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@MasterJM_09

Rin @MasterJM_09 #411071038

8 October 2017
account created (per Roblox API)
8 Sept 2026, 10:54
last measured (UTC)

Username record

@MasterJM_09 — observed 8 September 2026

Roblox’s API lists prior usernames without dates; the dates above are when this register observed each name, which bounds — but is not — the change date.

Groups owned (as measured)

General Student Council - Project Kivotos#295942063
15
My Fan group and more!#5411524
8
Full Zenith Works#35705224
6
Greywell Security Consulting#128441714
6
New People's Party of Nevada#15695180
3
Gehenna Academy - Project Kivotos#232887970
2
Silverback Repeating Arms#33042398
2
Kronos School of Journalism - Project Kivotos#284833040
1
Red Winter Federal Academy - Project Kivotos#807940467
1
Arius Branch School - Project Kivotos#392448583
1
Millennium Science School - Project Kivotos#307341860
1
Highlander Railroad Academy - Project Kivotos#724884548
1
Trinity General School - Project Kivotos#220340091
1
SRT Special Academy - Project Kivotos#776786884
1
Abydos High School - Project Kivotos#103922679
1
Valkyrie Police Academy - Project Kivotos#1049003159
1
Wild Hunt Academy of Arts - Project Kivotos#873763503
1
SCHALE - Project Kivotos#801717719
1
Hyakkiyako Alliance Academy - Project Kivotos#1018583812
1
The Red Army [Anomic]#15688818
1
Odyssey Maritime School / OMS - Project Kivotos#537694999
1
Shanhaijing Senior Secondary School - PKT#140250558
1

Open data

Download this user’s observed record: username history (CSV) · record (JSON)

Also a member of

Chillz Studios#2782840 · 🌟Royal Member🌟
18,518,233
Sol's Studio#8509669 · [Gamers]
12,619,391
Car Crushers Community#2726951 · Skilled Crusher
8,630,820
Rubicon South#959433345 · Member
6,055,042
Pilot Training Club#2794513 · Airline Pilots
3,830,043
USSF - United States Special Forces#22025 · [6] Staff Sergeant
3,412,060
Pinewood Builders#159511 · Member
2,927,626
uma racing Community#376874468 · Member
1,736,916
Virtual Valley Games#1241210 · VVGer
1,694,798
Car Crash Simulator Official Group#3338997 · Fan
1,615,346
SEA Military#2648601 · [MR3] Petty Officer
1,200,951
Innovation Inc.#157764 · Member
1,128,123
Blox Studiо#4843020 · Member
974,211
むありあ放送局#15434573 · ゲスト.
909,811
Defoko's Lab#914246270 · Test Subject
850,812
generic roleplay gaem fanclub.#5574524 · fan.
736,430
[TCU] The Computer Union#8513762 · Civilian
643,009
Ninestar Games#11300992 · Member
454,752
Pile of Garbage#17306947 · Litter
452,867
memes studioz#32429008 · known people
412,718
The Glorious Robot Army#11872496 · [1] Troop
401,644
Dev Noob Studios#34131223 · Member
333,937
Obakyu Electric Railway official community#32691673 · メンバー/Member
267,745
Pinewood Builders Security Team#645836 · Trainee
240,088
Plasma Inc.#4192306 · Member
222,195
「SBO:R」Sword Blox Online: Rebirth#5683480 · Community
222,060
Survive Homelander Community#32964299 · Member
200,150
Secret Monkey Squad#16977407 · Member
186,893
Innovation Security#901313 · [LR]In Training
168,565
Black Eagle Industries#447846 · 🐤 Player
151,085
Pinewood Emergency Team#2593707 · Rescue Hero
143,117
Runker#4575704 · Member
141,714
Black Cat 1984#11355618 · Regulars
137,721
Grand Hawk Studios#13466988 · Booster
116,453
[PET] Hazmat Team#4246813 · Hazmat Trainee
94,600
The Mayhem Syndicate#4890641 · Recruit
89,288
[PET] Fire Team#4246810 · Firefighter
79,829
Pinewood Builders Aerospace#926624 · Member
77,165
AniPhobia Studios#10668871 · Verified
72,569
[PET] Medical Team#4246815 · Medical Team
67,942
Polarstar Studios#5615635 · Members
40,610
Plasma Security Division#5114770 · Trainee
37,742
[大日本帝国軍]Imperial Japanese Army#14557011 · 二等兵
30,077
SCP: Broken Dawn#16196784 · Member
27,815
H&K GAME#787681760 · Member
25,134
좀비 시티 [Zombie City]#12176173 · 멤버 [Member]
17,492
「SBO:R」The Black Knights#5717222 · Members
10,891
OP//RED_ARCHIVE#6359563 · 9th Fleet Helper
5,031
Shin Taisen Works#35981642 · Known Gang
4,608
[SEA] United Nations Peacekeeping#32735663 · [VOL] Volunteer
3,879
Ecliptics Studio#34496477 · testers
3,675
Girls und Panzer |Tankery|#6459634 · Guest/Signed Student
3,268
[SEA] Scuba Operations#15118555 · [OR-2] Junior Operative
1,322
DZR:F Group#16538818 · Player
1,276
JK Tactical#6745530 · Recruit
640
Archives Games#16053665 · Developer Team
555
Mxtcha's Goofy Shop#10300254 · 𝕄𝕖𝕞𝕓𝕖𝕣
415
[SEA] European Union#16443358 · [R] Recruit
348
| Armed Forces Of Dominia |#366836384 · │Civilian│
275
Da Pink Peoples#7758284 · ♡ Pink People ♡
240
TECHA#13537740 · 𝐿𝑜𝓎𝒶𝓁 𝒸𝓊𝓈𝓉𝑜𝓂𝑒𝓇
153
CLOUDX GUILD#4822750 · [E3] Corporal
140
Ellison Technologies#34417970 · Research Associate
120
Potato Corporations#14022549 · NOTICED🥔
104
RYOTOS28 WORLD NETWORK#591649671 · Operator
87
Soulars_ Stream#2976939 · Friends
79
Joman's Hangout#7232658 · General
77
Anomic Insurgency#11590630 · Junior Insurgents [LR]
63
EpicBlox Ent#5535813 · Youtubers
54
MaDZKoolAid Clothing Store#16507879 · Customer
34
addison friends#6876547 · addison's friends
33
Ｗｉｌｌｏｗ ＴｒｅｅＨｏｕｓｅ 唄安#11931773 · Member
22
The Uni Fortnite squad#5659513 · Member
19
Felix's forest#10458224 · Silly ¡! ❞
16
BahBinka Family#7596406 · Member
16
Multimedia Games Presents..#34234935 · Developer
15
Mechty Project#383147046 · Developer
13
The heavens of jflower#12917779 · Member
13
The-Step-chickens#6396533 · Peasant rank fr
12
Furbdbxb#33546662 · Member
10
Darkbluejm's Group#4180685 · no love member!!
10
[SEA] Rangers Regiment#33512574 · [🔑] Enlisted Soldier Key
9
my brother forced me to make this#11043315 · Member
8
Fox's Gaming Group#7598512 · Member
7
Strawberry Dinosaurs#10456184 · Member
6
Roblox_Police your local enforcers#12222528 · Captain
5
Anomic Insurgency Red Guard#14193776 · Red Guard
5
『CXG』Research and Development#6622097 · Test Subject
4
Dogs are the best cutest thing in the world#16236735 · Member
3

Membership and rank as measured from this user’s public group list.