Mika is a slender woman who wears glasses with black frames. Her hair is straight, short, and dark purple in color, with bangs that fall to the right side of her face. In every instance where she has made an appearance thus far, she is shown wearing a collared shell top, a pencil skirt, and tights.
Like her daughter, Mika has plug-like earlobes.
Mika is a kind-hearted and encouraging mother, as she understood along with her husband when their daughter, Kyoka, stated that she wanted be a Hero rather than a musician like them. She understood that choosing a career path is a big decision and also told Kyoka that she can help others, both as a hero and with her music.
At some point, Kyotoku fell in love with Mika's musical talent, which led to them getting married and have a daughter named Kyoka Jiro.
Kyotoku and Mika's love for music was inherited by Kyoka who started playing instruments at a young age. Believing that her parents' desire was for her to follow their footsteps and become a musician, Kyoka was apologetic when she confessed that she wanted to be a hero. However, Kyotoku and Mika dismissed her apologies and expressed their support for Kyoka to pursue her dreams.
Mika is first seen alongside Kyotoku when he was confronting Shota Aizawa and All Might over their request to take Kyoka to live in U.A. High School, however Kyoka showed up and revealed that her father had already decided in advance to let her go. When they started bickering, Mika told the both of them to calm down.
Musical Talent: Mika is a skilled musician, although it's currently unknown which musical instrument she specialises in playing.
Earphone Jack (イヤホンジャック Iyahon Jakku?): Mika's Quirk gives her a pair of headphone jacks hanging from her earlobes. Assuming that her Quirk is the same as her daughter's, she can plug the jacks into objects and channel the sound of her heartbeat into them in the form of a super violent vibration. She would also be able to extend her earlobes several meters.
- Kyoka's name is composed by two syllables coming from each of her parents' names. In Mika's case, it's "香" (Ka).
- The surname, "Jiro", is actually from Mika's side of the family. It is not uncommon for the husband to take his wife's surname in real-life Japan.
- Mika's favorite thing is punk music.
- Mika also shares her birthday with Fourth Kind.
- Mika's English voice actor, Katelyn Barr, also voices Cow Lady and Ryukyu.
- Mika's Japanese voice actor, Akeno Watanabe, also voices Midnight and Izuku as a child.
|Families and Civilians|
|Asui Family||Ganma Asui • Beru Asui • Tsuyu Asui • Samidare Asui • Satsuki Asui|
|Bakugo Family||Masaru Bakugo • Mitsuki Bakugo • Katsuki Bakugo|
|Ida Family||Tensei Ida • Tenya Ida|
|Jiro Family||Kyotoku Jiro • Mika Jiro • Kyoka Jiro|
|Midoriya Family||Hisashi Midoriya • Inko Midoriya • Izuku Midoriya|
|Shimano Family||Mahoro Shimano • Katsuma Shimano|
|Shigaraki Family||All For One • Yoichi Shigaraki • Tomura Shigaraki|
|Shimura Family||Mako • Chizuo • Nana Shimura • Kotaro Shimura • Nao Shimura • Hana Shimura • Tenko Shimura|
|Takami Family||Tomie Takami • Keigo Takami|
|Todoroki Family||Enji Todoroki • Rei Todoroki • Toya Todoroki • Fuyumi Todoroki • Natsuo Todoroki • Shoto Todoroki|
|Tsukauchi Family||Naomasa Tsukauchi • Makoto Tsukauchi|
|Shield Family||David Shield • Melissa Shield|
|Soul Family||Eddie Soul • Rody Soul • Roro Soul • Lala Soul|
|Haimawari Family||Shoko Haimawari • Koichi Haimawari|
|Oguro Family||Iwao Oguro • Tamao Oguro|
|Skyline Family||Christopher Skyline • Pamela|
|Civilians||Aorio Kuraishisu • Daikaku Miyagi • Eri • Gantetsu • Hikage Shinomori • Hime • Ichimoku Samazu • Ikkaku • Jube Namimaru • Komari Ikoma • Kota Izumi • Luminescent Baby • Miyashita • Moko Tamashi • Public Safety Commission President • Rin Yaritezawa • Saito • Samuel Abraham • Sho • Takuto • Tamashiro • Taneo Tokuda • Teruo Hazukashi • The Mother of Quirks • Tsubasa • Untenmaru Kurumada • Yokumiru Mera|