Z2-B4

 is a group within Zero Project. The theme of the group is personality.

The first line-up was announced on February 26, 2023.

The group is currently inactive.

Current Members
N/A

Former Members

 * Azuma Mashiro (東茉白) (Founding Member)
 * Kanekawa Miyabi (金川みやび) (Founding Member)
 * Kusunoki Anzu (楠あんず) (Founding Member)
 * Kururugi Yun (枢木ゆん) (Founding Member)
 * Shirasaki Hikari (白咲ひかり) (Founding Member)