95z, Maknae Line, BooSeokSoon: How K-pop Groups Nickname Themselves
SEVENTEEN has thirteen members. Spend ten minutes in the fandom, though, and you’ll hear about a lot more teams than one: 95z, 96z, 97z, Maknaez, BSS. None of those names appear on the official roster — and every single one of them is real, in the sense that fans, members, and even the company itself use them daily. K-pop groups don’t just have members; they have an entire internal map of units, lines, and duos, each with its own nickname. Once you learn to read that map, a whole layer of fan culture clicks into place.
The official end: mash the names together
Companies started the game themselves. When a label carves a subunit out of a group, the name is very often a syllable mashup of the members’ actual names. Girls’ Generation’s first official unit, TTS, is simply Tae(yeon) + Ti(ffany) + Seo(hyun). EXO-CBX is Chen + Baekhyun + Xiumin. TWICE’s Japan-based trio MISAMO is Mi(na) + Sa(na) + Mo(mo). And SEVENTEEN’s trio BSS — BooSeokSoon — stacks the members’ real names: Boo Seungkwan, Lee Seokmin (DK), Kwon Soonyoung (Hoshi).
Not every official unit name is a name-mashup, of course. Stray Kids’ in-house production trio 3RACHA (Bang Chan, Changbin, Han) has been writing and producing since before the group even debuted — the name is a hot-sauce pun that fans repay by calling the other members DanceRacha and VocalRacha, a split the group themselves performed under at the 2023 Billboard Music Awards.
Birth years plus a “z”
Here’s the fandom’s favorite trick: grouping members by birth year and attaching a “z” — shorthand that turns a birth year into a team name. SEVENTEEN is the canonical case: ‘95z (S.Coups, Jeonghan, Joshua), ‘96z (Jun, Hoshi, Wonwoo, Woozi), ‘97z (DK, Mingyu, The8), and Maknaez (Seungkwan, Vernon, Dino). What makes it remarkable is that these started as casual age groupings and then the company built an entire special album around them — 2020’s ;[Semicolon] builds four of its six tracks around exactly those units. Notice the overlap: Hoshi is in both BSS and ‘96z, DK in both BSS and ‘97z. The units aren’t fixed walls; they’re different lenses on the same thirteen people.
The pattern jumps across group boundaries too: the famous ‘97-liners’ — including BTS’s Jungkook, SEVENTEEN’s Mingyu, ASTRO’s Cha Eun-woo, GOT7’s BamBam and Yugyeom, NCT’s Jaehyun, and Stray Kids’ Bang Chan — are a cross-group friend circle that fans track like a supergroup that never releases music.
Lines: the group’s internal map
The other half of the vocabulary is “line.” Position lines sort a group by job: vocal line, rap line, dance line. Age lines sort it by seniority: the elder members are the hyung line (boy groups) or unnie line (girl groups), and the youngest cohort is the maknae line. BTS is where many international fans first met the terms — the hyung line vs. maknae line divide (Jin, Suga, J-Hope, RM vs. Jimin, V, Jungkook) is practically fandom grammar at this point.
Individual members collect nicknames the same way. Jungkook has been the “Golden Maknae” since RM coined it in a 2013 video, praising the then-teenager’s all-rounder skills. Pair nicknames stick just as hard: the Suga and J-Hope duo known as Sope has been a running fixture of official BTS variety content for years — see their Suchwita episode on BANGTANTV for the dynamic in full flow.
The fan-made end: chemi names
At the far end of the spectrum are names nobody at a company ever approved. Fans call them “chemi names” — short for chemistry — coined for duos whose dynamic fans love. Fans have called IVE’s An Yujin and Jang Wonyoung Annyeongz since their IZ*ONE era — a name fans read as a pun hiding both of theirs inside annyeong, the Korean word for “hello,” and one that still shows up in entertainment headlines as-is. LE SSERAFIM runs on them: Yunjin and Sakura are HotCoolz, Chaewon and Kazuha are Summerz — names the members themselves use openly. That’s the quiet truth of the whole system: the line between “fan-made” and “official” is porous, and names constantly migrate from fan chatter into the group’s own mouths — and occasionally all the way onto an album.
Why it matters (and where to watch)
Nickname fluency is fandom fluency. When a comeback teaser tags a unit you’ve never heard of, it’s usually one of these — and unit comebacks land on the artists’ official X accounts (with Weverse alongside for HYBE groups): SEVENTEEN, TWICE, BTS, Stray Kids, and yes, Girls’ Generation’s account is still there. Follow the accounts, learn the nicknames, and teasers stop being cryptic.
New here? Start with what a comeback actually is, find your group’s home on the fan platform directory, and see who’s up next on the August calendar.