Karr @MonstahMash #1084638163
19 May 2019
account created (per Roblox API)
16 Sept 2026, 19:50
last measured (UTC)
Username record
@MonstahMash — observed 16 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)
Open data
Download this user’s observed record: username history (CSV) · record (JSON)
Also a member of
Sonar Studios#2919215 · 🕹️Sonarian
18,806,384Bee Swarm Simulator Club#3982592 · Member
18,238,465The Flamingo Fan Club#3336691 · December 5th we will all do something
9,877,543Powerful Studio#5522949 · 💙┃Fan
8,063,036(学乱) Gakuran#416091513 · Students
7,513,946Roblox High School: Fan Club#1127093 · New Fan (Unranked)
7,012,294Easy.gg#5774246 · Member
4,749,719ROLVe#2613928 · Members
4,296,246Shyfoox Studios#2969540 · Foox
3,673,267best tycoons studio#33447943 · Owner
2,468,163Biodegradable Inc.#15941331 · Sprout Agent
1,682,603Lyte Interactive#5449496 · Member
1,229,400WarriorCatsRP#2650756 · 🐾Member
1,218,079DoubleAce Games#12743170 · 🏅Member
1,178,264Blox Studiо#4843020 · Member
973,471GET ON THE BUS GAMES#16208015 · wheels that go round and round
945,902Top of The Barrel#946378404 · friend
501,024Round 2 NYC#7498332 · [☆] Kommunity | 10+ Purchases
438,177Simple Bricks Races#34481178 · Member
433,095Creative Storms#7105773 · Member
358,421RobeatsDev#3155023 · Fan
354,393Codrop Studio#15553867 · 🎮・Player
318,604Temple of Brickbattle#3397136 · [0] Follower
310,863Idle Studios#13038221 · Fan
217,611Splashing Studioz#33986149 · Member
190,1512000Dolls#14948237 · Dolls ☆
186,512KonekoKitten's Official Fan Club#4332797 · Kitten
183,921The BreadFam#3372104 · Breadfam 🍞
131,572Tycoon RNG 99#12115267 · Passenger
90,030With Tag#750838132 · thrifter
41,930Hot Topic#15966394 · Member
41,239archiest#12996757 · ark
38,907godsfavorite#17144178 · afterlife
23,867ANGELPHILIA ピンクのつぼみたち#35992277 · かわいい
17,193Synos#15640615 · Member
12,336OFFICE SIMULATOR INC#10562923 · huge loser
7,841Bloxburg News#3151856 · Supporter
6,163Cradle's Outlet#33541696 · 💎 #ICE PACKERS !
1,538Aqua Wolves#3366845 · Scientists
15fflxrii#11116950 · Member
3Membership and rank as measured from this user’s public group list.