Twitter doesn’t allow it if you try to clear your name and save it as a blank name. Then how does one keep a blank name on Twitter? For that, you will need to copy-paste a special character in the name box.
First, go to the name-changing screen as shown above. Then copy the symbol present within the apostrophes “ ً” and paste it into the Twitter name field. Make sure to remove the apostrophes before clicking the Save button. Refresh the profile and you will have a blank Twitter name.