The group was composed of six members: Eunchae, Yoona, Rainie, Cyan, Choyeon, and Zin.

[1] In 2018, Eunchae (then representing Million Market) and Choyeon competed in Produce 48, finishing 32nd and 50th, respectively.

[3] It was revealed in an interview with Ryan S. Jhun, the group's producer and CEO of A Team Entertainment, that BugAboo was originally scheduled to debut in 2020, but it was postponed and then moved to the fall of 2021.

[citation needed] The group went by the tentative name A Team Dream, and they covered songs on their now-defunct YouTube channel.

[7] Two days prior to the release, they held a special debut showcase called Prick or BugAboo, which was live telecast on SBS MTV.