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Gugudan

South Korean girl group

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionAug 18, 2026
Entity authorityQ24694634 ↗
Source-derived summary

Gugudan (Korean: 구구단), also stylized as gu9udan or gx9, was a South Korean girl group formed in 2016 by Jellyfish Entertainment and the company's first girl group. The group debuted on June 28, 2016, with their EP Act. 1 The Little Mermaid. The group was composed of eight members: Mimi, Hana, Haebin, Nayoung, Sejeong, Sally, Soyee, Mina, and previously Hyeyeon until her departure from the group in October 2018.

Following two years with very little group activities, Gugudan disbanded on December 31, 2020.

History

Pre-debut

In January 2016, Nayoung, Sejeong and Mina were introduced as Jellyfish Entertainment's first female trainees on the Mnet survival show, Produce 101, where 101 female trainees from various companies competed to debut in an eleven-member girl group that would promote for a year under YMC Entertainment. After placing 2nd and 9th respectively in the final episode, Sejeong and Mina debuted as members of I.O.I in May 2016.

2016: Debut with Act. 1 The Little Mermaid

Despite denying earlier reports of Sejeong and Mina debuting in a 3-member girl group in June, Jellyfish Entertainment confirmed on June 7 that the two I.O.I members would debut within the month in what would be the company's first girl group. Because of YMC Entertainment's special terms in which I.O.I's members are allowed to do activities under their respective companies while I.O.I was on break or while the group promoted in sub-units, there were no complications with the plan.

Editorial summary

Begin with the source’s own compact description: “Gugudan” is south Korean girl group. The dossier treats that line as a proposition to test through Gugudan, South and Korean, not as a finished interpretation.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current lead gives the account dated anchors—2016, 2018, 2020—that can be checked directly. The linked authority record independently contributes the date 2016-06. For this dossier, Gugudan, South and Korean is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “south Korean girl group” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Aug 18, 2026. The linked authority identifier is Q24694634. VIAF identifies the subject as 171150468201904170522. 1 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 2016, 2018 and 2020.

Critical limits

The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

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  • Search vocabulary
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  2. Expand the search: follow Gugudan primary sources, Gugudan archive and Gugudan research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

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Source & attribution

This entry incorporates text from “Gugudan” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.