Roblox RegisterIndependent record of Roblox groups · not affiliated with Roblox Corporation
@William_99cool

KayoFlex @William_99cool #2791520162

8 August 2021
account created (per Roblox API)
31 Oct 2026, 18:06
last measured (UTC)

Username record

@William_99cool — observed 31 October 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

Catalog Avatar Creator#15102943 · ✨ Member
45,915,772
Scriptbloxian Studios#4705120 · Legend
30,021,366
BIG Games Pets#3959677 · Fan
29,162,710
Quataun#12121240 · Member
18,397,015
Grandma's Favourite Games#6042520 · Members
12,696,693
BIG Games™#2703304 · Fan
11,256,330
Rumble Studios#3333298 · Fan
11,226,027
Muffin Interactive#459291258 · Member
10,898,987
Simple Bricks Trees#690489827 · Member
10,345,133
Shiny Pixels#9152522 · Pixel
9,645,192
Wild Atelier#7947655 · Member
8,872,702
club XOX#8327387 · Member
8,417,751
Powerful Studio#5522949 · 💙┃Fan
8,062,498
48h Games#14461694 · Member
7,660,199
Foxzie#3955051 · 👤 Member
7,033,192
Double Bandit Studios#13751258 · Bandits
6,257,690
Tycoon Playground#10446127 · Member
5,469,895
Wild Roleplay#4488708 · Fan
4,204,179
Tetra Games#4843918 · Fan
4,196,127
Rho Games#12641764 · 🌟 | Supporter
3,977,279
Mega Obby Games!#16134074 · Member
3,662,600
Gamefam x Sonic#13632331 · Member
3,566,607
NoDrivingLicense#271600977 · Member
3,515,782
IROC Studios Building Roleplaying Community#7064117 · Verified Gamer 🕹
3,496,981
Ready, set, more!#7371243 · Fan
3,458,703
Ksieny#6712002 · Member
2,810,423
Over the Moon!#5866831 · Member
2,772,114
EQ Game Studios#15084558 · Awesome Players!
2,193,816
Do Big's Clicker Sim#4546767 · Member
1,922,583
Names Are Not Important#8731481 · Member
1,920,573
Super Magnet Studios#5054561 · Supporter
1,794,595
Smart's Studio#6504408 · Fans [🥰]
1,568,234
Super Heroes™#3020631 · Member
1,539,332
Virtual Block Studio#2856593 · Member
1,488,721
Digging Games#9050583 · Member
1,396,617
TOXYN#7603235 · ⭐Fan
1,364,570
Your Gym Game#874474070 · Member
1,068,147
Latino UGC#15934353 · 🛍️
1,036,352
OOFer Squad#3718364 · Member
838,192
Hero_Studios#11646530 · ⚡Heroes⚡
837,082
Games But Blue#13994786 · Members
621,949
EpicZ Studioz#5129120 · Members
562,039
Roleplaying Clothing by Tiger#7230215 · Premium Customer
453,936
CYARQS Tycoons#8391334 · Member
428,313
ZAP Interactives#86236032 · Member
376,136
LcLc OFFICIAL#5368483 · Member
350,474
Blu Crew#3450277 · Member
303,270
Content Deleted - 5450212#5450212 · Customer
4,473
Group Funds#769947 · Member
4,403
Mimara's Studio#997339135 · Member
2,116
Venturé#11328819 · [0] Premium Guest
444
The bacon hair society group#10751937 · Bacon Military Members
197

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