Kyoka Jiro

Kyoka has a pragmatic, unenthusiastic, blunt, and teasing personality that is mostly shown to those she finds irritating or those like her classmate Denki Kaminari, whose cluelessness makes him an easy target for her snarky comments. Kyoka is not always like this, though, as she does enjoy socializing with others, in which case she is usually nice and friendly, most notably with Momo Yaoyorozu and the other girls in her class.

Kyoka often gesticulates through her elongated earlobes in place of her hands.[8] She can also be quite aggressive, evidenced by when she uses the Earphone Jacks her Quirk provides to physically punish people when provoked or to keep them in line via jabbing them in the ear or neck, most notably Denki and Minoru Mineta when they make inappropriate comments. During Hero activities, however, Kyoka prefers smarter approaches, usually by coming up with a plan herself. She is surprisingly organized and makes sure to convey her ideas in a way that's easy to understand.

Despite the fact that she comes off as cold and indifferent, Kyoka also has a much more sensitive side, being very defensive towards her friends, empathetic with others' feelings, and getting flustered when her talents and capabilities are brought up.[9][10][11]

While Kyoka is hard to unnerve or surprise, she is afraid of horror-based activities and has an aversion to nudity. She is a bit self-conscious about her looks and style as well, becoming noticeably upset when she was not seen as attractive by Minoru, and attacking Denki and Yuga Aoyama for commenting that her dorm room was "unladylike".

Like her parents, Kyoka has a major interest in rock music and owns several instruments which she is able to play to some extent. However, she seemed to be somewhat embarrassed about her interests at first, because she perceived them as completely unrelated to heroism, but thanks to encouragement from a few of her classmates, most notably Denki, and a great presentation during the U.A. School Festival, she was able to outgrow that mindset.

During the Final War, Kyoka shows her growth as a Hero when she and Fumikage Tokoyami face All For One in the sky, aided by Hawks. Despite feeling intense fear from All For One's presence, recognizing the overwhelming evil that Izuku has been facing this whole time, Kyoka manages to power through. She dismisses All For One's derisive comments about her being one of the "gnats around One For All", expressing her rage towards the Demon Lord for targeting and hurting Izuku and Yuga Aoyama.

Although she lost an ear in the process, Kyoka's efforts helped force All For One on the defensive, allowing him to almost be beaten by Endeavor. Kyoka then aids Ochaco Uraraka and Tsuyu Asui in stopping Himiko Toga and her rampaging army of clones, and much later, arrives to help Izuku during the final battle alongside the rest of her classmates and fellow Heroes.

Eight years later, Kyoka has graduated from U.A. High School, becoming a fully-fledged Pro Hero. Her friendly and supportive attitude has remained, frequently hanging out with Denki who started his Hero Agency next to hers. Outside of her hero work, she has also become an avid musician and teaches Eri how to play bass during her days off while also attending the latter's band performances.