gugudan OGUOGU (구구단 오구오구; or simply OGUOGU) was the first subunit of the girl group Gugudan. They debuted on August 10, 2017 with their first digital single "Ice Chu".
The subunit went on a hiatus after Hyeyeon's departure from the main group on October 28, 2018, and officially disbanded on December 31, 2020, following Gugudan's disbandment.
