The heroine of the story. Seika High's first female president, and is determined to turn it into a girl-friendly school. Her goal is supported by her dislike of men, which stems from her experience of her father walking out on their family, leaving them with a large debt which she tries to work off by being forced to take a part-time job at a Maid Cafe.
The Ace: She's very competent at nearly everything she does. Inversely, Usui tends to be better than her at almost everything (they're about equal in badassitude).
Dominatrix: While subverted, quite a few characters seem to think of her as a sadist. When two of her assailants turn out to be masochists who wanted her to punish them, she's understandably creeped out.
Drunk Personality Change: When Kanou hypnotizes her to be drunk, she is a lot more flirty and affectionate towards Usui.
Dude Magnet: Has eight named romantically interested in her and at least one girl. If she puts any effort into it, there are even more.
Effortless Amazonian Lift: She frequently carries Takumi around, much to his annoyance. In one episode, she crossdresses to enter a competition for a Butler Cafe; the first challenge is a race in which one partner must carry the other piggyback the whole way. Most of the other (male) competitors can't finish the course; Misaki comes in second.
Even the Girls Want Her: Other girls certainly enjoy ogling over her skills or looks (including the entire Maid Latte staff and her two friends). One even says she has a "prince-type character", and her Bifauxnen looks attract tons of chicks in episode 7. Helps that she looks great as a boy.
First Kiss: Props to Takumi for not wasting time and planting one on Misaki in the sixth episode!
Freudian Excuse: Her father left her family during their financial struggle and had never returned home. This, along with her observations on the boys at school, led to her to not liking men.
Lethal Chef: She claims that if someone teaches her, she can cook rather well. We mostly haven't seen it; her attempts at riceballs turned out round, perfectly smooth, and hard as rock, and other efforts range from "mangled" to "yuck."
Love Triangle: Between her, Takumi, and Hinata. Unfortunately for Hinata, the result isn't really in question.
Paper-Thin Disguise: Misaki tried to disguise herself and enter the all-you-can-eat contest at Maid Latte in order to help Erika; and everyone who knew her basically recognized her immediately. Even Hinata got suspicious by the end of it.
Straw Feminist: Subverted. She looks like one at first, but it's shown that her sense of justice is not limited to the girls. A lot of the boys just tend to be delinquents for no apparent reason and don't exactly inspire confidence.
Sweet Polly Oliver: When entering the butler competition, as well as the time she had to help Erika avoid a bad situation with a Stalker with a Crush customer. Basically, she gets made over Visual Kei-style into "Bisanki-kun" and has to enter a dessert eating contest.
One of the most popular boys at Seika High, Usui usually aloof about his surroundings. After he discovers Misaki in a maid uniform after school, he promises to keep her secret and as a result ends up very protective of her. It's eventually revealed that he is one quarter British, and that he has an older half-brother named Gerard- but he is an illegitimate child and that he is on bad terms with Gerard and the rest of the Walker family.
Big Damn Heroes: At times, especially when Tora Igarashi attempts to rape Misaki. In the anime, he also gets to come to the rescue when Misaki is ambushed at Maid Latte after closing by a pair of stalkers; he kicks a stun gun out of one guy's hand while Misaki handles the other one. It's subverted in the manga, however: he tries, but Misaki curbstomps both of them before he manages to do more than break in a window, and he only gets to help with the cleanup.
The anime may have it the same as the manga, as it's not clear who kicks the stun gun seeing as Misaki and Usui both have black shoes and pants on at the time.
But Not Too Foreign: Takumi is revealed to be this. Being the illegitimate child of an Englishwoman accounts for his blonde hair. His birth name is revealed to be Takumi Walker, but due to his unfavorable status within the family he abandoned the name at a young age and was later adopted into the Usui household.
Expy: He's a more aloof version of Tamaki Suou from Ouran High School Host Club. Both are handsome, popular, light-haired heroic bastards who are the child of a Caucasian woman and Japanese father. They also both wind up with Single-Target Sexuality for a brilliant student leading a double life involving getting dressed up. They both are also extremely skilled with a stringed instrument.
Not So Stoic: He's actually quite childish, prone to jealousy, and exhibits possessive tendencies underneath the typical cool-guy exterior. It's these slowly-revealed qualities that provide him with some truly stellar Character Development and Hidden Depths. Plus, the childish attributes almost always prove to be adorably endearing.
In the Beach Episode he went so far as to kiss Misaki on the back and claim it left a visible mark to make her too embarrassed to run around in a bikini. He also competed against her and Aoi in the volleyball tournament because he didn't want her to be the "beach queen".
Misaki's childhood friend, who came to the city just to find her. As children, Misaki kept on protecting him from bullies who picked on him for his fat figure. By the time he came back to the city from living with his grandparents in the country, he'd slimmed down from eating plenty of his grandparents' vegetables. He respects Usui and sees him as a Worthy Opponent for Misaki's affections. It's noted that he physically resembles Misaki's father.
Luminescent Blush: He ends up spending an entire New Year's Eve as red as a tomato when Suzuna confesses to him and declares that she will be far more overt about her feelings toward him from that point on.
From left to right: Shiroyan, Ikkun, and Kurotatsu
Three boys at Seika who initially resented Misaki's forceful methods of changing it. When they find out Misaki's job, however, they are instantly charmed and vow to keep her secret. They are now regulars at Maid Latte. Shiroyan and Kurotatsu were in middle school together and used to be delinquents.
Adaption Expansion: in the anime, they get a bit more screentime.
Heel-Face Turn / Villain Decay: It's really hard to believe, seeing them now, but at the very beginning of the manga, they were menacing figures that triedto rape Misaki upon discovering her secret, before Takumi blackmailed them into submission, and they became charmed by Misaki.
In Shiroyan and Kurotatsu's backstory, they used stopped being delinquents to prevent their mothers from crying.
One of Misaki's best friends, who looks to Misaki for protection against the boys. She has a tendency to fall in love without really knowing what the person is like. She's apparently rejected the captain of the rugby team approximately one hundred times.
Beware of the Nice Ones: In chapter 68 she explodes at her classmate because they were denying the fact that Misaki and Usui were dating.
Cherry Blossom Girl: She's got both pinkish hair and associated heavily with love, in addition to her name.
Another one of Misaki's best friends, and, like her, is protective of Sakura. She is very intelligent and good in math, but dislikes physical activities. She is a member of the school's flower arranging club. Like Sakura, she does not know about Misaki's parttime job. According to Sakura, she has an older brother studying in university and a younger sister in junior high who look a lot like her.
Berserk Button: Being dragged into stressful social situations by her friends (usually Sakura) gets her really pissed off, leading to almost drill sergeant-like scolding that intimidates both Sakura and Misaki.
Sexy SpectaclesFetish: appropriately enough, she was happily flirting with a guy with glasses during a class trip. When she bumps into him later without his glasses, however, she initially doesn't recognize him and becomes indifferent, claiming that "the glasses make up 80% of him."
Sakura's male counterpart in the "adorable" department.
The vice president of Seika High's student council, Yukimura is initially terrified of Misaki, but later on gets to see her kind, caring side and gets to be on fairly close terms with her and Usui. He enjoys administrative work, but isn't a very big fan of physical activities. He has a little sister named Ruri, who initially sees him as "sissy" and whom he tries hard to impress.
A withdrawn male student who is initially against Misaki as the student council president because of her aspirations of increasing the female population of Seika High. In order to sabotage her presidency, Kanou tries to hypnotize Misaki, Usui, and the student council into ruining Misakiís reputation. It is revealed that his gynophobic attitude comes from his mother abandoning his family when he was young and his father warning him to be wary of women. After being forced to work with girls by Misaki as punishment, he starts to get over his gynophobia and later becomes one of the president's allies.
Accidental Misnaming: The reason he lost the presidential election to Misaki by one point: everyone else either misspelled his name or put "that guy with the glasses," all of which were considered invalid.
Does Not Like Women / He-Man Woman Hater: Like Misaki, one of his parents (in his case, his mother) walked out on their family when he was young. But unlike Misaki, he isn't hostile towards them: he's terrified. She helps him get over it.
Straw Misogynist: To an extent, he's extremely uncomfortable around women and doesn't want them in positions of power, but this stems from a case of Parental Abandonment. He grows out of it once proven wrong.
When He Smiles: Kanou doesn't smile pleasantly that much. So during the scene where he smiles slightly and sincerely after putting a girl at ease on Misaki's behest, many a fangirl were stunned. Then they squeed. Hard.
A mysterious, beautiful teacher who transferred to Seika. At first, Misaki seemed to view her as a rival for Usui's affections but it's eventually revealed that she is, in fact in love with Misaki after seeing her strength and independence (it should be noted, though, that she's fallen in love many times before). She came to Seika to try to get Usui to transfer to Miyabigaoka under Igarashi Tora's orders. She has a fiance named Shinji.
I Want My Beloved to Be Happy: She intentionally prevents Cedric from following Misaki and Takumi out of the amusement park during their Christmas Eve date, allowing the two of them some time alone because she wants to make Misaki happy.
Maid Latte's cheerful manager, Satsuki is a kind, perceptive woman who adores Usui and finds Misaki cute. She has an unnamed older brother (Aoi's father) and a younger sister named Nagisa. She has a penchant for attending to different Fetishes, which include glasses, cat ears, and policewomen.
Satsuki's nephew, the son of her older brother. Ikuto recognizes "her" as a famous internet idol when "she" comes to Maid Latte for a visit. "She" becomes infatuated with Usui, but Misaki sees through the act and reveals Aoi to be male. He tends to be short-tempered and impatient, and is critical of Misaki's fashion tastes. His parents apparently disapprove of his crossdressing.
Green-Eyed Monster: Was not pleased upon realizing the more or less almost Relationship Upgrade between Misaki and Usui, but he later realizes he's happy instead of jealous at seeing Misaki with Takumi because it makes her look cuter, and whenever Misaki looks cute, it makes Aoi happy.
Spoiled Brat: He can come off as this, especially in the beginning.
Tsundere: Towards Misaki and the three idiots. Obviously he hates them and just wants to manipulate them. Or something. Riiiiight. To his credit, upon figuring out that he actually liked her he admitted it outright almost immediately and then continued on with the conversation.
An employee at Maid Latte. She possesses a rather maniacal side to her, and is annoyed at Misaki's resistance to her job. She makes a living from part-time work and does not have a full-time job. She takes working at Maid Latte very seriously, which causes friction between her and Misaki over the fact that Misaki is ashamed of working there.
Student council president of the high-class and expensive Miyabigaoka Academy. He initially presents himself as a gentleman who admires Misaki's reforms at Seika and offers her a scholarship to Miyabigaoka, but it's quickly revealed that he's a lecherous young man who's used to being able to manipulate people thanks to his wealth and his family's high social status. He also seems to be familiar with Usui's background. Maria Miyazono is an acquaintance of his, and he'd hired her to come to Seika to lure Usui to Miyabigaoka.
Yukimura's younger sister, who views Usui as a "prince" and doesn't see her own brother as manly at all. Later, though, she realizes that Usui's "princess" isn't her, and grows to accept Yukimura as her brother.
Satsuki's younger sister and Aoi's aunt. She's very hard on Aoi's crossdressing because her older brother (Aoi's father) disapproves of it. Her shop Ocean House isn't getting as many customers as she would like, so naturally the Maid Latte girls (+Usui) head to it to help, thus the Beach Episode.