The Black Hollow Institute #1034215203

10

members (measured 20 Oct 2026, 09:39 UTC)

8 November 2025

created (per Roblox API)

17 August 2026

first measured by this register

Membership history

Growth

2 measurements spanning 23 days, net -1. Dots are measurements; the straight line between them is drawn to join them, not to claim we know the path taken in between — snapshots are recorded only when a count changes, so gaps mean “no change observed”, never “interpolated”. The vertical axis spans 10–11 and does not start at zero.

Measurement log — every members count we have recorded
Measured (UTC)	Members	Change
12 Sept 2026, 06:48	10	-1
19 Aug 2026, 19:45	11	first reading

Ownership

Owned by @SCPsite_9 as measured.

Groups seen changing owner — the largest ever handed over and the most recent — are on the ownership transfers board.

Members we’ve seen

@SCPsite_9 — Holder (rank 255)

Undyne (@UndyneBernof) — The Administrator (rank 254)

Steak (@StekRBLX) — The Council (rank 253)

Polar (@BIGsmoke007gamer) — The Council (rank 253)

CrimsonBernof (@Shmep_pyy) — The Overwatch (rank 252)

Moony (@DaGoobieMoony) — Site Manager (rank 200)

Eul (@lowabe) — Level-5 (rank 100)

lockdownd (@Opuqide) — Class-D (rank 1)

House (@Housechicken06) — Class-D (rank 1)

A sample — only members this register has independently measured, highest rank first. Not the full roster.

Rank structure

Holder1

The Administrator1

The Council2

The Overwatch3

Site Manager1

Level-51

Level-40

Level-30

Level-20

Level-10

Level-00

Class-E0

Member11

Class-D2

Guest0

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.

Department of Observation and Investigatation#671177237 · 5 shared members

7

SCP | Roleplay Community#5479038 · 4 shared members

Special Containment Procedures Foundation [SCPF]#2760782 · 4 shared members

SCPF | Project Prometheus#938594331 · 4 shared members

Department of Planning and Engineering#84690992 · 4 shared members

4

Bee Swarm Simulator Club#3982592 · 3 shared members

[:] Nova Corporation#4965800 · 3 shared members

SCP:F ~ Special Containment Procedures Foundation#4743750 · 3 shared members

SCPF | Special Containment Procedures Foundation..#32722507 · 3 shared members

Internal Security Department | Project Prometheus#76995066 · 3 shared members

Order of Knowhere#927199266 · 3 shared members

4

(学乱) Gakuran#416091513 · 2 shared members

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.