Emi Fukukado

Emi Fukukado, also known as Smile Hero "Ms. Joke" (スマイルヒーロー ジョーク), is a Pro Hero and a teacher of 2nd year, Class 2 at Ketsubutsu Academy High School.

Appearance
Emi is a young woman with an athletic build and chest-length hair, which is portrayed as cyan in the manga, but sea green in the anime. Her eyes are inverted in color, meaning her pupils are light whereas her irises are dark. Her most predominate feature is her constant smile. Her hero costume consists of a bandana around her head, sleeveless tank top, thick fighting gloves with metal cuffs, and vertically striped pants which resembles part of a clown's attire. Around her waist is a belt adorned with smiles. While in active duty, her costume also appears to feature a gas mask.

Personality
Emi is cheerful, outgoing, and positive; She is also rather forward with her thoughts as she constantly flirts with Aizawa without embarrassment.

Though she has a playful and fun personality, Emi does have a more mature and focused side, especially when it comes to teaching her students, as seen through her commentary with Aizawa throughout the Hero License Exam. She appears to care deeply about her students and understands the drive many young people have to become heroes.

Emi also appears to have a general disdain for U.A's teaching methods and the elitism that comes from their prestige. The best example of this is when she criticized U.A. for failing to recognize Hitoshi Shinso's potential as a hero, though she does display this distain again during the Hero License arc, when she scolds Aizawa for suggesting U.A. and other hero schools are cut from different cloth.

History
Emi worked at an office near Aizawa's office. Whenever there was trouble, they would assist each other. At some point in her adult life, she also began working as a teacher at a pro-hero high school.

Hero License Exam Arc
On the day of the Provisional Hero License Exam, Emi excitedly walks up to Class 1-A and Shota Aizawa, having apparently met him before. Aizawa recognizes her, though he is less than excited to see her. Emi then reveals to Class 1-A that her and Aizawa used to work together as partners, even claiming that the two of them had feelings for each other, even though Aizawa denies the latter claim. She then calls her class over to meet Class 1-A, revealing that she teaches second-year students at a Ketsubutsu Academy High School.

While Emi's class appears excited to meet U.A. High School students, some of them, namely Yo Shindo, appears to have ulterior motives. Once, Emi instructed her class to gets ready for the exam and change into their costumes. As the students were getting changed, she asked Aizawa if he told his class about what happens every year at the Hero License Exam, to which he replied no.

After that, Emi and Aizawa are seen sitting together on the bleachers of the Exam area, watching their respective students as the exam unfold, with Emi attempting to flirt with and tease Aizawa throughout the entire event. Emi comments on how every year, all the other schools gang up against U.A. students, though Aizawa insists that this does not matter. Emi noticed that Aizawa has not expelled any of his pupils yet, and asks him if he is particularly fond of this year's class. While Aizawa replies no, Emi did not seem convinced by his answer.

After the exam concluded, a substantial portion of both Emi's and Aizawa's classes have passed, leading to Emi suggest carrying out joint training with both classes in the future; Aizawa agrees.

Quirk
Outburst (爆笑): Emi's Quirk forces others to laugh which impairs their cognitive and motor skills.

Shota Aizawa
Emi has known Aizawa for a long time; their workplaces were once close to each other and as a result, whenever there was trouble, they would assist each other. While Emi likes Aizawa and is friendly towards him, Aizawa is indifferent towards her and does not find her sense of humor amusing. For example, when she joked that they became lovers while they were working together, Aizawa immediately denied her statement. Even though Emi annoys him, Aizawa appears to be tolerant towards her optimistic attitude and shows a willingness to work with her. Emi is determined to get Aizawa to laugh using her quirk or otherwise, however, Aizawa is often one step ahead of her and erases her quirk before she gets the chance.

Trivia

 * Her surname Fukukado (福門), translates to "fortune gate", and her given name Emi (笑), is written with the character for "laughter". Her name is a play on a Japanese proverb about fortune coming to those who laugh.
 * Ironically despite his personality, she seems to be romantically interested in Shota Aizawa. Though she might just be joking with him such claims are unconfirmed.
 * Ms. Joke's general aesthetic seems to be inspired by the DC supervillain, the Joker.
 * Both have a clown/comedy theme and have green hair
 * Emi's quirk, Outburst, is similar to the effects of Joker Venom
 * Their aliases- Joker and Ms. Joke- sound extremely similar
 * She also seems to be inspired by The Comedian from Watchmen.
 * She wears a belt of smiley faces, an image that is showed throughout the comic, and heavily associated with The Comedian
 * Like the Joker, her name alludes to the Comedian
 * Ms. Joke makes an appearance in Chapter 34 wearing a gas mask.