arco @Mjc_o #1043545941
17 April 2019
account created (per Roblox API)
15 Aug 2026, 12:26
last measured (UTC)
Username record
@Mjc_o — observed 15 August 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)
Open data
Download this user’s observed record: username history (CSV) · record (JSON)
Also a member of
RCM Games#11867394 · Member
5,222,977Pilot Training Club#2794513 · Trainee Pilots
3,888,649Police Roleplay Community#4328109 · Community Member
2,227,943Vanity Studio#4063400 · Fans
2,099,327A.D. Games#32752100 · Members
2,029,352SEA Military#2648601 · [MR2] Sergeant Major
1,209,307markers epic memers#5218018 · Member
1,019,785dreamy™#4266525 · Supporter
885,641Project Viltrumites Community#34995941 · Members
866,266PLATINUM FIVE#4668709 · Member
518,738Ninestar Games#11300992 · Member
455,511FRP | Red Army#5224523 · Private
306,032Federation Of Robloxian People#4246982 · Group Member
245,633[λ] Half-Life Roleplay#2795144 · HLRP Member
215,523CMB | The Universal Union#4904885 · Recruit
175,711Beta Tech Gaming#9362096 · Group Member
162,941Eternos Digital#13005515 · Supporter
112,143Aviation Airfield HQ#11633733 · 👨✈️ - Pilots
94,160Zeta Medical Corporation#5763193 · Community Fan
86,467Badgers of Robloxia#5587275 · Casual
69,275East Korea.#3178507 · Immigration Office
48,508{EAST} Eastern People's Army.#12536609 · Corporal
41,830Military Productions.#13955368 · Member
32,496Blackhawk Rescue Mission Fan Club#754961 · Private
23,334US/EU | The Coalition#15639182 · Member
21,349something about zombies idk...#14386117 · Civilian
17,468SurfaceGlue#4690809 · Gluers
16,440Beagle Interactive#14477318 · Fans
14,860MEJ ARMY#4172591 · #MEJ ARMY
11,791Zombie RP Group(OFFICIAL)#14895876 · Member
7,997{EAST} Eastern People's Army Naval Force#9953350 · Seaman Recruit
6,324160th SOAR- MPS#15942255 · Recruit
5,921The Roaming Dead Roleplay Community#5337292 · Survivor
2,079Blackwater PMC,#17041710 · Recruits
1,561VDV | Allegiance Airborne Forces | MPS#32463342 · awaiting recruitment
1,41375th | 75th Ranger Regiment | MPS#15414152 · Recruit
1,184Venom PMC Private Military Corporation.#9719490 · Mercenary Inspector
1,035Beagle Archived#32588900 · Member
753[MPS] Forward Observations Group#32447419 · Awaiting Tryouts
186Aculon Technology Exclusionary Department#33240843 · Contestant
163PMC WG | MPS#32025250 · Recruit
114Crumb's Palace#32740864 · Member
39Try.Asplead's Clothing Group#32694661 · Admin
37Icelyn’s Little Server :)#8410460 · My wonderful fans :)
36Light's Hotel#5399221 · Hotel Guest
12Mop Rice Army#7102449 · RICE MOP SOLDIER
11George Washington's Great Revolutionary Army#16835931 · Major General
9US States of America group#16042271 · Governor
9Licking lemons#16497519 · Member
4State of Sevierre#36096618 · SDF
3Membership and rank as measured from this user’s public group list.