|Sub-Unit||gugudan SEMINA | 구구단 세미나|
|Group||gugudan | 구구단|
|gugudan Fandom||Dear Friend | 단짝|
|Debut||July 10, 2018|
|Years Active||2018 – 2020|
PC: Jellyfish Entertainment
|First Week Album Sales|
|Album Release||Type||Album Title||Sales|
- The second sub-unit of gugudan.
(gugudan OGUOGU was the first sub-unit)
- The music video for the song SEMINA was filmed in Bali, Indonesia.
- All members participated in Produce 101.
- SEMINA was the nickname of Jellyfish Entertainment trainees (Sejeong X Mina X Nayoung) that fans called during Produce 101.
- gugudan disbanded on December 31, 2020.
|2||Kim Sejeong||A||A||Irony||Yanghwa BRDG||Fingertips|
|9||Kang Mina||A||A||I Don’t Know||Say My Name||24 Hours|
|14||Kim Nayoung||A||A||Break It||Yanghwa BRDG||24 Hours|
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