There are a couple ways that you can add a blank name to Among Us. The first way is to use the spacebar when you are prompted to enter your name. This will create a blank space which you can then fill in with whatever character you want.
The second way is to type in any random string of characters and then press the backspace key until your name is completely blank. This method might take a few tries but it will eventually work.
Once you have a blank name, you can start playing the game as usual. You will be able to see other players’ names but they won’t be able to see yours. This can be useful if you want to remain anonymous or if you just want to mess with other players by giving them false information.