[-] Instructor Corp #13458180

members (measured 13 Oct 2026, 03:38 UTC)

28 December 2021

created (per Roblox API)

10 August 2026

first measured 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 We do not publish numbers we have not measured.

Measurement log — every members count we have recorded
Measured (UTC)	Members	Change
30 Aug 2026, 03:28	2	first reading

Ownership

Owned by @VividSin 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

@VividSin — Holder (rank 255) terminated

@sixsn — [CIC] Commander-in-Chief (rank 253)

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

Rank structure

Holder1

[DOD] Department of Defense0

[CIC] Commander-in-Chief1

[FMS] Fallen Mafia Staff0

[CG] Commanding General0

[DCG] Deputy Commanding General0

[CO] Commanding Officer0

[XO] Executive Officer0

[DSM] Divisional Sergeant Major0

[CI] Chief Instructor0

[HI] Head Instructor0

[Ll] Lead Instructor0

[SI] Senior Instructor0

[I] Instructor0

[JI] Junior Instructor0

[PII] Phase II Candidate0

[PI] Phase I Candidate0

Member2

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.

SCP | Roleplay Community#5479038 · 2 shared members

1,268,838

Fallen Mafia#7704603 · 2 shared members

2,027

Sin™#1140556 · 2 shared members

1,093

United States Coast Guard #3928925 · 2 shared members

359

[-] BB Entry Academy#12854117 · 2 shared members

[-] Officers Academy#14352120 · 2 shared members

[-] Internal Investigations Division#14263521 · 2 shared members

[-] Honor Guards#15790282 · 2 shared members

[+] Office of the Inspector GeneraI#32839398 · 2 shared members

[-] 23rd Reconnaissance Battalion#11266677 · 2 shared members

Roblox#7 · 1 shared members

13,510,752

⨯ Small World Games#17140361 · 1 shared members

10,075,209

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.