Ikebukuro Criminal Black Members (池袋クリミナルブラックメンバーズ, Ikebukuro Kuriminaru Burakku Menbāzu?) or simply ICBM is a biker gang.
They wear white bōsōzoku style clothing with words the initials ICBM at the top of the front upper left pocket. At the back of their uniform are their full group name "Ikebukuro Criminal Black Members".
- Tokyo Revengers Manga: Chapter 51.