Ikebukuro Criminal Black Members

Ikebukuro Criminal Black Members (池袋クリミナルブラックメンバーズ), or ICBM, was a biker gang based on Ikebukuro district.

Uniform
ICBM members wore white Bōsōzoku style clothing with the initials ICBM at the front left pocket of their uniforms. At the back of the garment is the gang's full group name "Ikebukuro Criminal Black Members."

Background
ICBM was a well-known and powerful gang in Tokyo as it was invited as spectators during Bloody Halloween.

Valhalla Arc
ICBM's leader, Hansen, was the overseer for the Bloody Halloween incident, but was humiliated by Kazutora Hanemiya, causing the gang's reputation to tank.

Tenjiku Arc
On the day of the fight between the Tokyo Manji Gang and Tenjiku, ICBM was easily taken apart by Tenjiku and mocked by Izana Kurokawa.