From there onwards, players just need to enter their Display Name in whatever letter case or number they choose. That's how one can get their display name on Roblox.

To get or change a Roblox Display Name, you should first log in to your Account Info page under Settings, then select the edit button next to the Display Name entry above your Username.

If you are tired of your old username in Roblox, here is how to get a shiny new Roblox display name for free.