Azumanga Daioh Vol 1 Manga fandub

Yukari Tanizaki, also known as Yukari-sensei, is the girls' English and homeroom teacher (class 3), but a teacher with very unconventional methods and a rather close relationship with the class. Her students are casual enough to call her by her first name: Yukari-sensei, and some of them use the informal title Yukari-chan. Depending on her mood, she can be either a horrible tyrant or sweet. Yukari is impulsive and is also a notoriously bad driver, as evidenced by the horrid condition of her car, which the students have dubbed "the Yukari-mobile".

Chiyo Mihama, usually called Chiyo-chan, is a child prodigy, having skipped five grades to 10th grade (the first year of high school in Japan) at the start of the series, yet she is still at the top of the class. The other characters find Chiyo amazingly cute, but sometimes take advantage of both her youthfulness and her scholastic abilities.  Her diminutive stature leads to her having a lack of confidence, particularly in sports where she fears she is a burden to others. Chiyo is frequently viewed with envy by fellow students, initially because of her intelligence, but later also because of the discovery that her family is exceedingly wealthy.

(Note: She has more of a Brooklyn accent but that wasn't an option in the accent section)

Tomo Takino is extremely energetic and competitive, despite being nonathletic and a slacker at the same time. She randomly challenges people to competitions she can't win. She tends to irritate everyone around her, but especially Yomi, who has been her classmate since elementary school. Tomo's character is extremely impulsive and she never considers nor cares about the consequences of anything she says or does. However, on the occasions when Tomo has actually been inspired to concentrate on something, she has demonstrated that she is quite capable. 

Koyomi Mizuhara, commonly known as Yomi, is a grade-school friend and general antithesis of Tomo. She is the voice of reason of the series, carrying herself as the most mature and sometimes bitter member of the group. Though smart and athletic, she is constantly dissatisfied with herself due to her weight and is always trying various diets in an effort to become thinner. While usually functioning as Tomo's "straight man", she sometimes manifests a rather cruel sense of humor, such as tricking the cat-tongued Osaka into eating an extremely spicy croquette. Compared to most of her peers, Yomi uses more masculine Japanese speech patterns, especially when dealing with Tomo's antics. 

Sakaki is a tall, soft-spoken girl uncomfortable with her height and busty physique. Because she is so shy, she seldom speaks, and her reticence is misinterpreted as being mysterious, or cool. This reputation has been compounded by the fact that most of the school's sports teams try to recruit her every year in the story because of her natural athletic ability, but, for the most part, she has no real interest in sports. Sakaki is in reality a very emotionally sensitive person who holds a secret longing for all things cute. She loves animals, but the neighborhood cats dislike her. 

Minamo Kurosawa, also known as Kurosawa-sensei or "Nyamo" or "Nyamo-sensei," is a gym teacher at the girls' school. She is an old high school friend and rival of Yukari. Popular with the students, Nyamo is a nice person, and unlike Yukari she is generally in control.  Although they do have their fights, Minamo does try her best to take the high road and not let Yukari's antics get to her. However, Minamo has proven that she can be just as vulnerable to losing control as Yukari is. 

Kimura, also known as Mr. Kimura, is the only regular male character in the series. Kimura is a "creepy" and ephebophiliac Classical Japanese teacher, who openly admits he became a teacher to be close to high-school girls. He is constantly lewd and openly seeks excuses to "observe" girls, such as during swimming class or when they are measured and weighed by the school nurse. Most female students (and some faculty) intensely loathe him, but some male students admire his "sincerity". Despite his lewd activities, outside of school Kimura appears as a responsible and kind-hearted person. He has a beautiful wife and daughter, who love him despite his strange obsession; his wife even claims to find him very handsome and thinks "he's cool!"

Kaori, also known as Kaorin, is a girl infatuated with Sakaki, whose unrequited feelings are a frequent source of anxiety. Her friends seem mostly unaware of her crush on Sakaki, and it is unknown whether or not Sakaki would reciprocate. Even if Sakaki knows of Kaorin's affections for her, she never shows any sign of seeing her as anything other than a friend. While her given name is Kaori, she is almost always addressed by her nickname of Kaorin.  Kaorin is normally shy and sensitive to a fault, but frequently has been known to display a ferocious temper and is prone to extreme jealousy when Sakaki is involved. She can also be more than a little neurotic. 

Kagura is a later acquaintance, joining Yukari's class in the 2nd year.  She was originally in Nyamo's class and displays a very competitive spirit with her peers in all things (though she has little success in academics). She devotes most of her time to the swim team (which is why she has a tan most of the time) but is an all-around good athlete, and genuinely nice to her classmates. She has a slight obsession with Sakaki, whom she sees as an athletic rival. Like Tomo, Kagura tends to be quite impulsive in her actions (although unlike Tomo, Kagura is consciously aware of this and makes a genuine effort to keep it under control). 

Chihiro is a classmate and friend of Kaorin. Little is known except her name. When she appears, she is usually keeping Kaorin company, and she collaborates with her on some projects. Occasionally Chihiro bears the brunt of Kaorin's temper, without knowing why; it is unclear how aware she is of Kaorin's crush on Sakaki. 

Masaaki Ohyama is the girls' bespectacled male classmate in 10th grade. His English language writing skill surpasses his teacher at the time when he first enters high school. Yukari nominates him as a class representative, judging by the fact that he wears glasses. He also serves as the graduate representative in the very end.

A few random male students who had dialogue in the manga.

A few random female students who have dialogue in the manga.