KILLER ON COPPER-9 #568986537

members (measured 22 Oct 2026, 12:31 UTC)

17 April 2026

created (per Roblox API)

13 August 2026

first measured by this register

Game studiosENgame developmentofficial groupcopper-9

Description

we are the Official Creators of Killer on Copper-9. OFFICIAL.

Written by the group; not a statement by this register.

Membership history

Growth

2 measurements spanning 51 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 25–26 and does not start at zero.

Measurement log — every members count we have recorded
Measured (UTC)	Members	Change
20 Oct 2026, 02:10	25	-1
29 Aug 2026, 20:13	26	first reading

Ownership

Owned by @bananabeesP 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

@ZypherWav3 — Devs (rank 1)

@bananabeesP — Devs (rank 1)

@Doctor_Ph0nk — Member (rank 1)

GoofyGoober (@yoyospin1425) — Member (rank 1)

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

Rank structure

Owner1

Member26

Devs9

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.

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Yielding Arts#12013007 · 2 shared members

25,009,716

LSPLASH#3049798 · 2 shared members

24,150,084

more awesome games yo#17395026 · 2 shared members

4,612,626

Tze's Shenanigans#16357742 · 2 shared members

4,199,691

The Fartering Few#8532621 · 2 shared members

372,846

Team Red Ring#33304839 · 2 shared members

191,024

Astros junkyard#932929217 · 2 shared members

2,091

Broken Souls Development Team#340094273 · 2 shared members

844

Dreamland Massacre#473316217 · 2 shared members

Catalog Avatar Creator#15102943 · 1 shared members

45,392,659

Wiggity.#12836673 · 1 shared members

31,052,572

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.