You could cheat.Is there any way to rename the MC? I downloaded a save & the person's name is fucking stupid
Check the original post and you'll see a link to the cheats.
Go to your room. Click on the computer. Then, click on the notepad on the left of your computer screen. Enter the code.changename = Changes your name
And remember, the search button is your friend (along with taking a look at the original post in the thread).