Baek Minseo

On January 28, 2019, Baek Minseo made her debut in the first generation of the kids girl group CoCo under Fancy Factory with the release of their debut digital single "Talk Talk". She left the group sometime in late 2019 while the group released their second single with their second generation members. In November 2020, Minseo rejoined CoCo to form the third generation of the group.

On June 29, 2021, CoCo announced that it had terminated contracts with several members, including Minseo, who has now effectively left the group and agency.