Biography
BILLIE IDLE®︎ were a Japanese idol group active from 2014 to 2019. The group was initially formed by ex- BiS members First Summer Uika and Hirano Nozomi, managed and produced by the fashion designer NIGO. Their gimmick was that they were idols who are "NOT IDOLS". In their final years of activity, they were also joined by BiS' founder, Pour Lui (see: プー・ルイ).
Watanabe Junnosuke served as a joint producer until sometime in 2018 - so while Watanabe was being paid to advise but not outright have creative control over NIGO, they weren't a full WACK group.
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alternative tag: billie idle
Biography text from Last.fm, available under CC BY-SA.