ROBLOX allows you to change this username, as well as your Display Name. It’s important to note that there are different rules and applications of both Usernames and Display Names.

How to buy 1,000 Robux to change your username on Roblox Robux are the in-game currency of Roblox, and they may be used to buy in-game improvements and avatar accessories.

To change your Roblox username login to your account and go to the settings section. In a browser this is represented by the gear icon in the upper-right corner.