As of now, players get to choose a username while creating their Roblox account. If players intend to change this username afterwards, they have to pay 1,000 Robux.

In Roblox, a display name becomes the player's identity in the game. Usually, players tend to get a display name that is catchy and builds up their reputation in a certain community for that game.

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.