How to Change Your Display Name in ‘Fall Guys’

Once you’ve signed into Epic Games account, click your account name in the upper-right corner of the screen and then select “Account” from the drop-down menu.

Make sure you’re under the “General” tab and you should be able to edit your display name as one of the first options on the page. Once you edit your display name, you’ll have to confirm it. Once you’ve done that, your display name in Fall Guys should be updated.

Source: https://www.distractify.com/p/how-to-change-your-name-in-fall-guys