Koro-sensei was to walk up to him and ask him to drink her concoctions. Then, when Koro-sensei offered to tutor her on how to create a chemical mixture that would kill him, she took him at face value. In truth, the medicine that she made is actually a medicine that improves his fluidity. Koro-sensei uses this as an lesson for Okuda on why delivery (or conversation skills) was also a necessity.
Art Attacker: He attempts to use his art and disguise talents to assassinate Koro-sensei, without much success.
Delinquent: Averted. When he appeared with a henna tattoo on his left arm, everyone was worried that he became one.
Distracted by the Ugly: During the final exams of the first semester, the ugly replacement of Ritsu was sitting next to him, so he couldn't concentrate and ended up getting the lowest score in the class. However, he still increased his rank from 149 to 95, being in the middle ground among those in his grade.
Mad Artist: He is not mad, but in chapter 37, he uses henna paint mixed with Anti-Sensei material to kill Koro-sensei. However, the tattoo is extremely painful, but Koro-sensei has to sit long enough to be killed like that.
Mark of the Beast: How he describes his henna tattoo in chapter 37. When Bitch-sensei shows up and sees that every student has henna tattoos on their arms, she is so shocked that she almost believes they are monsters.
A beautiful and popular student, said to be the idol of class E. Comes from a conservative, wealthy family, who wanted her to be an ideal Japanese woman. Rebelled against her family by constantly visiting arcades and ignoring her studies, which caused her grades to drop to the point that she was moved to class E.5th best marksmanship, girls' side. Ranked 2nd in school for Japanese Literature.
A Day in the Limelight: Chapter 15 to 17. And later a little bit in chapter 51 to 53, along with Nakamura, Okuda and Isogai.
Fantasy-Forbidding Father/Tranquil Fury: Her father is an strict, stern man who despises her attitude and prohibits her anything he thinks may be detrimental to her high status. In the volume 03 extras, her father yells at her and orders her to change her behavior, but she refuses to obey him and states that she's determined to keep going. In the volume 04 extras, her father chews her out (again) and demands she pursues a career in law, which he considers the right path for someone of her status. At that point, Kanzaki flips him off, tells him that she wants to become a caretaker and that's final. All with a calm smile in her face.
Gamer Chick: Not just regular games. She wins at Bullet Hell arcade games, while never losing her Yamato Nadeshiko demeanor. It's deconstructed, in that she got so good at video games by shirking her studies to rebel against her parents, and that's how she ended up in Class-E.
Nice Girl: The main reason for her popularity among Class E. When the boys voted on which girl was the most attractive, she came first, and personality and face were listed as the reasons for that.
Stepford Smiler: After falling to Class E, she became depressed because her teenage rebellion led her to fail her family. Thanks to Koro-sensei she got better.
Yamato Nadeshiko: She is noted for her grace, helpfulness and reliability, and is very popular among the male students. As is customary, she also has some steel to her as well. She was the second student to stand up to Takaoka, after he revealed his true nature by beating up Maehara.
Class 3-E's female class representative.A popular student who is good in studies and sports and is very helpful. She is also shown to have good leadership skills. Best knife work (tied), girls' side. Placed 7th in the school for composite score, tied with Takebayashi.
Not So Stoic: Usually one of the more serious students, but sometimes she can't keep her cool.
Taking Advantage of Generosity: A victim of this. She spent so much time helping another student study (because of emotional blackmail) that she fell behind in her weaker school subjects and landed in Class E. After Koro-sensei and others helped her get out of it, she was back on the right footing.
Tomboy: To the point that people describe her as an ikemen ("cool/good-looking guy").
A girl with a ponytail and one of the more frequently seen students. 3rd best knife work (tied), girls' side.
Tropes associated with Yada:
Buxom Is Better: She is the only girl in the class who has E-cups, having the largest bust of the girls. And she was voted as the second most popular girl by the boys during the Kyoto trip because of her breasts. The fact that not even Kayano dislikes her bust helps.
Cool Big Sis: Apparently. She tells Koro-sensei a sad story about her and her younger brother to escape from jail during the tag game. The story is a lie, but it's unknown if she really has a younger brother.
Crazy-Prepared: Learning from Bitch-sensei, she starts carrying around different organizations' badges just in case.
Fille Fatale: In charm-school training and quite enthusiastic about it. She was the most focused when attending Bitch-sensei's courses, and decided to take the skills of infiltration (as in entertaining and negotiating) as her secondary weapon for her future
Honey Pot: G-rated version, but she did learn how to charm people from Bitch-sensei.
A girl with medium long light hair and an animal lover. 3rd best knife work (tied), girls' side.
Friend to All Living Things: "I love all living things~." She is an expert when it comes to biology, and she also can interact with dolphins, which helps her during the assassination attempt on Koro-sensei in the Assassination Island arc.
Tsundere: After saying the line "Don't get the wrong idea!" to Itona, Okajima and Takebayashilampshade that's a typical tsundere line. Hayami usually doesn't act like a tsundere, though, and her line doesn't make sense in context to be a tsundere line. It's more like those two really want it to be true.
The Stoic: He is one of the most calm and most serious boys. So much so that his relationship with his parents suffered because he never showed what he was feeling, and possibly his previous classmates never realized how much they were overloading him.
He's also one of the few students who doesn't have comical expressions.
Class 3-E's male class representative.A nice student who comes from a poor family. 2nd best marksmanship, best knife work, boys' side. Ranked top in school for Social Studies, and placed 10th for composite score.
Tropes associated with Isogai:
The Ace: He seems to be good at every single thing he does, be it combat or studies. Asides from that, he also works part time to help his family, takes care of his younger siblings and is the class rep of Class E. No wonder why he is regarded In-Universe as one of the nicest and more trustworthy guys in the class, if not the whole manga. Similar to Karma, he is only in Class E because he broke the school rules.
The first half of Chapter 90 is basically dedicated to establishing how awesome he is at everything.
Badass in a Nice Suit: As noted above, his combat skills are exceptional. He's also one of only two characters to wear the full school uniform, with both jacket and waistcoat (the other is Takebayashi).
Bishounen: He's one of the boys who looks a bit effeminate, though not nearly as much as Nagisa. Also acknowledged in-universe to be the hottest guy in Class E.
A Day in the Limelight: A little bit in chapter 51 to 53, along with Nakamura, Okuda and Kanzaki. Has a much bigger one in the arc starting in Chapter 90.
Finger Poke of Doom: When dealing with four particularly assholish students from the main school, Nagisa, Nakamura and Kanzaki all scare them off by holding pens or rulers against their necks. Isogai does the same thing, but with a single finger.
Hair Antennae: Has them, though he doesn't fit the personality type. His character profile says that people want to rip them out, so if you see him in fanart and another character is near him holding scissors or shears, that's why.
Those Two Guys: Particularly in crowd shots, Isogai and Maehara are almost always seen standing close or next to each other.
A deliquent who is not very fond of the idea to kill his monster teacher. One of the more aloof students until he Took a Level in Kindness. After finding his enthusiasm to kill Koro-sensei with the class, his talent of encouraging and motivating people has been revealed. Placed 1st in home economics, tied with Yoshida, Muramatsu and Hazama.
The Big Guy: Does not have talent in assassination. But in Koro-sensei's words, he's had an amazing potential as an operational type assassin, he shines on physical strength and an ability to (and encourage others to) make things done.
The Bully: He used his tall and muscular body to suppress other students without fighting. This bit back when his grades became low enough that students in the main building are unimpressed with him, and now they bully him. He's still a bully, but not as bad as he used to be.
Made of Iron: Gets hit by one of Itona's tentacles, but he's able to endure it. In the Assassination Island arc, he is also infected by the virus, but he doesn't let anyone notice that and he still fights alongside with the other remaining students, due to sheer determination of an atoner.
The Mole: Briefly worked as one for Shiro so he could avoid drawing attention with his presence. Quit once he found out just how little regard for Class E's lives Shiro had.
Real Men Wear Pink: During the first term finals he gets a perfect score (and is tied for the top rank) in home economics.
Rules Lawyer: Well, it was never stipulated which subjects they should get first in, was it?
Smug Snake: Yup—tends to think himself more important than he is. And that the best way for a peaceful life is to bring others down to his own level. Oozes Smug. This may well be in the process of changing a bit since he's taken a level in self-realization.
One of the two guys who hangs around with Terasaka. His family has a ramen restaurant which doesn't have good business. 4th best marksmanship, boys' side. Placed 1st in home economics, tied with Terasaka, Yoshida, and Hazama.
Real Men Can Cook: His family has a ramen restaurant, but the ramen tastes bad. He knows it, but he has to cook with his father's recipes.
Real Men Wear Pink: During the first term finals he gets a perfect score (and is tied for the top rank) in home economics. Justified given his background.
Satellite Character: Along with Yoshida, he mostly exists to increase Terasaka's presence, or to give him something to react to.
Supreme Chef: Along with Hara, he's the best cook in the class. The Tankobon extras mentions both of them going on a cook off in Home Economics, whipping up as many dishes as they can. Apparently it ended in a tie.
One of the two guys who hangs around with Terasaka. He loves motorcycles since his family has a small motorcycle company. Placed 1st in home economics, tied with Terasaka, Muramatsu and Hazama.
Real Men Wear Pink: During the first term finals he gets a perfect score (and is tied for the top rank) in home economics.
Satellite Character: Along with Muramatsu, he mostly exists to increase Terasaka's presence, or to give him something to react to.
A delinquent girl who often hangs around with Terasaka and his friends. She has an interest for dark literature. 3rd best marksmanship, girls' side. Placed 1st in home economics, tied with Terasaka, Yoshida, Muramatsu.
Bookworm: She likes reading literature with dark stories. The Pool arc shows her prefering reading books rather than swimming. Later she offers Itona to read a seven-volume series that has over 2500 pages... and she spoils the story before handing the books over, anyway.
Delinquent: She often hangs out with Terasaka and his friends.
Troll: Why else would you go and scare people on the road at night?
One of the better students in the class. His family run a hospital for generations, but his low grades made him into a Black Sheep. Ranked 7th in the school for composite score, tied with Kataoka. He later leaves the class to return to the main building and he enters Class 3-A. Shortly after, he decides to return to Class 3-E where he belongs.
Black Sheep: His family has been running a hospital for generations, and his two older brothers are studying in the Tokyo University, while Koutarou is in Class 3-E and isn't even accepted as a proper family member.
The Glasses Gotta Go: Koro-sensei takes off his glasses for a couple of panels, and he's revealed to be an absolute stunner without them. Somewhat subverted by the fact that Koro-sensei applied Visual Kei make up on him and styled his hair fashionably at the same time, but he did look much better without them.
The Stoic: One of the most calm and serious students. He keeps his cool during the Assassination Island arc when the other students are poisoned and he handles the situation professionally.
Took a Level in Jerkass: Gets out of Class E, and a makes a speech that makes him seem like an utter dickhead.Subverted, though. The Chairman required he make that speech and outside that he remains respectful and has legitimate reasons for wanting out. His family makes enough in a year that his cut of the ten billion reward wouldn't suffice to impress his parents and all the students should be striving to leave the class. He even apologizes for it and wishes them well. Then in chapter 79, he decides not to play along with the Chairman's plans and goes back to Class E.
"Well Done, Son" Guy: He wants his parents approval more than anything. Which is why he leaves Class 3-E and the assassination mission. He eventually decides that it's not worth selling out Class E, the only place he ever felt like he really belonged, and he goes back.
A fat girl who is good with tailoring. 2nd best marksmanship, girls' side.
Tropes associated with Hara:
Berserk Button: Don't call her 'fat', even Terasaka is afraid of her when this button is pushed.
Fat Girl: Noticeably to be plumpier than other girls.
Team Mom: Seems to be this. In the Assassination Island arc, she is able to calm down Yoshida while being poisoned.
Supreme Chef: Best cook in the class, along with Muramatsu. The Tankobon extras mentions both of them going on a cook off in Home Economics, whipping up as many dishes as they can. Apparently it ended in a tie.
The Peeping Tom: Subverted, when she peeps in the men's bath and Okajima says that this is actually their job. However, it turns out that she wants to know how a naked Koro-sensei looks like, which would be helpful against him. It doesn't work, though.
A boy who is good in editing videos.
Tropes associated with Mimura:
Air Guitar: Apparently does this. Offscreen. Behind the school building where nobody can see.
A boy with very short hair, who frequently opens his perverted side. 4th best knife work (tied), boys' side.
All Men Are Perverts: So far, all of his noteworthy lines have been expressing this as an opinion. He sees a love of large breasts as a bond between all men, including himself, Koro-sensei and Itona. It's a good thing he doesn't sit next to Kayano.
Badass Boast: "I am a pervert and you can despise me if you want. But because I am the most perverted guy out there, I know perversion can save the world." Even his classmates are impressed by this line.
Camera Fiend: He usually wants to take hot pictures of girls and women.
Serious Business: "Perversion can save the world." He puts different porn magazines in the forest to research Koro-sensei's taste for a month. Then he uses the right porn magazines as a trap. Though, everyone can see it's a trap.
Justice "Masayoshi" Kimura
The fastest runner in the class. 4th best knife work (tied), boys' side.
Embarrassing First Name/Awesome McCoolname: His legal name is Justice Kimura, which embarrasses him a lot with all the attention it draws, which is why he tells everyone to call him by his preferred name, Masayoshi. The rest of the class doesn't seem to think it's that bad though.
Guns Akimbo: In chapter 89, when he manages to take down Karasuma in the shooting exercise.
Lightning Bruiser: He is the fastest runner in the class, able to do a 100 meter dash in 11 seconds flat, putting him in striking distance of the world record for someone in his age group. He uses his speed during the baseball match and during the Assassination Island arc.
Pintsized Powerhouse: He's one of the shortest boys, only a little taller than Nagisa, which makes his speed and skill with knife work all the more impressive.
We Need a Distraction: Following one of Karma's plans, because of his speed he is called upon to lure a couple guards away from their posts during the hotel infiltration. He turns out to be bad at it, sounding incredibly awkward while trying to provoke them.
Fantasy Sequence: Has one where she imagines Koro-sensei and Itona living together as children... in medieval times. They were separated from each other while fleeing an invasion. When asked why only one of them appears human, she Hand Waves it as "a mutation".
A transfer student and a killing machine with the face of a girl, created to kill Koro-sensei. She is the inferior assassin to fellow assassin Itona, but she is still one of the most dangerous students.
Tropes associated with Ritsu:
The Ace: She's the strongest student in terms of firepower.
A.I. Is a Crapshoot: Ristu is designed as a learning AI-unit dedicated to assassination with a carefully simulated and bounded personality. Decided she preferred being a Moe student against orders when she got a personality upgrade (although, still quite happy to lend a helping hand to try destroying Koro-sensei).
Badass Boast: After blowing off Koro-sensei's index finger, she delivers this.
Ritsu: "The killing probability of the next shot is less than 0.001%. The killing probability of the shot after that is less than 0.003%. The probability that I'll be able to kill you by graduation is more than 90%."
Break the Cutie: Her creators wanted to turn her from her cheerful personality to her emotionless killer machine again. However, she was able to save and hide her memories from them and retaining her personality.
Heel-Face Turn: Originally a loner who tried to assassinate Koro-sensei without caring about the other students. After Koro-sensei upgraded her, she is now one of the True Companions.
Hollywood Hacking: She has high hacking skills since she is a AI and she hacked every cell phone of her classmates to download herself, which gives her a mobile version of herself called "Mobile Ritsu", which is very useful for the class. During the Assassination Island arc, she hacks the secure system of the Fukuma Hotel Palace.
Zettai Ryouiki: Grade A, during the times when her human visual representation is rendered as a full body.
The second transfer student who was sent to assassinate Koro-sensei. He's the superior assassin to Ritsu, and he's a creature similar to Koro-sensei who refers to him as his "brother". His backstory reveals that his family was a cellphone parts company which went bankrupt and his parents abandoned him. Shiro found him and implated the tentacle cells on his head. After losing three times to Koro-sensei, Shiro abandoned him, and Itona finally intends Class 3 after losing his tentacles which would have killed him. Now Itona is part of Terasaka's group who helped him accept his losses.
Tropes associated with Itona:
The Ace: The most dangerous and most lethal student in the class. The reason, why he's transferred to the class after Ritsu, was because she was "significantly inferior" to him.
Broken Ace: He was already broken before receiving his power. And then he's abandoned by Shiro after losing three times to Koro-sensei, he gets even more broken. Fortunately, Koro-sensei and the class help him out of his crisis.
Brains and Brawn: He fights Koro-sensei with his enourmous strength, while his handler Shiro makes the plans and preparations for his battles.
Brought Down to Normal: Has his tentacles removed in chapter 87. After Shiro abandoned him, he no longer had the ability to recharge them, so they would have killed him otherwise.
Brutal Honesty: Even about people he somewhat likes, he always says exactly what he thinks of them (and the disgusting ramen they give him for free).
Cast from Hit Points: His tentacles give him great power to fight in par with Koro-sensei when the latter is in disadvantage, but they need a lot of energy and cause immense pain and stress to his body and brain that he need rare and expensive medicine on a daily basis or he would die. The tentacles drain so much energy from his brain that he's unable to use his high intelligence and his learning ability.
Delinquent: Is now hanging around with Terasaka and his friends.
The Dragon: To his handler Shiro until being abandoned by him.
Dynamic Entry: Is first introduced by walking straight through a wall, demolishing it and then calmly taking his seat.
Establishing Character Moment: When he is officially introduced, he crushed through the wall and saying that he was victorious against the wall because he was stronger. That shows his obsession with winning.
Exotic Eye Designs: The most obvious sign of his inhuman nature. At first they had multiple rings, but by his second arc they had mutated to have two pupils instead.
The tentacles get Whip Sword covers but only for one chapter.
First Name Basis: He is also one of the students who is called by his first name.
Freudian Excuse: The reason why he is so obsessed with winning and and having tentacles is because his parents abandoned him after their company went bankrupt, and his schoolmates bullied him for bein a loser. That's why he accepted Shiro's offer to gain power to become a winner.
Gadgeteer Genius: Demonstrates a knack for gadgetry after losing the tentacles which were impairing his higher brain functions and joining the class for real.
Heel-Face Turn: He officially joins the class for real in chapter 87, now being in Terasaka's group.
I Just Want to Be Special: Due to being abandoned by his real parents (and later Shiro) he has (to use a quote from Medaka Box) an "abnormal need to be abnormal", which helped him withstand the painful experiments Shiro performed on him. Unfortunately his strength is also what could kill him — the tentacles use a lot of energy and if he doesn't let go of them and his need to be special he'll disintegrate.
You Have Failed Me: Shiro abandons him when he realizes he'll never defeat Koro-Sensei even with tentacles that use three nuclear powerplants worth of energy; and not only that he uses Itona as "bait" to keep Koro-sensei in one place and distracted while his team fires at them.
The tip top of the student body of Kunugigaoka Junior High. Led by the Chairman's son Gakushuu Asano.
Tropes associated with multiple Class 3-A students:
The Ace: The Five Virtuosos are the top in their respective subjects. And come with the requisite ego to match. The four foreign exchange students are top class sportsmen.
The Big Guys: The four foreign exchange students are ridiculously huge and they are top sportsman.
Foreign Exchange Student: Asano Jr. calls four foreign top sportsmen to transfer to his school, so his class can defeat Class 3-E in the sports festival.
Younger than They Look: The four foreign exchange students are 15 years old like the rest of the class, but they look much older. No wonder that some characters doubt their age.
Student council president of Kunugigaoka junior high school, the top scorer of the Five Virtuosos who have the highest scores in the school, and son of chairman Gakuhou Asano. He is every bit as domineering as his father, but lacks his sense of greater purpose. Before the first term finals, he leads class A, comprised of the school's top students, in a massive group study session to ensure class E cannot upset the school's established system at his father's behest.
Tropes associated with Asano:
The Ace: Ranked either first or second in all his subjects during the Final Exam arc. Also speaks multiple languages and displays astonishing martial arts ability.
Antagonistic Offspring/Eviler than Thou: His relationship with his father is basically this. He wants to keep his father like a pet, while his father intends to make him a corporate slave for the rest of his life. One has to wonder what the mother is like.
Arc Villain: In chapters 50 to 54. He returns to this role in chapter 90.
Bishounen: The only one of two good looking students in the entire main building.
Break the Haughty: Hit with this in chapter 54, with his father rubbing salt into the wound.
Cunning Linguist: In chapter 90, he's seen speaking English, French, Korean and Portuguese with astonishing ease.
Even Evil Has Standards: On the wrong side of this trope. Even his fellow Virtuosos, none of them pleasant people, think of him as black-hearted.
Insane Troll Logic: Like father like son. Of course the easiest way to beat your dad in your little info war is... an extended examination beat-down contest with Class E to force them to tell you what he's hiding? Huh? Why not just ask nicely?
Last Name Basis: With his own father, though this isn't too uncommon in formal settings. Also, everyone else calls him by his last name, too. To distinguish him from his father, the chairman is always referred with his title before his name.
Meaningful Name: His name means "excels at study." His father knew exactly what he was going for when he named him.
"The Reason You Suck" Speech: Receives one from his father in chapter 54 after losing the bet with Class E. Asano's father mocks his plan to turn him into a pet when he couldn't even win against people his own age.
The Sociopath: He's inherited all of the traits his father displays, in particular the charisma and callous manipulative behavior.
One of the Five Virtuosos, ranked second in the school, specializing in social studies. As head of the broadcasting club, he had a few cameos before being formally introduced. He was one of the speakers in the May school assembly, and the announcer in the exhibition baseball match.
Tropes associated with Araki:
Mouth of Sauron: Though it's not any kind of official capacity, most of the time when he appears he's the one implementing Asano's vision of the school by inciting the other students to mock Class-E, since the chairman himself doesn't often involve himself in the day-to-day lives of his students.
Smarmy Host: Makes constant obviously disparaging comments about Class-E in his speeches.
Younger than They Look: In his first appearance, in chapter 11, if you didn't notice he was wearing a student uniform you might think he was a member of the faculty.
One of the Five Virtuosos, ranked third in the school, specializing in Japanese.
Tropes associated with Sakakibara:
Bishounen: Not as much as Asano Jr. due to his rather odd hairstyle.
Casanova Wannabe: He enjoys flirting with girls, and he flirts with Kanzaki, too.
Token Good Teammate: Though, he is still pretty arrogant, he just doesn't badmouth Class-E that much than the others.
One of the Five Virtuosos, ranked fifth in the school (Karma took the forth place ranking), specializing in science. Prior to the first term finals, appeared only in Terasaka's pre-class E flashbacks.
Tropes associated with Koyama:
Gonk: With his extremely crooked teeth, bizarre eyes and grotesque expressions, he really sets the bar for ugliness high.
Jerkass: Beyond the normal non-class E unkindness, he is verbally abusive even to members of his own class while he tutors them.
Pride: Has a strange, almost obsessive vanity. When sitting under an awning in the rain he remarks, apropos of nothing, about what a sense of superiority it gives him to be in the only dry area.
The American National Junior Football representative.
Tropes associated with Kevin:
The next generation's ace at a famous wrestling gym in France.
Tropes associated with Camille:
A rising star in the Korean basketball world.
Tropes associated with Sang-Hyuk:
The son of an international fighter from Brazil.
Tropes associated with José:
Kunugigaoka Junior High School Other
Captain on the baseball club, able to pitch fastballs on the level of pro players.
Tropes associated with Shindou:
The Ace: How he sees himself and his team members, who all excel in both military arts (sports) and literary arts (study). He refers to them as chosen ones.
Blunt Yes: To when Karma questions whether he really is a chosen one.
Crippling Overspecialization: His pitches are incredibly fast for a middle schooler, but since he only has two, class E was able to counter and manipulate him easily until the Chairman mixed things up.
Friendly Rivalry: With Sugino, with a power vs. technique dynamic. He acknowledges it after Class E wins the exhibition match.
Heel-Face Turn: The first main school student to openly help class E, even if only in a small way. Then again, the baseball club was always less malicious towards class E than the rest of the school. They mostly limited themselves to a few insensitive comments and being typical arrogant jocks.
I Always Wanted to Say That: He always wanted to introduce a group of people like an over-the-top announcer. He gets his chance with the Five Virtuosos.
Large Ham: He really enjoys being overly dramatic.
Worthy Opponent: Shindou considers Sugino as one, to the point of warning him of Class A's antics.
Nobuta Tanaka & Chousuke Takada
Nagisa's two former classmates, Tanaka and Takada, who are in Class 3-D. They are pathetic Gonks who believe (like everyone else) they are superior to the students in Class E, but they are close to falling into this very class themselves.
Blatant Lies: When they harass Nagisa because they didn't like how happy he seemed, they corner him. When he doesn't seem threatened or bothered by them, they threaten his life. All it takes is a non-threatening Wham Line and a Death Glare on Nagisa's part to scare them off. Then they go and tell everyone that they were the ones given a death threat.
Straw Loser: They are proud that are not in Class E, yet their grades are so low that they could fall into that very class, they hate. The irony, Class 3-E has already surpassed Class 3-A.
They watch the baseball match between the Class 3-E boys and the baseball team to feel better after their own loss against another class. After Class 3-E wins, they are pissed of and claim that the match was boring.
Those Two Guys: They appear always together and have no distinct characterization that tell them apart.
A girl from the main school. Has or tries to have at least three different boyfriends over the course of her short appearances, mainly just for the sake of having one.
Tropes associated with Tsuchiya:
Bad Liar: Lies often, about anything and everything that may cause her embarrassment. It's always obvious when she does, but Seo at least is perfectly happy to let it slide.
Bitch in Sheep's Clothing: Though she tries to pass herself off as merely playful, her spite for everyone who isn't useful to her is clear.
Triang Relations: With Maehara as A, her as B and Seo as C, a type 4... Until the rest of class E decided to get involved, at which point it became nothing.
Your Cheating Heart: Maintains multiple boyfriends at once as a matter of convenience. When two of them find out about each other, she casually dumps the more disposable one (class E's Maehara) on the spot.
Book Dumb: She forces Kataoka to help her studies.
Blackmail: She blames Kataoka for being nearly drowned in the ocean because she "didn't teach her how to swim properly" despite it's her own fault. She forces Kataoka to help her studying because of this event.
Fan Disservice: Licking on Kataoka's arm. And Kokona's face isn't pretty at all.
The End Justifies The Means: The Principal makes Class E the school's pariahs because it means the other students will do anything to keep their grades up and not get sent there.
Foil: He and Koro-sensei contrast each other greatly. Where Koro-sensei is a monster intent on destroying the world, Asano wants to improve the world through education. Yet strangely, Koro-sensei is goofy, but kind, while Asano is strict and incredibly cruel.
Follow in My Footsteps: His son, Gakushuu, is basically like him. They have a ... disturbing relationship, with one intent on keeping the other as a corporate slave and the other treating his father like a pet.
Idiot Ball: Suffice to say. Beating down the confidence of the only people in a legitimate position to end a world ending threat that will destroy ALL LIFE on the planet within a year is a terrible idea. If they fail due to, say a lack of confidence in their own abilities thanks to a systematic destruction, then he's equally culpable for the destruction of the human race in order to preserve his ideals as a teacher which favors grades over individuals. Worse, if they succeed? Then a phenomenally rich, highest quality assassin who has the favor of every government on the planet, the assistance of several of the worlds best assassins and an overtly obvious reason to HATE the principal for making their junior highschool years a living hell, has every reason to ruin/kill him with every resource available to them and basically no one to tell them not to. Anyone with real authority knows they saved the world, right?
Insane Troll Logic: The Chairman of the school is more interested in preserving his system than keeping Koro-sensei from destroying the world.
Jerk Ass Has A Point: His cruelty is without measure and he manipulates the students, but aside from the discrimination and sabotage the lessons he's teaching do have their points. As he explains to Koro-Sensei when he allowed one student from Class 3-E to transfer out.
Manipulative Bastard: Anything he can do to ensure that his system works will be done, from personally teaching the content of an upcoming midterm to all students except Class 3-E to hiring a Sadist Teacher to make sure Class 3-E's grades drop dramatically.
And when said Sadist Teacher failed to live up to expectations e.g. beaten by Nagisa, he swiftly ejects them in order to deny the students the satisfaction of kicking him out.
Not that ironically: the guy was considered rather abrasive and quite a nasty piece of work both in contemporary sources and since. That he got judicially murdered wasn't that much of a surprise, considering the stuff he pulled. The honor doesn't lie in the 47 defending the memory of a just man, but keeping their word and allegiance beyond his death.
No Sense of Personal Space: Goes forehead-to-forehead with the coach of the baseball club (pretending to check for a fever) when threatening to fire him because class E is winning the exhibition game against them.
Sadist Teacher: It is known that he teaches classes. Even though he isn't a teacher of Class-E, he is a bastard to them.
The Sociopath: He has not even the slightest shred of remorse or empathy for the students whose lives he actively tries to ruin. He also has the superficial charm and manipulation ability aspects of the disorder down pat.
Well-Intentioned Extremist: His system intends to ensures that 95% of the students become highly successful in their studies... by treating the other 5% like absolute garbage. Considering his sociopathy, YMMV as to whether this is actually well intentioned, or if it is simple a bid for glory.
The Extremist Was Right: While his methods are severe, and despicable, he has, in fact, turned his school into one of the most prestigious in the country, and the vast majority of his students are practically guaranteed to move on to bigger and better things. It is also worth noting that, while he does not discourage the mistreatment of Class E by other students and teachers, he also does not officially encourage it, either. The entire faculty and student body perform these actions of their own free will, and there is no official reward for doing them, nor is there any official punishment for not doing it, or for helping members of Class E. Call him evil, a sociopath, a sadist, he is all these things, and probably worse, but he created a system that works, and works well, so even if it means that 5% of his student body will be completely miserable, the other 95% will thrive. His only real offense against his students is working to ensure that any who fall into Class E never get out unless it suits his purpose.
You Have Outlived Your Usefulness: He fired Takaoka. His objection wasn't even with Takaoka's use of violence as a teaching method. While he disapproved of it, the reason he stepped in was because Nagisa beat Takaoka in their fight, which meant the class would never be afraid of Takaoka again.
Lovro the Hitman Dealer
Irina's teacher. A man who handles contracts for assassins around the world, as well as using his wealth of knowledge and experience to train the next generation of professional killers.
Tropes associated with Lovro:
Drill Sergeant Nasty: His introduction has him hanging Irina from the ceiling with a rope because he thinks she's gotten too lax. But with the students, his methods are much more moderated.
Retired Badass: He used to be a skilled assassin, but age has taken its toll.
A sniper obsessed with the color red. He was one of the hitmen who were hired by the government to assassinate Koro-sensei in Kyoto. After he failed several times, Koro-sensei, who knew that he was his target from the beginning, thanked to him for his several attempts, because Class E could learn from it, and Red Eye finally gave up.
Tropes associated with Red Eye:
Butt Monkey: All of his attempts failed in hilarious way.
Even Evil Has Standards: Gastro, Smog, and Grip, didn't think that maintaining their reputations was worth killing a whole class of students. So, Smog didn't give Class E the lethal poison Takaoka had gleefully ordered him to use, and instead used one that did no permanent damage and only lasted a few hours.
Combat Pragmatist: He still uses poison and knives, since he's a professional assassin.
Even Evil Has Standards: Gastro, Smog, and Grip, didn't think that maintaining their reputations was worth killing a whole class of students. So, Grip never used his assassination skills to assassinate the class and fought them directly.
Even Evil Has Standards: Gastro, Smog, and Grip, didn't think that maintaining their reputations was worth killing a whole class of students. So, he never fought Class-E with his full strength, though, he was still dangerous enough to be a serious threat.
Fish Eyes: His eyes usually face away from each other. They probably enhance his shooting skills.
Super Senses: He has very good ears, as he is able to find out the number of students (+ Karasuma) and how roughly old they are by just hearing their breaths. He is also able to hear out the stolen guns they use, and considering his Improbable Aiming Skills, he must have good eyes, too.
Would Hurt a Child: Aimed for the kill during his battle with Class 3-E. Sugaya's decoy saved Chiba from receiving a bullet between his eyes.
God of Death
Said to be the best assassin in the world. Not much is known about him.
Colorful Theme Naming: His real name is unknown, but because he wears only white clothes, he calls himself Shiro, which means "white" in Japanese.
The Corrupter: He took advantage of Itona's dire cirscumstances and weak state of mind to turn him into his personal Tykebomb in his vendetta against Koro-sensei, and as revealed by chapter 88, he intends to do the same to Nagisa.
Crazy-Prepared: He knows a lot of Koro-sensei's weaknesses, and he puts a lot of efforts and preparation for Itona's battles against him.
Evil Genius: The reason, why Itona's battles against Koro-sensei are so difficult is because of Shiro's calculations.
A member of Ministry's Special Services Division assigned to push the training of Class 3-E and replace Karasuma as their P.E. teacher. He introduces himself as a easygoing father-like figure, but it quickly becomes apparent that he's actually a sadistic drill sergeant who has no problems with subjecting children to violent and unreasonable training regimens for his own benefit.
Tropes associated with Takaoka:
Arc Villain: In his introduction arc and in the Assassination Island arc.
Ax-Crazy: This guy really enjoys beating his disciples into bloody pulps, regardless of their age. Not to mention poisoning Class 3-E and destroying the antidote.
Batman Gambit: To prove that he's a reasonableauthority figure, Takaoka promises to leave if a student can land a single knife-hit on him in a one-on-one match. The catch? He expects none of them to be mentally prepared to use a deadly weapon against an actual human, so he demands that the challenger fights using a sharpened combat knife. The hesitation of using the knife, on top of the fact that no student is even skilled enough to hit him with an anti-sensei knife, will turn the match into a sure-win situation for himself. This is why Takaoka is completely thrown off guard when Nagisa, one of the physically weakest students of the class, decides not to put up a "traditional" fight and instead smiles as he casually walks over to him. Then he aims straight for his neck without any hesitation whatsoever.
Big Eater: He claimed that it was the reason he's a bit rounder than others.
Big Fun: He portrays himself as this with self-depreciating humour, a sunny disposition, a happy smile and a generally avuncular approach to things (with a bag of goodies)...
Fat Bastard: Although, this is what he's hiding as his true self. Somewhat subverted in his second appearance, as he's lost a lot of weight and looks much more trim. Yet, he's a hundred times the bastard he was before, not to mention quite a bit more... unhinged.
The Bus Came Back: Guess who is the boss that poisoned most of Class E on the island?
Dissonant Serenity: Takaoka's always grinning, whether he's handing out pastries, revealing his ridiculous training schedule, or violently attacking contrary students.
Drill Sergeant Nasty: Has a "9-sticks-to-one-carrot" philosophy, is more like a dictator than an officer, and "accidentally" leaves a picture of the soldiers he's tortured in front of Karasuma. And he's always smiling.
The End Justifies The Means: Takaoka's extremely harsh (if not downright impossible) training schedule will be worth it if just one student survives and succeeds in killing Koro-sensei because Takaoka will become famous for training the assassin and then Karasuma will finally acknowledge his superiority!
A Father to His Men: He even said that the student would be like his own children, just like his previous trainees. Yeah, as if! He would make your life a living hell if you didn't listen to your "father".
Faux Affably Evil: He pretends to be a nice "father" to his disciples, but soon he reveals that he's a bastard.
Go Mad from the Revelation: Everything about his duel with Nagisa, from the disarming smile, the knife that almost killed him, and the resulting humiliation drove him vengeful and psychotic. After Nagisa wins their second duel, he shows Takaoka the same smile before zapping him unconscious. It's very likely that this wiped away whatever was left of his sanity.
Good Scars, Evil Scars: He scratches his skin a lot after losing to Nagisa, which becomes almost an obsession.
Green-Eyed Monster: He's was incredibly jealous of Karasuma-sensei, as Karasuma was the most talented member of their unit in the JSDF and quickly rose above him. He hopes that if he turns Class-E into the heroes who will defeat Koro-Sensei, then he'll also become a hero, and finally be able to order Karasuma around.
Knight of Cerebus: When he shows his true nature, the story shifts from a fun, uplifting comedy into the darker, more serious themes of assassination. This goes double for his involvement during Class 3-E's island vacation.
Not So Stoic: Takaoka's Dissonant Serenity is shattered in chapter 41 courtesy of Nagisa. His grinning gives way to shock, then mind-numbing fear, and finally frothing rage.
Obviously Evil: When he's introduced, there are some hints that he's not as nice as he appears.
The Rival: Takaoka was this to Karasuma in training.
Sadist Teacher: He's more akin to a drill sergeant than a teacher, instituting a ten period class schedule, most of which consists entirely of training, and isn't above smacking any disagreeable student (girls included) around.
Sore Loser: He doesn't take his defeat by Nagisa well. He's convinced that Nagisa cheated during their first duel by using an "unskillful, cowardly sneak attack" and tries to beat him up over it. Twice. Both attempts fail spectacularly.
Would Hurt a Child: He uses violence against his students/disciples to suppress them. He knees Maehara in the stomach when he complains about their new training schedule and planned to beat the crap out of Nagisa to subdue the students once and for all. After his loss against Nagisa, he returns to poison the students with a deadly virus and destroys the antidote to make sure that they die slowly and painfully. He also tries to kill Nagisa himself when they finally confront him.
Would Hit a Girl: His violence isn't restricted to the boys. He fiercely slapped Kanzaki when she defied him, almost knocked-out Kurahashi (Karasuma stopped him at the last second), and later wanted to burry Kayano with Koro-sensei in cement and Anti-Sensei material.
Walking Spoiler: He was first introduced as a Nice Guy, even though it was early implied that he's not as nice as he acts. Also, he returns as the mastermind of the Hotel Arc.
Well-Intentioned Extremist: No matter how horrible, his actions are all ultimately to save the world from destruction at the hands of Koro-Sensei. Later subverted when that simply becomes his excuse to take revenge on the class.