Sheldon_Cooper @Mr_killaJr2nd #5337688979

16 December 2023

account created (per Roblox API)

19 Aug 2026, 01:16

last measured (UTC)

Username record

@Mr_killaJr2nd — observed 19 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

HD Admin#4676369 · Epic User

SCP | Roleplay Community#5479038 · Roleplayer

XAF Games#878417107 · Member

Hapless Studios#5502618 · Supporter

Special Containment Procedures Foundation [SCPF]#2760782 · Class - D

Quantum Science Inc.#2847031 · Employee

Jurassic Blocky#8727738 · Member

Jacys Studios ROBLOX#5288558 · Member

SCP: Site Roleplay Community#2935212 · Group Member

Nuget.Studios#33384824 · 😎Member

Roblox Developer Community#10720185 · Developer

Foundation Roleplay#4711525 · Supporters

[SCPF - Special Containment Procedures Foundation]#4606577 · Class D

[-] Royal Guards#32411430 · Lance Corporal

Fallen Ashes Group#13789958 · Member

RBWR Simulation Community#16332057 · Community Member

SCP-F ︱Special Containment Procedures Foundation#6650179 · Security Class 0

Koyot Digital#33528008 · Member

[ ASYNC Research Institute ]#14615870 · Intern

- Ministry of Death Eaters -#14675994 · Recruit

Callisto Innovationsᅠ#33161058 · Intern

Bio Genetics#7844157 · Department Staff

The Major Explorer Group [M.E.G]#32668420 · Wanderer

Athena Computer, Inc.#6721530 · Associate

SCPF ‐ Special Containment Procedures Foundation#5102424 · Level 2

Jurassic Remnants#16284242 · Member

InGen Dinosaur Actors#13713011 · DA-IV

Operation - Nublar#35438789 · Dino Member

Chuds make dino games#123437394 · Member

Project: Nublar#11453360 · Tourist

United states Of America Military roleplay.#33920621 · [🌟] Celebrity

[SCP-F: Special Containment Procedures Foundation]#10693806 · Class Disposable

【 ACR 】|| Anomaly Containment and Research#7247784 · Level-2

[USAC] | United States Army Command#35067802 · [E1-E2] Private

[SCP<>F] Special Containment Procedures Foundation#16446900 · Security Class 2

Quantum Department of Group Efficiency#35814178 · Member

Four-C Club#16356129 · Customer Assistant

[DA]Dinosaur Actors#14818642 · DA-5

SCPF ‐ Scientific Department#5157831 · Research Associate

SCPF [•] Special Containment Procedures Foundation#13515474 · Level-3

[SCPF] ṦCP FOUNDATION#12442578 · [ Clearance - I ]

[DA] Dinosaur Actors#12954448 · DA-1

Jurrasic Crimson#35613156 · Killa | Founder

Project Nublar#12863435 · QA Team

[/]Secure Contain Protect Foundation[\]#11969944 · Class-D

Async I The backrooms#34901977 · Intern

Operation: Emperor#166328807 · Co Owner

[SCP<>F] Manufacturing Department#34654216 · Senior Developer

DEV Team [FW]#35869848 · [🏗] Official Developer

[ṦCPF] Security Department#12443183 · Trainee

7

[SCP<>F] Acting Department#16448957 · Intern Actor

6

Area-42 | Group Allies#34189705 · Allies

6

[SCPF] !Ethics Committee.#7248053 · Junior Committee Member

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