Ultra Marinesᅠ #32477494

60

members (measured 14 Oct 2026, 13:08 UTC)

31 May 2023

created (per Roblox API)

10 August 2026

first measured by this register

Game fan groupsENWarhammer 40kRoleplayFandom

Description

𝐋𝐄𝐆𝐈𝐎 𝐗𝐈𝐈𝐈 𝐔𝐋𝐓𝐑𝐀𝐌𝐀𝐑𝐈𝐍𝐄𝐒 “COURAGE & HONOR" The Ultramarines Legion stands as a shining beacon of order and excellence within the Imperium of Man. Under the leadership of their Primarch Roboute Guilliman, they are the epitome of the virtues of discipline, strategy, and organizational mastery. Clad in their iconic cobalt-blue armor, they are a symbol of steadfastness and unwavering loyalty.

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

Membership history

Growth

2 measurements spanning 55 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 60–61 and does not start at zero.

Measurement log — every members count we have recorded
Measured (UTC)	Members	Change
5 Oct 2026, 08:54	60	-1
11 Aug 2026, 00:16	61	first reading

Ownership

Owned by @SiydotHolder 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

@SiydotHolder — Holder (rank 255)

Agonis (@Onyxnovuh) — Primarch (rank 14)

red_ICE (@Jj51474) — Legionarius (rank 3)

LopKrotomatic (@Lopersrf) — Legionarius (rank 3)

gov (@ImperialScrim) — Legionarius (rank 3)

Kristoff (@Kristoifi) — Legionarius (rank 3)

Multicam (@STK_Casual) — Legionarius (rank 3)

@sissymm — Legionarius (rank 3)

Moonki (@DaManChillzzz) — Legionarius (rank 3)

CloutedVax (@XboxPepper2) — Legionarius (rank 3)

hyhhgbnbg (@Wihelm11Kaiser) — Legionarius (rank 3)

@AkihikoArasaka — Legionarius (rank 3)

Acenasty (@Opalpoo21) — Legionarius (rank 3)

Redrone125 (@redrone125) — Legionarius (rank 3) terminated

Jack_Windsor (@Jackizzy9O9) — Legionarius (rank 3)

@YOLO_Blackhawk — Legionarius (rank 3)

Astrea (@AstreaIsWack) — Aspirant (rank 1)

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

Rank structure

Holder1

Emperor of Mankind0

Primarch1

First Master0

First Captain0

Captain0

Honor Guard0

Lieutenant0

Veteran Sergeant0

Sergeant0

Legion Ancient0

Legion Specialist0

Veteran Legionarius0

Legionarius57

Calth High Guard0

Member61

Aspirant2

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.

Imperium of Мankind ᅠ#1003078 · 10 shared members

「 IoM 」Adeptus Astartes#33233569 · 7 shared members

Wiggity.#12836673 · 6 shared members

(学乱) Gakuran#416091513 · 6 shared members

The Great Empire of Nord#10142222 · 6 shared members

The Roman Empire ᅠ#6124305 · 5 shared members

ᅠ Senatus Populusque Romanus ᅠ#4165387 · 5 shared members

The Grim Darkᅠ#33233054 · 5 shared members

Roblox#7 · 4 shared members

SCP | Roleplay Community#5479038 · 4 shared members

Stateview Correctional Facility. ∞#5025380 · 4 shared members

The Nighthawk Imperium#1174414 · 4 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.