B1A4 (비원에이포) #3930303
MusicENK-popMusicFan Group
Description
B1A4 (비원에이포) is a South Korean boy group formed by WM Entertainment. The group debuted on April 23, 2011 with the single "O.K" from the EP, "Let's Fly," after being introduced to the public through a webtoon. The group consists of 5 members; Jinyoung, CNU, Sandeul, Baro, and Gongchan.
Written by the group; not a statement by this register.
Membership history
Growth
Growth history is still building. We hold one measurement for this entry. A trend needs at least two, taken days apart — so this will fill in on its own rather than being estimated. We do not publish numbers we have not measured.
| Measured (UTC) | Members | Change |
|---|---|---|
| 13 Aug 2026, 04:51 | 28 | first reading |
Ownership
Owned by @koospjm as measured.
Members we’ve seen
@koospjm — Owner (rank 255)
A sample — only members this register has independently measured, highest rank first. Not the full roster.
Rank structure
Roles and per-rank member counts as Roblox reports them (rank 0 = guest … 255 = owner).
Related groups
Groups whose measured members overlap with this one — a sample from our membership graph.
Open data
Download this group’s measured record — free to reuse with attribution: membership history (CSV) · full record (JSON)
Each file carries its licence and retrieval time inside it, and is generated from the same measurements shown above.