〈SEASON 1〉 Formed on March 25th, 2015, by Ladybeard, Rie Kaneko, and Rei Kuromiya. Their music video "Nippon Manju" released on July 15th of the same year was spread all over the world, and they suddenly appeared on world music scene putting forward original genre “Kawaii-Death” that fused J-POP and death metal vocals. In September of the same year, they dared solo concert in New York,US. They sold 600 tickets immediately. Afterwards, they advanced steadily by releasing in succession "Age Age Money" "Renge Chance!", and they dared concerts all over the world such as US, UK, Germany, and Malaysia. They caused big sensation not only in the music industry, and they was reported in Forbes, a world-leading economic magazine.On April 15th, 2016, they announced that they would go on hiatus in their solo concert(at Shinjuku BLAZE, mobilized 800 audience). On July 30th of the same year, Ladybeard leaved LADYBABY.
＜第二期 "The Idol Formerly Known As LADYBABY"＞2016-2017 LADYBABYの象徴とも言えるセンターの存在を失い活動継続は困難とされたが、2016年8月1 日、金子理江と黒宮れいによるWセンターアイドル「The Idol Formerly Known As LADYBABY」としての活動再開。同時にキングレコードからのメジャーデビューを発表する。激しさの中に10代特有のエモーショナルな空気を漂わせる音楽性と、ダイブ、モッシュ、サークルが出現するほどの激しいステージ、大人や社会に物怖じしない発言、そして2人の友情を超えた唯一無二の世界観は「れいりえ」の愛称で呼ばれ、若い世代から圧倒的な支持を得る。2017年11月17日、黒宮れいが突然の脱退。予定されていた全国ツアー、CDリリース等、以降の活動予定は全て白紙となる。
〈SEASON 2〉*The Idol Formerly Known As LADYBABY Though it seemed difficult to continue their activity without Ladybeard, poster person for LADYBABY, on August 1st, 2016,LADYBABY reunited as dynamic duo by Rie Kaneko and Rei Kuromiya, "The Idol Formerly Known As LADYBABY". At the same time, they announced debut with a major label, King Records. They obtained the overwhelming support from young fans because of their musicality that gave off an emotional atmosphere peculiar to teenagers in the intensity, their tough performance including stage diving, crowd surfing, mosh, and storm, their remarks without scary to adults and society, and a one-of-a-kind mood that transcends the friendship between them nicknamed "Rei-Rie".
On November 17th, 2017, Rei Kuromiya suddenly leaved. All subsequent activity schedules, such as the planned national tour, had been blank.
〈SEASON 3〉 On January 8th, 2018, Rie Kaneko became the only founding member announced that she would re-start LADYBABY and hold the audition. February 25th of the same year, "Nana Ikeda" who worked as a fashion influencer, "Emily Arima" who played in a band as a female screamer, and "Fuka Karasawa", who worked as high school idol, joined and they revived. They were reevaluated as "the strongest members ever", because of their intence, merry, and emortional musicality carried on since forming and various characters formed by four members. And they re-started world wide activity such as holding concert in Japan, US, Italy, Malaysia, and Taiwan. They achieved great successes in each country. "Haten ni Raimei" released on May 28th, 2019 reached record high such as the top of the Oricon daily chart and the 13th of Oricon weekly chart. But on October 29th, the same year, they announced they would go on hiatus again since decision of Rie Kaneko.They stopped workig indefinitely with the last concert held on January 13th, 2020 (at Ebisu LIQUIDROOM, mobilized over 1000 audience) and releasing the album "REBURN".
Rie From Tokyo JAPAN, born in December 18th The only founding member and leader of LADYBABY. Though her free-spirited and innocent character, her charm is her aggressive and sometimes overwhelming performance at stage. After becoming the current system, she began to demonstrate her multi-talented skills such as choreography, video director, and apparel design, and has grown to become the core of LADYBABY.
Nana From Osaka JAPAN, born in October 30th She was active as a fashion influencer since junior high school. Joined LADYBABY in 2018 by Rie Kaneko's own scout. Dynamic dance created from a small physique and edgy singing voice that makes full use of high-speed rap are now indispensable elements for LADYBABY. From her unique fashion sense cultivated over many years, she is also demonstrating her talent in LADYBABY's costume design and styling.
Fuka From Gumma JAPAN, born in October 12th She won the audition in the fierce competition and joined in 2018. She brought new atmosphere to LADYBABY with a natural idol sense and an innocent smile and healing. Although she is the youngest, she is most conpetitive and has the strongest guts.
Emily From Hyogo JAPAN, born in March 7th. Joined by audition in 2018. She is a quarter Australian, and Metal Screamer that makes full use of several types of death voices. She was also in charge of writing lyrics with the knowledge and sense she had cultivated by touching music since she was a child, and dramatically improved the musicality of the new LADYBABY. She has a good reputation not only for death growl but also for its long and clean singing voice.