The band consists of six members: Gunil, Jungsu, Gaon, O.de, Jun Han, and Jooyeon.

[2] On November 1, JYP Entertainment released a teaser titled "Heroes Are Coming" hinting at a new group to debut.

[3] Jooyeon was officially announced as the group's first member, followed by O.de, Gaon, Jun Han, Jungsu, and Gunil from November 15–20.

[8] On October 19, the group announced their first solo concert "Stage ♭ : Overture" would be held on December 16–18.

[9] On October 30, it announced that Overload release would be postponed due to the national mourning period following the Itaewon Halloween crowd crush incident that happened a day earlier.