Ruben Sim

Benjamin Robert Simon (born May 12, 1997), known online as Ruben Sim, is an American YouTuber known for his commentary and criticism of the online game platform Roblox. Simon began producing content about Roblox throughout the 2010s, building a large audience through satirical videos and investigative commentary.

In November 2021, Roblox Corporation filed a $1.65 million federal lawsuit against Simon, alleging he had harassed other users and developers and posted tweets containing false terrorist threats that prompted the temporary lockdown of a Roblox developer conference. The litigation was settled out of court in January 2022, with Simon agreeing to a $150,000 monetary judgment without admitting wrongdoing, alongside accepting a legal permanent injunction banning him from the platform. Simon later publicly accused the corporation of using the lawsuit to silence his ongoing criticisms of their alleged child safety and moderation failures.

Following the settlement, Simon shifted the focus of his channel to exposing online predators within the Roblox community. His investigations contributed to the FBI arrest of a prominent Roblox game developer and the creation of "Moderation for Dummies", an initiative to document explicit content on the Roblox platform. In 2025, Simon became a central figure in a broader community controversy after publicly defending and collaborating with YouTuber Schlep, a fellow creator banned by the corporation for conducting unauthorized sting operations against alleged predators on the platform.

YouTube career Early career Simon joined the online gaming platform Roblox in 2008, later building a large audience on YouTube under the pseudonym Ruben Sim. Among Simon's earliest content is a satirical news web series titled Roblox Watch, which critiqued the executive decisions of Roblox Corporation. Simon claimed that conflicts with the game's moderation team over the content led to the platform issuing IP bans against him. Simon continued to bypass these restrictions by creating alternative accounts. By November 2021, Simon's YouTube channel had amassed over 763,000 subscribers.

On November 23, 2021, Roblox Corporation filed a lawsuit against Simon in the United States District Court for the Northern District of California. The complaint, which invoked the Computer Fraud and Abuse Act, sought $1.65 million in damages for alleged fraud and breach of contract. The lawsuit alleged Simon had led a "cybermob" to harass users, repeatedly circumvented a permanent platform-wide ban and posted false and misleading terrorist threats on social media,

Simon initially declined to comment on the lawsuit, stating on Twitter that he wanted to simplify the legal proceedings. Under the terms of the settlement, Simon agreed to a $150,000 monetary judgment without admitting wrongdoing. He also accepted a permanent injunction banning him from the platform, as well as barring him from coming within 100 feet of any Roblox corporate office.

Following the settlement, Simon publicly addressed several of the lawsuit's allegations, broadly denying the corporation's most severe claims. Simon maintained that the corporation weaponized his past terms of service violations to aggressively police his off-platform conduct and silence his ongoing criticisms of their alleged child safety and moderation failures.

Arrest of Arnold Castillo During September 2020, Simon began investigating a prominent Roblox game developer known by the alias DoctorRofatnik, later identified as Arnold Castillo. Following a video published by Simon that compiled evidence of Castillo's predatory behavior, Roblox Corporation banned the DoctorRofatnik account and reported it to the National Center for Missing & Exploited Children.

Moderation for Dummies

To document alleged systemic failures in Roblox Corporation's safety infrastructure, Simon established "Moderation for Dummies", an initiative to monitor explicit behavior on the Roblox platform.

In October 2024, the investment research firm Hindenburg Research utilized Simon's data in a short-seller report that accused the corporation of inflating user metrics and ignoring child safety. Later, Australian advocacy group Collective Shout cited these documents in formal government submissions regarding internet search engine safety codes, additionally noting the number of identified accounts as "over 80,000" by October 2025.

Collaboration with Schlep

Following similar videos published by YouTuber Schlep, who conducted independent sting operations against alleged child predators on the platform and investigated Roblox's platform moderation, Simon entered into a public partnership with him and began appearing in his videos. Schlep's content involved creating decoy accounts in order to lure individuals seeking to exploit minors. According to his legal representation, six arrests have been made in connection with evidence forwarded by him to local law enforcement.

In August 2025, Roblox Corporation permanently banned Schlep and issued a cease and desist order against him, updating its terms of service to prohibit unauthorized "vigilante groups", which the corporation argued "[bypassed] Robloxs own safety systems". alleging Bloomberg's article "contained glaring mischaracterisations about how [Roblox] protect users of all ages" and "failed to reflect ... the complexities of online child safety."

In August 2025, Roblox Corporation's legal stance towards critics of the platform's safety record drew renewed scrutiny from journalists and commentators after the company released a cease-and-desist letter to the YouTuber Schlep, along with terminating his accounts on the platform. The attorneys representing Schlep noted Roblox Corporation invoked the Computer Fraud and Abuse Act on the same basis as it had against Simon during Roblox Corporation v. Simon. Simon retained the same law firms as Schlep in connection with these events.