Changing your username on Battlefy is easy as pie. All you need to do is head on over to your settings page.
You can do this one of two ways..
Head to battlefy.com/settings
Tap the giant blue area on the bottom left of your screen, and from there click the 'settings' option.
Once in the settings menu, the username is the first field you'll see. Tap in your new digits and voila. You'll be rocking your shiny new tag in all future tournaments.
Note: Usernames are unique so if someone else is using the name you entered then you will not be able to save your settings!
You may also notice that your username is part of your profile link (http://battlefy.com/users/username). We call this the user slug and defaults to the beginning part of your email. If that includes your real life name and you don't want that visible then please change your username once in order to change the slug to the new username.