How to rename your user account on RPCS3.

By default, RPCS3’s default username is “User” when you’re playing offline.
Rock Band 3's menu, showing the username set to the default "User."

Changing it is very easy!

In RPCS3, go to Manage > User Accounts RPCS3 showing "User Accounts" option under the "Manage" menu.

Once you’re there, click on the default username (00000001 - User) and then click “Rename User”.

RPCS3's "User Manager", showing the default username.

Now change it to whatever you want, then close it out.

RPCS3's "Rename User", showing the user changing the name.