Roblox's stance on impersonation
Impersonation is when someone assumes the identity of another person to harass or defraud them. It can also include behaviours such as creating fake accounts or hijacking accounts, usually with the intent of targeting an individual.
Roblox does not allow users to impersonate other people’s real- or virtual-world identity or affiliations. This includes any attempts to impersonate in the following areas, name or username, position in a company, digital representation, a post or comment or falsely applying a Roblox Verified Badge to any account.