Z2-A4

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

The first line-up was on August 14, 2022.

Current Members

 * Ikeda Haruki (池田遥希) (Joined February 26, 2023)
 * Shirosaki Hitomi (白咲ひとみ) (Joined February 26, 2023)
 * Hanai Rurina (花井瑠莉奈) (Joined February 26, 2023)
 * Harukaze Rina (春風りな) (Joined February 26, 2023)
 * Riria (りりあ) (Joined February 26, 2023)

Former Members

 * POLLIE (ポリ; ) (Founding Member)
 * Fujimiya Karen (藤宮かれん; ) (Founding Member)
 * Ueda Moca (上田望夏; ) (Founding Member)
 * Tsukino Mizuki (月野みずき; ) (Founding Member)
 * Kusunoki Anzu (楠あんず; ) (Founding Member)